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GEO D Series - Alive Technology

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1. eHoiva e savna IV aset di Je M Rot 1 Sea Li weem We 1 1 1 ZNOUWINNIS waa E une le 1 1 i DESEN 1 1 nues e TANNVHO VE ru 1 1ndino 1 znova lu 1 ia dent 199 spa 1 G 5 uewuog ina ZAIO SE LSN L A Rah E AM Es 1 le u 1 e 1 TEST 1 1 1 i OUNEN 1 1E 13 19 18 o EE SEE SE E 1 TANNVHO i CH 1ndlno 1 HoLva 1 Te ale Klee kl al ET F Roh s NJ vronn Jk pe zereck FR THOSE suoljoa oid 8 ones eia oipny eya uyed enBoreuy INVHOVIG 9018 Jejoauooq L EIDO ZYZXN waLaW NA nan 1 BEIENEE WoowdvaH i ran 1 dl e NM av LH vasnas If easnas wen A zasnas o tasas It 71 LAdNI rats HO i CONNECTION DIAGRAMS Page 87 97 10 CONNECTION DIAGRAMS 10 1 GEO D cluster to amplifiers and NX242 Stereo passive mode FROM AMPLIFIERS OV 0000 TO AMPLIFIERS
2. 1 2 REAR LF 3 4 FRONT LF MF 5 6 Not Connected LF MF REAR LF MF REAR FRONT FRONT EP6 F IN IN RIGHT LEFT gt e STEREO AMPLIFIER 2 STEREO PASSIVE MODE Page 88 97 CONNECTION DIAGRAMS 10 2 GEO D cluster to amplifiers and NX242 Mono active mode FROM AMPLIFIERS OV JO TO AMPLIFIERS a a N C HF LF MF LF 3 2 1 FRONT REAR LL E I z o jam D 1 2 REAR LF 3 4 FRONT LF MF 5 6 HF FRONT HF LF MF MONO ACTIVE MODE CONNECTION DIAGRAMS Page 89 97 10 3 GEO SUB GEO D cluster to amplifiers and NX242 GeoD in Passive Mode FROM AMPLIFIERS TO AMPLIFIERS HF LF SUB SUB AUX GEOD LF MF REAR FRONT REAR SUB IN FRONT IN ere AMPLIFIER 3 1 2 REAR LF 3 4
3. LEFT CONFIGURATION RIGHT CONFIGURATION 5 6 3 First to second GEO SUB 4 push pins BLGEOD 10mm diameter x 20 mm length connect first to second GEO SUB 2 additional push pins are required for angle adjustment FIRST TO SECOND GEO SUB Page 52 97 GEO D RIGGING PROCEDURE e Lift bumper and top GEO SUB assembly and position the next GEO SUB below the assembly with NEXO logo on the same side than the upper cabinet e Lower bumper and top GEO SUB assembly carefully until the first and second GEO SUB side rigging plates locate Use front grid rear vent ports or handle to guide the assembly The rigging plates have been designed to locate against each other and so align the holes correctly e Connect the upper GEO SUB link bar to the lower GEO SUB rigging plate or lower link bar to upper rigging plate for Right configuration by inserting one 10mm x 20 mm push pin in the SAFETY PIN MUST BE FITTED hole on each side see figure below IMPORTANT The push pins for SAFETY PIN MUST BE FITTED holes must always be inserted first and stay in position permanently NEVER REMOVE THEM ONCE CABINETS ARE SUSPENDED SAFETY PIN MUST BE FITTED HOLE GEO D RIGGING PROCEDURE Page 53 97 e Insert two additional 10mm x 20mm push pins in the front holes see figure above e Lift the bumper and two first GEO SUB s to a height that allows convenient access to the linking bars and the angle setting hol
4. FRONT LF MF 5 6 Not Connected MONO PASSIVE MODE WITH GEO SUB Page 90 97 GEO D SERIES PARTS amp ACCESSORIES LIST 11 GEO D SERIES PARTS amp ACCESSORIES LIST 11 1 Array Modules amp Control Electronics List MODEL DRAWING DESCRIPTION GEO D10 GEO D 10 Cardioid Main Module GEO SUB GEO SUB 10 Cardiod Sub Bass Module 11 2 Accessories List MODEL DESCRIPTION GEOD BUMPER Main Geo D Bumper GEOD BTBUMPER Geo D Bottom Bumper GEOD EXBAR 1 Geo D Extension Bar for GEO D10 Cluster GEOD ORP GEOD EX1 Wheel for One Rigging Point Mode Two Legs Bridle for One Rigging Point Mode One Adjustable Leg GEO BRIDLE GEO D SERIES PARTS amp ACCESSORIES LIST Page 91 97 GEOD EXBAR 2 GEOD EXBAR 3 GEOD EXBAR4 LEVA1500 DRAWING DESCRIPTION Geo D Extension Bar for GEO D10 GEOSUB Cluster Geo D Bottom Extension Bar for GEOSUB Cluster Geo D Front Extension Bar for GEO D10 GEO SUB Clusters Chain Lever Hoist 1 5 tonne 9 meters chain length GEOD BNFIX GEOD BUDP GEOD DOLLY GEOSUB DOLLY Chain Lever Hoist 0 750 tonne 6 meters chain length Chain Bag GEO D10 Dolly Storage Tray GEO D 10mm x 20mm Quick Release Pin Kit for fixed installations per flown GEO D GEO D Stands for Stacked GEO D Bumper 3 x GEO D10 1 x GEOD BUMPER Dolly 2 x GEOSUB 1 x GEOD BUMPER Dolly Page 92 97 GEO D SERIES PART
5. GEO D10 can be stacked Left or Right Left means Nexo logo on front grid is left as seen from front Right means Nexo logo on front grid is right as seen from front GEO D10 can be connected to bumper Left or Right by simply flipping the cabinets upside down do not reverse rigging plates Whenever possible NEXO recommends symmetrical designs preferably NEXO logo inwards in stereo configurations LEFT CONFIGURATION RIGHT CONFIGURATION 4 push pins BLGEOD 10mm diameter x 20 mm length connect the bottom GEO D10 to the bumper e Position the first GEO D10 on bumper e Link the GEO D10 to the bumper assembly using the four 10mm x 20mm push pins front bumper connects at GEO D10 front articulation point rear bumper connects at LIFT GEO D10 rigging plates holes e Check that all push pins are in their locked position GEO D RIGGING PROCEDURE Page 29 97 BUMPER TO FIRST GEOD ASSEMBLY Tn ET e SE al Nol o 0 LEFT CONFIGURATION 5 3 4 First to second GEO D 10 FIRST TO SECOND GEO D10 Page 30 97 GEO D RIGGING PROCEDURE 4 push pins BLGEOD 10mm diameter x 20 mm length connect first to second GEO D10 2 additional push pins are required for angle adjustment e Lift and position the next GEO D10 above the assembly with NEXO logo on the same side than the lower cabinet e Lower
6. however BNFIX nuts and bolts installation will be facilitated if front grid is removed remove the front grill drawings below REMOVING THE GRILL Page 66 97 GEO D RIGGING PROCEDURE e place bolts and nuts according to drawing below e re install the grid being carefull that the NEXO logo must be on the GEO Waveguide side 5 9 Testing and Maintenance of the system e General Geo is a precision piece of equipment and requires regular attention to maintenance in order to give long and reliable service NEXO recommends regular testing of loudspeaker rigging components preferably using a suitable test rig coupled with a visual inspection e Fasteners there are several critical points in the GEO D GEO SUB cabinets Of primary concern are a The grid screws attaching the grid to the cabinet b The machine screws attaching the rigging system to the cabinet c The screws attaching the directivity flanges to the front of the cabinet These fasteners should be regularly checked and tightened as necessary e Cleaning The exterior of the cabinet and the rigging system can be cleaned with a damp cloth soaked in mild soapy water On no account use solvent based cleaners which may damage the finish of the cabinet After cleaning the rigging system must be treated with a suitable lubricant to prevent rusting NEXO recommends the use of Scottoil FS365 which is a water based lubricant with a mixture of machine
7. 1 3 Contacts Correct training is fundamental to safe practise when working with loudspeakers flying systems NEXO recommend that users contact local industry associations for information on specialist course Information for International training agencies can be obtained by contacting either The Production Services Association Rigstar Training and Testing Center PSA 82 Industrial Dr Unit 4 School Passage Northampton Massachusetts 01060 U S A Kingston upon Thames Phone 413 585 9869 Fax 413 585 9872 KT1 SDU Surrey school rigstar com ENGLAND Telephone 44 0 181 392 0180 ESTA Entertainment Services amp Technology Association 875 Sixth Avenue Suite 1005 NEW YORK NY 10001 USA Phone 212 244 1505 Fax 212 244 1502 info esta org www esta org Page 22 97 GEO D RIGGING PROCEDURE 5 2 General Description 5 2 1 GEO D10 and GEO SUB Each GEO D and GEO SUB Array Module includes an individual rigging system which is mounted at the NEXO factory GEOD10 ARRAY MODULE GEOS SUB ARRAY MODULE GEO D10 and GEO SUB angle sequences are identical and follow logarithmic scales Angle setting values are e Bumper to first cabinet GEO D10 or GEO SUB 0 e Cabinet to cabinet GEOD10 or GEO SUB 0 20 0 315 0 50 0 80 1 25 2 0 3 15 5 0 6 3 8 0 10 M 35 SS amp mE y o REFERTO USER MANUAL SAFETY INSTRUCTIONS BEFORE SYSTEM RIGGING O Oo r7 GEO D10 RIGGING PLATE GE
8. NUMBERS PLEASE CONTACT NEXO OR YOUR LOCAL DISTRIBUTOR SO THAT INSTRUCTIONS AND COMPONENTS ARE SENT TO YOU FOR FILTER MODIFICATION GEO D GENERAL SET UP INSTRUCTIONS Page 11 97 GEO D SERIAL 0100 to 1610 Please contact NEXO or your local distributor so that instructions and components are sent to you for filter modification GEO D Serial 1611 to above Configuring for Passive Mode default configuration e Connector A amp B are link together e Speaker Connector is in the CN1 passive connector located on the PCB Connector B Speaker Connector nA wd Connector A Configuring for Active Mode e Speaker connector is directly plugged in connector B e Connector Ais not used PCB is bypassed Connector A unused Connector B Speaker Connector 2 1 3 GEO SUB connectors The GEO SUB s are connected to power amplifiers via NL4FC SPEAKON connectors not supplied A wiring diagram is printed on the connection panel located on the back of each cabinet The in out pins of the SPEAKON sockets are identified The sockets are connected in parallel within the enclosures see the Connections Diagrams section of this manual NL4FC 1 1 2 2 GEO SUB Rear 12 s VLF 80 Front 18 VLF LF 80 1 Negative 1 Positive 2 Negative 2 Positive Page 12 97 GEO D GENERAL SET UP INSTRUCTIONS 2 1 4 Cabling NEXO recommends the exclusive use of multi conductor cables to connect the system the
9. attach the next serie of modules and repeat the above checks Make sure that these serie of modules sum properly with the modules above them When all the modules are flown check that the aiming angles are the same left and right Make sure that multiple GEO D s and GEO SUB s are summing properly 6 dB gain per doubling of quantity 8 5 Final Pre Sound Check Check Play a CD track mono left and then right both sides must sound strictly identical When listening in the center between two GEOD GEO SUB s everything from LF to HF should be located to the phantom center position If not repeat the above check sequence to identify the source of the problem TECHNICAL SPECIFICATIONS Page 77 97 9 TECHNICAL SPECIFICATIONS 9 1 GEO D10 Vertical Tangent Array Module 9 1 1 System specifications PRODUCT FEATURES GEO D10 Components HF 1 x 3 voice coil 1 4 throat 16 Ohms driver on a 5 hyperboloid reflective wavesource MF LF front firing 1 x 12 30cm high excursion neodymium 16 Ohm driver LF side firing 2 x 8 20cm neodymium 8 Ohm drivers in series 380 x 744 x 750 mm 15 x 29 x 29 9 including array assembly system Rigging axis to axis height 344mm 13 10 Trapezoid Height x Width x Depth Shape Weight net 57 kg 125 7 lbs including array assembly system Connectors 1 x AMPHENOL EP6 6 pole socket In 1 x AMPHENOL AP6 6 pole connector Through Construction Baltic birch ply with
10. cable kit is compatible with all the cabinets and there is no possible confusion between LF MF and HF sections Cable choice consists mainly of selecting cables of the correct sectional dimension size in relation to the load resistance and the cable length Too small a cable section will increase both its serial resistance and its capacitance this reduces the electrical power delivered to the loudspeaker and can also induce response damping factor variations For a serial resistance less or equal to 4 of the load impedance damping factor 25 the maximum cable length is given by Lmax ZXS Sin mm Zin Ohm Lmax in meters The table below indicates these values for 3 common sizes Load Impedance Q Cable section 1 5 mm AWG 14 2 5 mm AWG 12 4 mm AWG 10 2 1 5 Examples e The GEO D10LF section has a 16 Ohms nominal impedance so 4x GEO D10 LF section wired in parallel will present a 16 4 4 Ohm load impedance The maximum acceptable 2x2 5 mm AWG 12 cable length Lmax for such a cluster is 10 meters e The GEO SUB subwoofer has a 2 x 8 Ohms nominal impedance therefore 2 GEO SUB s wired in parallel will present a 2 x 4 Ohm load impedance The maximum acceptable 2x4 mm AWG 10 cable length Lmax is then 16 meters IMPORTANT Long speaker cables induce capacitive effects up to hundreds of pF depending on the quality of the cable with a low pass effect on high frequencies If long spe
11. drawing below FRONT RIGGING REAR RIGGING POINT POINT COMPRESSION POINT CONNECTING FRONT REAR MOTORS AND CHAIN LEVEL HOIST 5 6 2 Bumper to first GEO SUB assembly IMPORTANT GEO D10 and GEO SUB can be flown Left or Right Left means Nexo logo on front grid is left as seen from front Right means Nexo logo on front grid is right as seen from front GEO D10 and GEO SUB can be connected to bumper Left or Right by simply flipping the cabinets upside down do not reverse rigging plates Whenever possible NEXO recommends symmetrical designs preferably NEXO logo inwards in stereo configurations A A LEFT CONFIGURATION RIGHT CONFIGURATION GEO D RIGGING PROCEDURE Page 51 97 4 push pins BLGEOD 10mm diameter x 20 mm length connect the top GEO SUB to the bumper e Position the bumper on the first GEO SUB by lifting or lowering bumper assembly with motor hoists e Link the GEO SUB to the bumper assembly using the four 10mm x 20mm push pins front bumper connects at GEO SUB front articulation point rear bumper connects at LIFT GEO SUB rigging plates holes e Check that all push pins are in their locked position e Ensure that no objects have been placed accidentally on the top of the bumper as they may fall when the system is lifted P 0 LIFT POINT LIFT POINT FIRST GEO SUB TO BUMPER ASSEMBLY
12. off e GEO SUB 1 amplifier 2 x GEO SUB per amplifier 1 channel VLF rear 1 channel VLF LF Front mode switch in Stereo position Gain switch in 26 dB gain position all dynamic or filter processing switches off Which gives a total of 3 identical amplifiers for such a cluster Page 16 97 NS 1 SIMULATION SOFTWARE 3 NS 1 SIMULATION SOFTWARE NS 1 software is a R amp D simulation tool derived application It processes measured speaker data with complex mathematical algorithms to assist the user in optimizing system design Due to the complexity of the interaction of multiple cabinets it is simply not possible to reliably design curved vertical arrays without using the processing power of a computer to predict the optimum array structure for a given audience geometry The design logic is far more complex than looking at a section drawing of the venue measuring the overall angle needed to cover the audience from the cluster location and dividing by 10 degrees to determine the required amount number of GEO D10 amp GEO SUB cabinets NS 1 is an easy to use tool that allows to shape the energy leaving the cluster to fit the audience It predicts pressure levels radiated from the system to ensure enough cabinets are provided for the application as well as mechanical constraints for safe flown systems In addition it provides mechanical information for all clusters in agreement with Structural Analysis Reports available in the Help secti
13. oil surfactant and anti rust treatment NEXO NX242 DIGITAL CONTROLLER FOR GEO D AND GEO SUB Page 67 97 6 NEXO NX242 DIGITAL CONTROLLER FOR GEO D AND GEO SUB IMPORTANT GEO SUB and GEOD10 use latest NEXO proprietary sophisticated DSP algorithm which require additional resources from the NX Tension ES4 Card All available GEO SUB and GEO D10 setups require that NX ES4 card is installed in NX242 TD Controller 6 1 NX242 Proprietary Functions The NX242 is much more than a generic Digital Signal Processor It provides all the standard functions that you expect from this type of unit but its real value is the interface between you and your speaker system The NX242 includes a number of proprietary functions developed and refined during NEXO s 20 years of loudspeaker development experience to ensure that your PA delivers maximum performance and reliability 6 1 1 Upgradable Firmware NEXO releases regular firmware updates Each new release is the result of our ongoing R amp D program combined with user feedback from the field New firmware releases can include new setups for different combinations of NEXO full range loudspeakers and subwoofers improvements to existing setups and new software functions The NX242 is thus evolving with each of those releases profiting from the latest discoveries of NEXO s R amp D department as well as the experience of NEXO users 6 1 2 EQ 8 Filtering Subsonic and VHF filtering Low and high p
14. on the pro audio market have the following operating modes e Stereo two fully independent channels deliver identical power into identical loads NEXO recommends Stereo Mode for all amplifier channels feeding GEO D10 s and GEO SUB s GEO D GENERAL SET UP INSTRUCTIONS Page 15 97 e Bridge Mono the second signal channel processes the same input as the first channel but with reversed phase The single load is connected between the two positive channel outputs using a suitable connection While the total output of the amplifier remains the same the available output voltage the minimum impedance that can be connected and the voltage gain are doubled as compared with stereo operation Typically only channel 1 input is active Positive and negative output connections vary depending on amplifier manufacturers NEXO does not recommend Bridge Mono Mode unless amplifier power is clearly not sufficient IMPORTANT When in Bridge Mono mode check your amplifier user manual for proper connection of outputs 1 and 2 in relation to input phase e Parallel mono the output terminals of the two channels are configured in parallel using an internal relay The single load is connected either to the output of channel 1 or to that of channel 2 as if in stereo While the total output of the amplifier remains the same the output voltage level is also the same as in stereo mode The minimum impedance that can be connected is reduced by half due to the fac
15. rigging plate or lower link bar to upper rigging plate for Right configuration by inserting one 10mm x 20 mm push pin in the SAFETY PIN MUST BE FITTED hole on each side see figure below IMPORTANT The push pins for SAFETY PIN MUST BE FITTED holes must always be inserted first and stay in position permanently NEVER REMOVE THEM ONCE CABINETS ARE SUSPENDED EI q q ER q E 5 kd MI SAFETY PIN MUST BE FITTED HOLE e Insert two additional 10mm x 20mm push pins in the front holes see figure above e Lift the bumper and two first GEO D10 s to a height that allows convenient access to the linking bars and the angle setting holes e Insert 1 additonal push pin to the required angle value hole on each side e Check that all 6 push pins are locked IMPORTANT Ensure angle settings are identical on both sides of the cabinet GEO D RIGGING PROCEDURE Page 45 97 5 5 4 Subsequent GEO D10 s Repeat the above section steps until all GEO D10 s are in place As the assembly is lifted angles between GEO D10 s cabinets will remain at 0 whatever the linking bar positions NB angle settings are free to be adjusted while the system is clear of the ground provided that rear pull up force is not applied 5 5 5 Applying compression with the Chain Lever Hoist Once the GEO D10 assembly is completed connect the bottom bumper to the last GEO D10 with the 10m
16. to measure in order that each transducer can fit with its neighbour by achieving a perfect phase alignment Unconventional filters are used ranging from 6dB octave to near infinite slopes depending of the type of crossover wanted Time alignment is also performed in an unconventional way by using the crossover filter group delays in combination with allpass and or frequency dependent delays Page 68 97 NEXO NX242 DIGITAL CONTROLLER FOR GEO D AND GEO SUB 6 1 3 Protection VCAs and VCEQs Each channel has its own simulation and protection process OUTPUT CHANNEL 4 Each audio channel contains a combination of controlled gain stages let s call them VCAs as in analogue circuitry These VCAs are embedded into complex composite signal chains that adapt change their basic operation into frequency selective attenuation similar to an analog voltage controlled dynamic equaliser VCEQ imo Ea WHY MUTE gt DAC Each VCEQ and VCA is controlled via synthesis of several signals from the various detection sections That synthesis is in fact the envelope of those signals with an optimised release and attack time for each VCEQ and VCA depending on its frequency range and the cabinet selected Displacement Control The Sense input signal is sent to a shaping filter producing a signal whose instantaneous amplitude is proportional to the voice coil excursion This signal after rectification is compared to
17. top GEO D10 carefully until the first and second GEO D10 side rigging plates locate Use front grid rear vent ports or handle to guide the assembly The rigging plates have been designed to locate against each other and so align the holes correctly e Connect the upper GEO D link bar to the lower GEO D rigging plate or lower link bar to upper rigging plate for Right configuration by inserting one 10mm x 20 mm push pin in the SAFETY PIN MUST BE FITTED hole on each side see figure below IMPORTANT The push pins for SAFETY PIN MUST BE FITTED holes must always be inserted first and stay in position permanently NEVER REMOVE THEM ONCE CABINETS ARE STACKED EI TA 1 C Le g A C o d O 4 E q e SAFETY PIN MUST BE FITTED HOLE e Insert two additional 10mm x 20mm push pins in the front holes see figure above e Lift Cabinet to release weight from linking bars and insert 1 additional push pin per side to the required angle e Check that all 6 push pins are locked IMPORTANT Ensure angle settings are identical on both sides of the cabinet GEO D RIGGING PROCEDURE Page 31 97 5 3 5 Subsequent GEO D10 s e Repeat the above section steps until all GEO D10 s are in place IMPORTANT DO NOT attempt to make any changes to the angle adjustments without releasing weight on the linking bars 5 3 6 Ground Stacking GEO SUB with Geo D10 s Proc
18. 100 W 4 Ohms p 875to 1550 W 4 Ohms GEO D10 Passive Mode 2000 to 3600 W 4 Ohms 2000 W to 3600 W 4 Ohms 4in arallel 4 Ohms load GEI GEO D10 Active Mode 4inpa GEO D10 Passive Mode 6 in parallel 2 7 Ohms load GEO D10 Active Mode 6 in parallel 2 7 Ohms load 2000 to 3600 W 4 Ohms 2000 to 3600 W 4 Ohms 1000 to 1800 W 4 Ohms 3300 to 6000 W 2 Ohms 3300 to 6000 W 2 Ohms Remo 3300 to 6000 W 2 Ohms 3300 to 6000 W 2 Ohms 1650 to 3000 W 2 Ohms rallel 4 Ohms load 2 2 2 2 2 3 GEO SUB recommended amplification The GEO SUB requires two amplifier channels delivering separately processed signals to produce its directional pattern Recommended Amplifier GEO SUB Channel 1 Channel 2 VLF Rear VLF LF Front 1000 to 2000 W 8 Ohms 1000 to 2000 W 8 Ohms 2000 to 4000 W 4 Ohms 2000 to 4000 W 4 Ohms Single 8 Ohms load GEO SUB 2 in parallel 4 Ohms load Current rating It is very important that the amplifier behaves correctly under low load conditions A speaker system is reactive by nature on transient signals like music it will require four to ten times more instantaneous current than its nominal impedance would indicate Amplifiers are generally specified by continuous RMS power into resistive loads however the only useful information about current capacity is the specification into a 2 Ohm load It is possible to perform an a
19. 5 5 6 3 8 0 10 0 logarithmic steps SYSTEM SPECIFICATIONS GEO SUB with NX242 TDcontroller Frequency Response 3dB a 38 Hz 300 Hz Usable Range 6dB a Sensitivity 1W O 1m b Peak SPL 1m b 35 Hz 500 Hz 103 dB SPL Nominal 140 143 dB Peak Dispersion c Cardioid pattern over the entire useable bandwidth two channels of the NX242 are used for the process Q 3 4 amp DI 5 3 dB over the entire useable bandwidth X Over Mode 75 Hz active Overlap Mode 300 Hz through NX242 Digital TDcontroller 2x8 Ohms Directivity Index c Crossover Frequency Nominal Impedance Recommended Amplifiers 2 amplifier channels are required for directional operation each rated at 1000 to 2000 Watts into 8 Ohm per channel SYSTEM OPERATION Electronic Controller The NX242 Digital TDcontroller presets are precisely matched to the GEO SUB and include sophisticated protection systems Using the CD18 subbass without a properly connected NX242 Digital TDcontroller will result in poor sound quality and can damage components Speaker Cables The front loudspeaker of the GEO SUB is wired 2 amp 2 while the rear loudspeaker is wired 1 amp 1 The GEO SUB must use separate cables from the main system Rigging System d Please refer to the user manual before any operation As part of a policy of continual improvement NEXO reserves the right to change specifications without notice a Response
20. A comprehensive understanding of GEO theory tangent arrays and specific features of GEO D10 and GEO SUB and will help you to operate your system at its full potential Page 10 97 GEO D GENERAL SET UP INSTRUCTIONS 2 GEO D GENERAL SET UP INSTRUCTIONS 2 1 Speaker Wiring 2 1 1 GEO D10 connectors GEO D s are connected to power amplifiers via one AP6 Male Connector GEOT 612M on a link cable that is stowed in the rear vent port One EP6 Female Chassis GEOT 613F on the back connector panel is used as output to feed the next GEO D A wiring diagram is printed on the connection panel located on the back of each cabinet The EP6 AP6 connectors are linked in parallel within the enclosures see the Connections Diagrams section of this manual EP6 AP6 Pin 1 2 3 4 5 6 GEO D10 Rear 8 LF 16 Q Front 12 LF MF amp 1 4 HF 16 Q Not Connected Passive Mode 1 Negative 2 Positive 3 Negative 4 Positive GEO D10 Rear 8 LF 16 Q Front 12 LF MF 16 Q 1 4 H 160 Active Mode 1 Negative 2 Positive 3 Negative 4 Positive 5 Negative 6 Positive IMPORTANT NEVER USE a male AP6 connector to feed the signal High voltages and currents are delivered from the amplifiers to the GEO D system d We GEO D10 REAR CONNECTOR PANEL 2 1 2 Configuring GeoD10 for Passive or Active Mode WARNING GEO D SERIAL 0100 to 1610 PASSIVE FILTERS DO NOT OPERATE PROPERLY IN ACTIVE MODE IF YOUR GEO D s ARE WITHIN THESE
21. A750 7 GEOD BTBUMPER GEOD BUMPER GEOD EXBAR2 Section 5 7 GEO SUB Cluster Two Rigging Points LEVA1500 GEOD EXBAR3 GEOD BUMPER GEO D RIGGING PROCEDURE Page 27 97 5 3 GEO D GEO SUB Ground Stacked Stacking a GEO D10 cluster requires the following accessories e 1x GEO D Main Bumper GEOD BUMPER e 1x GEO D Bumper Stands kit GEOD BUDP e 6x GEOD push pins per stacked GEO D10 or GEO SUB BLGEOD e or 1 x GEOD shoulder bolts and nuts kit for fixed installations per stacked GEO D GEOD BNFIX IMPORTANT Ensure platform ground riser is solid enough to support stacked cluster weight distributed on four points and perfectly horizontal 5 3 1 Allowed stacked configurations IMPORTANT Allowed Stacked Configurations are 4 GEO D maximum or 1 GEO SUB max bottom 3 GEOD max top or 2 GEO SUB Bumper angle must never exceed 6 5 5 3 2 Installing Bumper Stands on Bumper e Install bumper stands and nuts according to drawing below IMPORTANT Make sure nuts are properly positioned on both sides of the bumper These are mandatory for system safety e Adjust length of each stand so that desired bumper angle is achieved bumper side edge angle in relation to horizontal ensure that bumper front edge is perfectly horizontal B IR i INSTALLING BUMPER STANDS Im Page 28 97 GEO D RIGGING PROCEDURE 5 3 3 Bumper to first GEO D10 assembly IMPORTANT
22. Always look beneath PA wings to inspect the deck support and if necessary ask for the stage scrims and dressings be removed to allow access If the stage surface slopes as it does in some theatres ensure that the system is prevented from sliding forwards due to vibration This may require the fitting of timber battens to the stage floor For outdoor systems ensure that that the system is protected from wind forces which might cause the ground stack to become unstable Wind forces can be huge especially upon large Systems and should never be underestimated Observe meteorological forecasts calculate the worst case effect upon the system prior to erection and ensure that the system is secured appropriately Take care when stacking cabinets Always employ safe lifting procedures and never attempt to build stacks without sufficient personnel and equipment Never allow anyone whether operators artists or members of the public to climb onto a ground stacked PA system Anyone who needs to climb over 2m 6 ft high should be fitted with suitable safely equipment including a clip on harness Please refer to local Health and Safety legislation in your territory Your dealer can help with advice on access to this information Apply the same attention to all safety matters when de stacking systems Be aware that safety procedures are as important in the truck and in the warehouse as they are at the venue GEO D RIGGING PROCEDURE Page 21 97 5
23. EO SUB compression chain and no compression on the system Disconnect the bottom GEO SUB from the second GEO D Bumper and remove the Bottom Extension Bar EX3 NB As the system is lowered it is good practise to disconnect as many loudspeaker cables as can be reached without climbing the array This ensures that a cable should not be accidentally forgotten when the system is separated Damage to the connector will occur should this mistake be made Angle adjustment push pins should be removed from the angle setting and inserted in the FIX hole so that Geo SUB s sit flat on the dolly Lift the dolly manually below the array and connect it to the bottom GEO SUB with 4 push pins Carefully lower the array so that the dolly being on the ground is not being submitted to the entire cluster weight Disconnect the first block of 2 GEO SUB s at the connection between 3 and 4 bottom cabinets Carefully lift the array using both motor hoists until the array is clear Ensure the array is vertical at all times Repeat the procedure for all cabinets Remove the GEO D compression chain from the GEO D extension bar EX2 and remember to replace all the axes back in their respective beams 5 8 Fixed installations For fixed installation where GEOD GEO SUB clusters are permanently in position and do not need to be removed push pins can be replaced with GEOD BNFIX kit Stacking or Rigging procedures are identical to the ones described above
24. EOD 10mm diameter x 20 mm length connect the top GEO D10 to the bumper GEO D RIGGING PROCEDURE Page 43 97 e Position the bumper on the first GEO D10 by lifting or lowering bumper assembly with motor hoists e Link the GEO D10 to the bumper assembly using the four 10mm x 20mm push pins front bumper connects at GEO D10 front articulation point rear bumper connects at LIFT GEO D10 rigging plates holes e Check that all push pins are in their locked position e Ensure that no objects have been placed accidentally on the top of the bumper as they may fall when the system is lifted a FIRST GEO D10 TO BUMPER ASSEMBLY RIGHT CONFIGURATION LEFT CONFIGURATION 5 5 3 First to second GEO D 10 FIRST TO SECOND GEO D10 Page 44 97 GEO D RIGGING PROCEDURE 4 push pins BLGEOD 10mm diameter x 20 mm length connect first to second GEO D10 2 additional push pins are required for angle adjustment e Lift bumper and top GEO D10 assembly and position the next GEO D10 below the assembly with NEXO logo on the same side than the upper cabinet e Lower bumper and top GEO D10 assembly carefully until the first and second GEO D10 side rigging plates locate Use front grid rear vent ports or handle to guide the assembly The rigging plates have been designed to locate against each other and so align the holes correctly e Connect the upper GEO D link bar to the lower GEO D
25. GEO D flying system by doing so IMPORTANT DO NOT attempt to make any changes to the angle adjustements when the compression pull up force is applied 5 7 6 Positioning the cluster e Liftthe GEO SUB array to the height determined in GeoSoft GeoSoft array height definition is for the top surface of the topmost cabinet e Adjust the bumper angle as determined in GeoSoft by lowering or lifting rear motor hoist so that the front height does not change e Check all GEO SUB angles with an inclinometer e Once the bumper is in definitive position a secondary safety steel must be fitted this secondary safety steel should link the bumper to a suitable point in the supporting structure IMPORTANT The requirements for secondary safety systems vary with territories However the secondary safety steel MUST have a SWL equivalent to or greater than that of the rigging system r APPLYING COMPRESSION AND SETTING BUMPER ANGLE GEO D RIGGING PROCEDURE Page 65 97 5 7 7 De rigging and loading out Taking the system down is just a case of doing the reverse procedure to flying the array However there are some important factors to consider Lower the array running the two motor hoists simultaneously until the bottom cabinet is just off the floor main bumper being horizontal Rotate the chain hoist lever counter clockwise until there is no tension on the G
26. GEOD Dolly Storage Tra IMPORTANT GEOD Dolly Storage Tray are designed for 3 or 4 GEO D s bumper or case GEOSUB Dolly Storage Tray is designed for up to 2 GEO SUB s bumper or case Never exceed these quantities FROM PACKAGED TO FLOWN GEO D10 S GEO D RIGGING PROCEDURE Page 41 97 5 5 GEO D Cluster Flying Setup 2 motors Flying a GEO D10 cluster from 2 motors requires the following accessories e 2x Motors properly rated e 1x GEO D Main Bumper GEOD BUMPER e 1x GEO D Short Extension Bar GEOD EXBAR1 e 1x GEOD Front Extension Bar if strong positive tilt is required GEOD EXBAR4 e 1x GEOD Bottom Bumper GEOD BTBUMPER e 1x GEOD Chain Lever Hoist LEVA0750 or LEVA1500 e 1x Chain Bag CHBAG e 6x GEOD push pins per flown GEO D10 BLGEOD e or 1x GEOD shoulder bolts and nuts kit for fixed installations per flown GEO D GEOD BNFIX IMPORTANT Each of front rear motor and chain lever hoists must be rated to support the entire cluster weight Please check configurations in Geosoft2 for proper motor and chain lever hoists rating 5 5 1 Bumper Assembly e Strong bumper positive tilt only connect the Front Extension Bar Bumper through the Link Points the with the two axes using corresponding holes see drawing below and ensure that these axes are properly locked with supplied R clips o oo
27. Link Points o o o EN o LINKING GEOD BUMPER AND EXTENSION BAR EXBAR4 e Connect the Short Extension Bar EX1 to the Main Bumper through the Link Points the with the two axes using corresponding holes see drawing below and ensure that these axes are properly locked with supplied R clips Link Points Link Points LINKING GEOD BUMPER AND EXTENSION BAR EX1 e Link the motor hoists to the Bumper Extension Bar assembly to Front and Rear Rigging Points with the two axes using corresponding holes see drawing below and ensure that these axes are properly locked with supplied R clips e Attach the chain hook of the LEVA500 or LEVA1500 Chain Lever Hoist to the Compression Point see drawing below Page 42 97 GEO D RIGGING PROCEDURE Front Rigging Rear Rigging Point Paint Compression CONNECTING FRONT REAR MOTORS AND CHAIN LEVEL HOIST 5 5 2 Bumper to first GEO D10 assembly IMPORTANT GEO D10 can be flown Left or Right Left means Nexo logo on front grid is left as seen from front Right means Nexo logo on front grid is right as seen from front GEO D10 can be connected to bumper Left or Right by simply flipping the cabinets upside down do not reverse rigging plates Whenever possible NEXO recommends symmetrical designs preferably NEXO logo inwards in stereo configurations LEFT CONFIGURATION RIGHT CONFIGURATION 4 push pins BLG
28. NEXO J GEO D Series D10 10 Tangent Array Module Geo Sub Directional Sub bass SS L User Manual Page 2 97 PLEASE READ CAREFULLY BEFORE PROCEEDING GEO Technology is radically new thinking The GEO R amp D Project has to date resulted in the following patent applications e The GEO Hyperboloid Reflective Wavesource differs radically from the megaphone variant type horns you know and love or hate Tried and true methods will produce entirely unexpected results HRW technology produces precise and predictable results e The Configurable Directivity Flange A waveguide that allows the operator to alter its behaviour An unprecedented NEXO development that is easy to use once you know how and when e The Directivity Phase Device needs no operator input to function but it is reassuring to know that the coupling of the midrange of the system is considered as important as the high frequencies e GEO s DSP driven Cardioid Dipolar Sub bass devices are a new approach to controlling LF VLF acoustic energy GEO is not hard to use when you understand how The technology behind GEO is revolutionary but it is grounded in years of practical experience with the problems of delivering high quality professional sound to large audiences at high SPL levels The GEO toolbox includes GEOSoft a simple yet powerful and highly predictive design tool The array assembly system is keyed to the design software and will ea
29. NT GEO D10 can be flown Left or Right Left means Nexo logo on front grid is left as seen from front Right means Nexo logo on front grid is right as seen from front GEO D10 can be connected to bumper Left or Right by simply flipping the cabinets upside down do not reverse rigging plates Whenever possible NEXO recommends symmetrical designs preferably NEXO logo inwards in stereo configurations LEFT CONFIGURATION RIGHT CONFIGURATION 4 push pins BLGEOD 10mm diameter x 20 mm length connect the top GEO D10 to the bumper e Position the bumper on the first GEO D10 by lifting or lowering bumper assembly with motor hoist e Link the GEO D10 to the bumper assembly using the four 10mm x 20mm push pins front bumper connects at GEO D10 front articulation point rear bumper connects at LIFT GEO D10 rigging plates holes e Check that all push pins are in their locked position e Ensure that no objects have been placed accidentally on the top of the bumper as they may fall when the system is lifted GEO D RIGGING PROCEDURE Page 35 97 RIGHT CONFIGURATION LEET CONFIGURATION 5 4 4 First to second GEO D 10 I FIRST TO SECOND GEO D10 Page 36 97 GEO D RIGGING PROCEDURE 4 push pins BLGEOD 10mm diameter x 20 mm length connect first to second GEO D10 2 additional push pins are required for angle adjust
30. O SUB RIGGING PLATE GEO D RIGGING PROCEDURE Page 23 97 5 2 2 Rigging Accessories Rigging Accessories are e Bumper GEOD BUMPER e Short Extension Bar GEOD EXBAR1 e Compression Wheel for Short Extension Bar EXBAR1 GEOD ORP e Two legs Bridle GEO BRIDLE e Long Extension Bar GEOD EXBAR2 e Bottom Extension Bar GEOD EXBAR3 e Front Extension Bar GEOD EXBAR4 e Bottom Bumper GEOD BTBUMPER e Chain Lever Hoists LEVA0750 or LEVA1500 e Chain Bag CHBAG 145 Push Pins BLGEOD IE e Shoulder Bolts and Nuts GEOD BNFIX e Bumper Stands stacking kit GEOD BUDP GEOD EXBAR4 GEOD BUMPER GEOD EXBAR1 GEOD ORP GEOD EXBAR2 GEOD EXBAR3 oo x4 6 x GEO BRIDLE GEOD BTUMPER GEOD LEVA750 amp LEVA150 CHBAG BLGEOD GEOD BNFIX GEOD BUDP IMPORTANT All GEOD GEO SUB Rigging Components are specifically rated in agreement with structural computations Never use other accessories including push pins when assembling GEO D GEO SUB clusters than the ones provided by NEXO NEXO will decline responsability over the entire GEOD GEO SUB rigging system if any component is purchased from different supplier Page 24 97 GEO D RIGGING PROCEDURE 5 2 3 Configurations and operating mode General Principle GEO D10 GEO SUB rigging system operates in compression mode pull back force applied between the extreme bottom cabinet and the top bumper set angles between cabinets When the array is lifted into positi
31. O SUB s are driven form an AUX output NX242 is fed with two signals coming from different Sources If those two sources MAIN output amp AUX send are not exactly in phase delay is introduced into the crossover between the GEO D array and the GEO SUB s It is then mandatory to use proper measurement tool to optimize phase response Why is it unlikely that AUX and MAIN outputs have the same phase e Signal paths are likely to be different any filter modifying the bandwidth and EQ of the signal is also affecting the phase Example a 24dB oct high pass filter set at 15Hz is affecting amplitude of the signal by only 0 6dB at 30Hz but the phase shift is 90 At 100Hz we can still measure 25 of phase shift e Limiting bandwidth with a low pass filter can introduce a phase difference of up to 180 completely out of phase at the cross over point e f the signal is passing though any digital equipment between 1 4ms and 2 2ms is being added around 70 phase shift at 100Hz due solely to the converter delay The additional delay due to the processing itself look ahead compressor delay can be quite important as well If both outputs are not measured in the actual configuration it is very likely that phase alignment will not be correct Page 74 97 SYSTEM ALIGNMENT GUIDELINES Consequences of badly aligned systems Mis aligned systems have lower efficiency i e for the same SPL the system will have to be driven harder activ
32. S amp ACCESSORIES LIST MODEL DRAWING DESCRIPTION Nylon Cover for e 3 GEO D10 e 1 GeoD BKM or 1GEOD BUMPER e 1 GEOD DOLLY Nylon Cover for e 4 GEO D10 e 1 GeoD BKM or 1GEOD BUMPER e 1 GEOD DOLLY GEOD DCOVER GEOD DCOVER4 Nylon Cover for e 2GEO SUB e 1 GeoD BKM or 1GEOD BUMPER e 1 GEOSUB DOLLY GEOSUB DCOVER GEOD RAINCOBP Rain Cover for GEOD BUMPER GEOD RAINCO Rain Cover for up to 4 GEOD BLT RAP T RAP for BLGEOD GEOT CABLE 1m Cable For Geo D10 GEOT 613F EP6 Female Connector GEOT 612M AP6 Male Connector USER NOTES Page 93 97 12 USER NOTES Page 94 97 USER NOTES France Nexo S A PA du Pr de la Dame Jeanne BP5 F 60128 PLAILLY FRANCE Tel 33 3 44 99 00 70 Fax 33 3 44 99 00 30 E mail info nexo fr www nexo sa com
33. a preset threshold matching the maximum usable value as determined from laboratory measurements Any part of the signal exceeding the threshold is sent to the VCEQ control buffer while the VCEQ acts as an instantaneous very short attack time limiter to prevent displacement from exceeding the maximum permissible value Temperature Control Each sense signal is fed into a shaping filter one per transducer each one producing a signal proportional to the instantaneous current flowing into the voice coil of the transducer After rectification this signal is integrated with attack and release time constants equivalent to the thermal time constants of the voice coil and chassis producing a voltage which is representative of the instantaneous temperature of the voice coil Digital servo amp protections Analogue path Digital Audio NX242 Digital TDcontroller Partial BLOCK DIAGRAM When this voltage reaches the threshold value corresponding to the driver s maximum safe operating temperature the VCA becomes active to reduce the NX242 s output signal level until the effective temperature falls below the maximum usable value In order to avoid detrimental effects induced by very long release time constants produced by the temperature detection signal system output being reduced for an extended period pumping effects etc the detection signal
34. able Directivity flanges ii 18 5 GEOD Bee Ucht 19 5 ROAR LN EA I ci SS MS O Ee 19 VS MAN 61214751 IERI eee m 22 5 3 GEO D GEO SUB Ground Stacked oe treo tote t e eee 27 54 GEO D Cluster Flying Setup 1 motot DEE 32 5 5 GEO D Cluster Flying Setup 2 motors o reete ctore te oce ento heres 41 5 6 GEO SUB GEO D Combined Cluster Flying Setup 2 motors required 49 5 7 GEO SUB Cluster Flying Setup 2 motors reguiredl area 58 5 8 Fixed installations EE 65 5 9 Testing and Maintenance of the system 66 6 NEXO NX242 Digital Controller for GEO D and GEO SUB 67 6 1 NX242 Proprietary Functions EE 67 6 2 Qardidd LF and VEF EE 69 6 3 GEO D NX242 Setups description aie ies ENEE 69 6 4 Trouble shooting EEN 70 CONTENTS Page 7 97 7 System alignment guidelines ennnnnnns 72 4 GEO SUB GEO D Cluster design E 72 7 2 Stacked GEO SUB s and Flown GEO D S ere 72 7 3 Flown or Stacked combined GEO SUB s and GEO Dschusierg 73 7 4 Separate GEO SUB and GEO D clusters oic eee ns 73 7 5 Driving the GEO SUB s from the AUX send sse 73 7 6 Recommended installation tools and equipment 74 8 GEO D GEO SUB Array System Check List 75 8 1 Are the NX242 Digital TDcontrollers properly configured sss 75 8 2 Are the amplifiers properly configured sss 75 8 3 Are the amps and the NX properly conneched sse 75 8 4 Are the speaker
35. ach side see figure below IMPORTANT The push pins for SAFETY PIN MUST BE FITTED holes must always be inserted first and stay in position permanently NEVER REMOVE THEM ONCE CABINETS ARE SUSPENDED Insert two additional 10mm x 20mm push pins in the front holes see figure above Lift the bumper and two first GEO SUB s to a height that allows convenient access to the linking bars and the angle setting holes Insert 1 additonal push pin to the required angle value hole on each side Check that all 6 push pins are locked Page 62 97 GEO D RIGGING PROCEDURE SAFETY PIN MUST BE FITTED HOLE IMPORTANT Ensure angle settings are identical on both sides of the cabinet 5 7 4 Subsequent GEO SUB s e Repeat the above section steps until all GEO SUB s are in place As the assembly is lifted angles between GEO SUB s cabinets will remain at 0 whatever the linking bar positions e NB angle settings are free to be adjusted while the system is clear of the ground provided that rear pull up force is not applied GEO D RIGGING PROCEDURE Page 63 97 5 7 5 Applying compression with the Chain Lever Hoist e Once the GEO SUB assembly is completed connect the second GEO D Main Bumper below the last GEO SUB with the 10mm x 20mm push pins inserted in the FIX bottom hole see drawings below e Connect the Bottom Extension Bar EX3 to the Main Bumper through the Link Points with the two axes using correspon
36. ad this manual carefully Also be familiar with the manuals and safe working procedures for any ancillary equipment that will be used with the GEO D GEO SUB Rigging System e Applied forces and moments are strongly cabinet quantity and angle configuration dependent Cluster configuration must be implemented and validated in Geosoft2 prior to installation e Ensure that all local and National regulations regarding the safety and operation of flying equipment are understood and adhered to Information on these regulations can usually be obtained from Local Government Offices e When deploying a GEO D GEO SUB system always wear protective headwear footwear and eye protection e Do not allow inexperienced persons to handle a GEO D GEO SUB system Installation personnel should be trained in loudspeaker flying techniques and should be fully conversant with this manual Page 20 97 GEO D RIGGING PROCEDURE Ensure that motor hoists hoist control systems and ancillary rigging components are currently certified as safe and that they pass a visual inspection prior to use Ensure that public and personnel are not allowed to pass beneath the system during the installation process The work area should be isolated from public access Never leave the system unattended during the installation process Do not place any object no matter how small or light on top of the system during the installation procedure The object may fall when the syste
37. aker cables must be used ensure that they do not remain coiled while in use 2 2 Amplifier Selection NEXO recommends high power amplifiers in all cases Budget constraints are the only reason to select lower power amplifiers A lower power amplifier will not reduce the chances of driver damage due to over excursion and may actually increase the risk of thermal damage due to sustained clipping If an incident occurs on an installation without protection the fact that amplifiers only generating half their rated output power 3dB are used will not change anything in respect of possible damage This is due to the fact that the RMS power handling of the weakest component in the system is always 6 to 10 dB lower than the amplifier rating GEO D GENERAL SET UP INSTRUCTIONS Page 13 97 2 2 1 GEO D10 recommended amplification GEO D10 is rated for very high power handling and has a 16 Ohms nominal impedance per channel Passive 2 ways or Active 3 ways These high impedance values allow connection of 3 to 6 cabinets in parallel for each amplifier channel Nexo recommends amplifiers in agreement with table below Recommended Amplifier GEO D10 Passive Mode 3 in parallel 5 3 Ohms load GEO D10 Active Mode 3 in parallel 5 3 Ohms load Channel 1 LF Rear 1750 to 3100 W 4 Ohms Channel 2 LF MF Front HF in Passive Mode 1750 to 3100 W 4 Ohms Channel 3 HF in Active Mode 1750 to 3100 W 4 Ohms 1750 to 3
38. al Then turn on the back speaker you should notice a massive reduction at the back and additional level at the front This test must be done in addition to the usual polarity test 6 4 7 Using the wrong NX242 setups for a given cabinet Each NX242 setup is tailored for a certain NEXO loudspeaker Using the wrong setup will create safety and quality problems Always check that every cabinet in your system is being driven by the correct NX242 setup 6 4 8 Connections To ensure correct electronic behaviour and to guarantee specifications and EMC performance a NX242 must be properly wired Always use balanced connectors with the shield connected to pin 1 on both sides For more wiring recommendations please refer to the application note in the NX242 manual update Page 72 97 SYSTEM ALIGNMENT GUIDELINES 7 SYSTEM ALIGNMENT GUIDELINES The NX242 s factory delay presets are optimised to provide the best possible crossover between the GEO D and GEO SUB systems The reference point for this adjustment is the front of each cabinet This means that the internal delays needed to achieve a correct time alignment are set for cabinets standing next to each other with both fronts aligned We recommend that the system is adjusted so that arrivals from GEO D and GEO SUB are coincident at a fairly distant listening position 7 1 GEO SUB GEO D Cluster design Cluster design must be done with Geosoft2 which provides very intuitive and fast me
39. aratus to rain or moisture alert the user to the presence of presence of uninsulated dangerous important operating and voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to persons maintenance servicing instructions in the literature accompanying the appliance To avoid electrical shock do not remove covers Dangerous voltages exist inside Refer all servicing to qualified personnel only PLEASE READ CAREFULLY BEFORE PROCEEDING Page 5 97 HIGH SOUND PRESSURE LEVELS Exposure to extremely high noise levels may cause permanent hearing loss Individuals vary considerably in susceptibility to noise induced hearing loss but nearly everyone will lose some hearing if exposed to sufficiently intense noise for a sufficient period of time The U S Government s Occupational and Health Administration OSHA has specified the following permissible noise level exposures Sound Duration Per Day In Hours Sound Level dBA Slow Response 8 90 6 92 4 65 3 97 2 100 1 102 1 105 Vo 110 14 or less 115 According to OSHA any exposure in excess of the above permissible limits could result in some hearing loss Ear plugs or protectors to the ear canals or over the ears must be worn when operating this amplification system in order to prevent permanent hearing loss if exposure is in excess of the limits as set forth above To ensur
40. are precisely matched to the GEO D Series cabinets and include sophisticated protection systems as well as advanced cardioid directivity DSP algorithms Using GEO D Series cabinets without a properly connected NX242 amp NX Tension Card will result in poor sound quality and can damage components Arrays of less than 3 x GEO D10 will provide poor dispersion control and are neither recommended nor supported Array design Sub bass GEO SUB directional sub extends system low frequency response down to 35 Hz Active 5 6 HF 3 4 LF MF Front 1 2 4 LF Rear Passive 5 6 Not Connected 3 4 LF MF HF Front 1 2 LF Rear Speaker cables Rigging System Please refer to the GEO user manual before any operation As part of a policy of continual improvement NEXO reserves the right to change specifications without notice a Response curves and data anechoic far field above 200 Hz half space anechoic below 200 Hz b Sensitivity amp peak SPL will depend on spectral distribution Measured with band limited pink noise Refers to the specified 3 dB range Data are for speaker processor recommended amplifier combinations c Directivity curves and data 1 3 octave smoothed frequency response normalized to on axis response Data obtained by computer processing of off axis response curves d Please refer to the GEO D user Manual Usable range data frequency response capability wit
41. ass filters are used to filter out frequencies that could possibly degrade the performance of the TDcontroller and amplifiers The filters are optimised to work in conjunction with overall system response The high pass filters are also extremely important as they help control excursion at very low frequencies which is a major feature for system reliability This is one of the main reasons to avoid using setups which are not designed for the cabinet you are using Equalising acoustical response NEXO loudspeakers are acoustically designed for maximum efficiency over their operating bandwidth The NX242 provides the correction required to obtain a flat system response Active rather than passive attenuation allows the lowering of amplifier voltages for a given output SPL and therefore increases the maximum SPL achievable with the same amplifier Active equalisation can also extend a NEXO loudspeaker s frequency response especially at low frequencies where acoustical performance is limited by cabinet size While many DSP processors can provide this type of EQ none can include the extensive measurement facilities and listening tests employed by NEXO R amp D when adjusting NX242 setups for a particular loudspeaker Crossover section Crossover between different bands is tuned for every set up of every cabinet The crossover is designed to ensure the best phase alignment possible throughout the crossover overlap region Each crossover is made
42. at Geo D s sit flat on the dolly Lift the dolly manually below the array and connect it to the bottom GEO D with 4 push pins Carefully lower the array so that the dolly being on the ground is not being submitted to the entire cluster weight Disconnect the first block of 3 GEO D s at the connection between 3 and 4 bottom cabinets Carefully lift the array using both motor hoists until the array is clear Ensure the array is vertical at all times Repeat the procedure for all cabinets Remove the GEO D compression chain from the GEO D extension bar EX2 slide the extension bar into the bumper and remember to replace all the axes back in their respective beams Page 58 97 GEO D RIGGING PROCEDURE 5 7 GEO SUB Cluster Flying Setup 2 motors required Flying a GEO SUB cluster is very similar to what has been described in the above sections except e Long Extension Bar EX2 instead of EX1 has to be used to extend compression point because of GEO SUB depth e An additional GEO D Main bumper and a Bottom Extension Bar EX3 replace the GEO D bottom bumper bottom compression point being much further from the GEO SUB rigging plates bottom pick up point has to be a lot stronger However the section below details all steps to be completed for a safe setup Flying a GEO SUB cluster requires e 2x Motors properly rated e 2x GEO D Main Bumper GEOD BUMPER e 1x GEOD Long Extension Bar GEOD EXBAR2 e 1x GEOD Front Extension Ba
43. ating the displacement amp temperature protection at lower output levels Both sound quality and reliability will decrease as the system is stressed Precautions amp Checks Before using the AUX of a mixing desk ensure that MAIN and AUX outputs are in phase Always apply identical EQ or processing on both channels so that the phase relationship will not be altered Never add additional low pass filtering on the SUB or high pass filtering on the main system Inverting polarity on one channel should always result in a massive difference near the crossover point If that is not the case the system is no longer aligned 7 6 Recommended installation tools and equipment Tape measure should be 30m 100ft in length and be of durable fibre material Have one per array available to speed up the installation process Laser Inclinometer For measuring vertical and horizontal angles in the venue An ideal product is the Calpac Laser projecting a dot version which costs approximately 60 Digital remote inclinometer with a remote sensor in the bumper and a meter unit at ground level to ensure precise installation of the cluster NEXO GeoSight system predicts the stationary angle of the array even while it is swinging and has a green laser mounted coincident to and parallel with the axis of the topmost cabinet Spirit level used to ascertain the trueness of the surface from which the angle measurements originate Range
44. can exhibit manufacturing tolerances for the same model of 1dB or more Some amplifiers may have been modified possibly without any label indicating the new values Others may have gain switches fitted internally where it is impossible for the user to verify the actual setting without opening the amplifier casing e n cases where you don t know the gain of your amplifier or want to check it please follow this procedure 1 Unplug any loudspeakers from the amplifier outputs 2 With a signal generator feed a sine wave at 1000Hz at a known voltage say 0 5V to the input of the amplifier under test 3 Measure the voltage at the output of the amplifier 4 Calculate the gain using the formula Gain 20 LOG10 Vout Vin Some examples Vin Gain 32dB 37dB 1 4V sensitivity 1350Wrms 0 1V LV 2V 4V 7 1V 0 5 V 5V 10 V 20 V 35 4V 1V 10V 20V 40 V 70 8 V Remember that constant sensitivity settings will give a different gain value when the amplifier power is different NEXO recommends low gain amplifiers 26dB is recommended as it is at the same time adequately low and quite common amongst amplifier manufacturers This gain setting improves signal to noise ratio and allows all preceding electronic equipment including the NX242 TDcontroller to operate at optimum level Remember that using a high gain amplifier will raise the noise floor proportionally Operating Mode Most two channel amplifiers available
45. cannot hurt anyone going below the cluster If any doubt NEXO strongly recommends removing them screws can be replaced by 10mm x 20mm push pins to facilitate such change BOTTOM LINK BAR TO BE REMOVED FROM LEFT CLUSTERS CONFIGURATION Page 38 97 GEO D RIGGING PROCEDURE IMPORTANT DO NOT attempt to make any changes to the angle adjustements when the compression pull up force is applied 5 4 7 Positioning the cluster e Adjust the bumper angle as determined in GeoSoft2 by rotating the lever from the bottom of the cluster e Check all GEO D angles with an inclinometer e Liftthe GEO D array to the height determined in GeoSoft2 GeoSoft2 array height definition is for the top edge of the topmost cabinet e Once the bumper is in definitive position a secondary safety steel must be fitted this secondary safety steel should link the bumper to a suitable point in the supporting structure IMPORTANT The requirements for secondary safety systems vary with territories However the secondary safety steel MUST have a SWL equivalent to or greater than that of the rigging system APPLYING COMPRESSION AND SETTING BUMPER ANGLE GEO D RIGGING PROCEDURE Page 39 97 5 4 8 De rigging and loading out Taking the system down is just a case of doing the reverse procedure to flying the array However there are some important factors to consider Lower the array until the bottom cabinet is just off the floor Ro
46. curves and data anechoic far field above 400 Hz half space anechoic below 400 Hz Usable range data freguency response capability with TD crossover slopes removed b Sensitivity amp peak SPL will depend on spectral distribution Measured with band limited pink noise Refers to the specified 3 dB range Data are for speaker processor recommended amplifier combinations c Directivity curves and data 1 3 octave smoothed frequency response normalized to on axis response Data obtained by computer processing of off axis response curves d Please refer to the user manual Page 80 97 TECHNICAL SPECIFICATIONS 10 10 15 20 25 9 2 2 GEO SUB dimensions 10 20 1 2 515 mm DE S amp in 29 1 2 744 mm 1131 mm 44 1 2 9 2 3 GEO SUB diagrams dB Level Sound pressure ohm Amplitude log Impedance ke a MN 50 k HA 20 A LI LA s Y d s l 1 lil i rtili CTT 1 1 A j A 4 20 50 100 200 500 m 20 so 100 200 500 1k x 5k 10k 20k Frequency Hz F Geo SUB Crossover 1 Soct log smoothing valuesscaled M F Geo SUB Overlap 13oct lo
47. ding holes see drawing below and ensure that these axes are properly locked with supplied R clips e Check the array according to the Checklist procedure described later in this manual e Attach the main hook of the Chain Lever Hoist to the rear of the Bottom Extension Bar EX3 LINK POINT LINK POINT COMPRESSION POINT Page 64 97 GEO D RIGGING PROCEDURE e Rotate the fingerwheel clockwise until the chain is taught e Make a final check that the Chain Lever Hoist is correctly installed e Rotate the lever to apply the pull up force to the bottom of the array notice that as the chain gets shorter the cabinets in the array close together to the angles set by the angle adjustments push pins As the chainload tensions ensure that no twisting occurs on the chain e When all of the cabinets are closed together required force to rotate the lever becomes much stronger This is the indication that the angles have been correctly set e store the surplus chain in the chain bag supplied The chain bag should be clipped to the chain IMPORTANT DO NOT attempt to force on LEVA750 or LEVA1500 lever once you feel it resisting strongly to rotation you might damage
48. e adapted and that stand height does not exceed 1 40m 55 never move the stand while the speaker is in position Connection and powering precautions remove all connected cables before moving the speaker system turn off AC power of all power amplifier units before connecting the speaker system when turning on the AC power to the audio system always turn on the power amplifier last when turning the AC power off always turn off the power amplifier first when used in cold conditions a gradual power ramp up should applied to the system on an 5 mn period to allow the loudspeaker components to stabilize during the very first minutes of usage Inspect the speaker system periodically Page 4 97 PLEASE READ CAREFULLY BEFORE PROCEEDING The lightning flash with arrowhead SAFETY INSTRUCTIONS FOR NEXO TD CONTROLLERS NEXO ANALOGUE PSTDCONTROLLERS NX242 DIGITAL CONTROLLER NXAMP4x1 AND NXAMP4x4 POWERED CONTROLLERS ARE CLASS 1 APPARATUS AND MUST BE EARTHED THE GREEN AND YELLOW WIRE OF THE MAINS CORD MUST ALWAYS BE CONNECTED TO AN INSTALLATION SAFETY EARTH OR GROUND THE EARTH IS ESSENTIAL FOR PERSONAL SAFETY AS WELL AS THE CORRECT OPERATION OF THE SYSTEM AND IS INTERNALLY CONNECTED TO ALL EXPOSED METAL SURFACES Read these instructions Keep these instructions Heed all warnings Follow all instructions Do not use this apparatus near water Clean only with dry cloth Do not block any ventilation openings Install i
49. e against potentially dangerous exposure to high sound pressure levels it is recommended that all persons exposed to eguipment capable of producing high sound pressure levels such as this amplification system be protected by hearing protectors while this unit is in operation DISPOSAL OF OLD ELECTRICAL amp ELECTRONIC EQUIPMENT This symbol on the product or on its packaging indicates that it shall not be treated as household waste Instead it shall be handed over to the applicable collection point for the recycling of electrical and electronic equipment By ensuring this product is disposed of correctly you will help prevent potential negative consequence for the environment and human health which could otherwise be caused by inappropriate waste handling of this product The recycling of materials will help to conserve natural resources For more detailed information about recycling of this product please contact your local city office your household waste disposal service or the shop where you purchased the product Page 6 97 CONTENTS CONTENTS PLEASE READ CAREFULLY BEFORE PROCEEDING sise 3 ea giz KEN 6 BE Tt UGTIONN E 8 2 GEO D General Set up Instructions nes 10 Bal e EE 10 22 Amplifier Selection seems 12 3 NS 1 Simulation SONT ane st SE 16 4 Configurable Directivity Device nent 17 4 1 Installing 8 removing GEO s Configurable Directivity flanges 17 4 2 When 8 where to use Configur
50. e the chain hoist lever counter clockwise until there is no tension on the GEO D compression chain and no compression on the system Disconnect the bottom GEO D from the bottom bumper and remove the bottom bumper from the array Link cables must be disconnected and stowed away in the recesses in the rear of each cabinet NB As the system is lowered it is good practise to disconnect as many loudspeaker cables as can be reached without climbing the array This ensures that a cable should not be accidentally forgotten when the system is separated Damage to the connector will occur should this mistake be made Angle adjustment push pins should be removed from the angle setting and inserted in the FIX hole so that Geo D s sit flat on the dolly Lift the dolly manually below the array and connect it to the bottom GEO D with 4 push pins Carefully lower the array so that the dolly being on the ground is not being submitted to the entire cluster weight Disconnect the first block of 3 GEO D s at the connection between 3 and 4 bottom cabinets Carefully lift the array using both motor hoists until the array is clear Ensure the array is vertical at all times Repeat the procedure for all cabinets Remove the GEO D compression chain from the GEO D extension bar slide the extension bar into the bumper and remember to replace all the axes back in their respective beams Page 48 97 GEO D RIGGING PROCEDURE 5 5 8 Rigging a
51. eed exactly as above bottom cabinet must always be a GEO SUB GEO D10 GEO SUB GEO D10 MAXIMUM ALLOWED STACKED CONFIGURATION Page 32 97 GEO D RIGGING PROCEDURE 5 4 GEOD Cluster Flying Setup 1 motor Flying a GEO D10 cluster from 1 motor requires the following accessories 1 x Motor properly rated 1 x Geo Bridle GEO BRIDLE 1 x GEO D Main Bumper GEOD BUMPER 1 x GEO D Short Extension Bar GEOD EXBAR1 1 x GEOD Front Extension Bar if strong positive tilt is required GEOD EXBAR4 1 x GEO D Compression Wheel GEOD ORP 1 x GEO D Bottom Bumper GEOD BTBUMPER 1 x GEOD Chain Lever Hoist LEVA0750 or LEVA1500 1 x Chain Bag CHBAG 6 x GEOD push pins per flown GEO D10 BLGEOD or 1 x GEOD shoulder bolts and nuts kit for fixed installations per flown GEO D GEOD BNFIX IMPORTANT Motor and chain lever hoist must be rated to support the entire cluster weight Please check configurations in Geosoft2 for proper motor and chain lever hoists rating 5 4 1 Allowed One Rigging Point Configurations IMPORTANT One rigging point mode is strictly limited to GeoD clusters no Geo Sub allowed Maximum GeoD quantity allowed for this mode is 8 Compression Wheel and Bridle are designed for Extension Bar EXBAR1 and must not be used with Extension Bar EXBAR2 5 4 2 Bumper Assembly Strong bumper positive tilt only connect the Front Extension Bar Bumper through the Link Points the with the two axes using corre
52. encies in the use of these items The GEO D GEO SUB Rigging System has been optimised for the deployment of curved vertical tangent arrays of GEO D GEO SUB loudspeakers Vertical angle adjustment between cabinets has been limited to specific settings to ensure correct acoustic coupling The GEO D GEO SUB Rigging System is a professional precision tool set and should be handled with extreme care Only persons who are fully conversant with the operation of the GEO D GEO SUB Rigging System and provided with suitable safety equipment should deploy GEO Arrays Misuse of the GEO D GEO SUB Rigging System could lead to dangerous consequences Used and maintained correctly the GEO D GEO SUB Rigging System will give many years of reliable service in portable systems Please take the time to read and understand this manual Always use GEOSoft2 to determine the optimum angle settings for a particular venue hang point and curved vertical GEO D GEO SUB Applied forces and moments are strongly cabinet quantity and angle configuration dependent Cluster configuration must be implemented and validated in Geosoft2 prior to installation 5 1 1 Flown Systems Safety e Always inspect all the rigging components and cabinets for damage before assembly Pay special attention to the lifting points and safety clips If you suspect that any of the components are damaged or defective DO NOT USE THE AFFECTED PARTS Contact your supplier for replacements e Re
53. es e Insert 1 additonal push pin to the required angle value hole on each side e Check that all 6 push pins are locked IMPORTANT Ensure angle settings are identical on both sides of the cabinet 5 6 4 Last GEO SUB to First GEO D10 4 push pins BLGEOD 10mm diameter x 20 mm length connect first to second GEO SUB 2 additional push pins are required for angle adjustment LAST GEO SUB TO FIRST GEO D e Lift bumper and top GEO SUB assembly and position the next GEO SUB below the assembly with NEXO logo on the same side than the upper cabinet e Lower bumper and top GEO SUB assembly carefully until the GEO SUB and GEO D10 side rigging plates locate Use front grid rear vent ports or handle to guide the assembly The rigging plates have been designed to locate against each other and so align the holes correctly e Connect the upper GEO SUB link bar to the lower GEO D10 rigging plate or lower link bar to upper rigging plate for Right configuration by inserting one 10mm x 20 mm push pin in the SAFETY PIN MUST BE FITTED hole on each side see figure below IMPORTANT The push pins for SAFETY PIN MUST BE FITTED holes must always be inserted first and stay in position permanently e Insert two additional 10mm x 20mm push pins in the front holes see figure above e Liftthe cluster to a height that allows convenient access to the linking bars and the angle setting holes e Insert 1 additonal push pin to the requ
54. finder measuring device either a Disto type laser measure or an optical laser rangefinder can be used Devices such as the Bushnell Yardage Pro sports rangefinders provide sufficiently accuracy and are easy to use They have the additional advantage of working very well in bright sunlight Electronic calculator with trigonometric functions to calculate the height from ground level to points in the room The formula to calculate height of a point from measured angle and distance is Height of point Sin vertical angle in degrees x distance to point NB Take care when using spreadsheets as they calculate using radians by default To convert degrees to radians use the formula Angle in radians 3 142 x Angle in degrees 180 Computer Laptop or Desktop PC running Windows 2000 or XP with the current version of NEXO GeoSoft2 installed It is not possible to configure a Geo tangent array properly without using GeoSoft2 Note that when GeoSoft2 designs are prepared prior to arrival at the venue it is often necessary to modify or update the design to accommodate special circumstances A PC is absolutely essential to make such changes Audio Analysis Software recommended but not absolutely essential programs such as SIA Smaart Pro Spectralab or Spectrafoo enable rapid and detailed analysis of the installation Consider taking a training course in using one of these tools if you are not already competent with them it will pay di
55. g smoothing valuesscaled FO Geo SUB front impedance FC Geo SUB rear Impedance 10k 20k Frequency Hz TECHNICAL SPECIFICATIONS Page 81 97 9 3 GEO D GEO SUB Rigging system 9 3 1 GEO D GEO SUB Bumper 10 254mm 27 1 2 702 mm WEIGHT 45 KG 99 2 LBS 9 3 2 GEO D Short Extension Bar EX1 21 29 65mm lt Y 127 95 mm 18 7 2 472 mm WEIGHT 5 3 KG 11 7 LBS Page 82 97 TECHNICAL SPECIFICATIONS 9 3 3 9 3 4 GEO D ORP Compression Wheel for EX1 Onl 95mm 51mm WEIGHT 0 250KG 0 55 LBS 9 3 5 GEO BRIDLE WEIGHT 3 KG 6 6 LBS 9 3 6 GEO D Long Extension Bar EX2 O o O o E 2 1 2 65mm M 3 1 2 95 mm 411 29 1052 mm WEIGHT 13 1 KG 28 9 LBS TECHNICAL SPECIFICATIONS Page 83 97 9 3 7 GEO SUB Bottom Extension Bar EX3 Y T o o 2 1 2 1 65mm 11 2 95mm 48 1225mm H WEIGHT 16 1 KG 35 5 LBS 9 3 8 GEO D Front Extension Bar EX4 81 29 216mm 12 65mm 141 29 367mm WEIGHT 6 9 KG 15 2 LBS 9 3 9 GEO D Bottom Bumpe
56. h TD crossover slopes removed Page 78 97 TECHNICAL SPECIFICATIONS 9 1 2 GEO D10 Dimensions 29 1 2 744 mm 10 9 1 3 GEO D10 Diagrams 15 10 10 20 25 dB Level Sound pressure 29 1 2 750 mm din A V I KE ohm Amplitude log Impedance N TP ad 20 50 100 FC GeoD10impedancefront speakers 200 500 ak 2k 5k FC GeoD 0 impedance back speakers rama rem 10k Frequency Hz vs s metase 20k TECHNICAL SPECIFICATIONS Page 79 97 9 2 GEO SUB Directional Sub Bass 9 2 1 System specifications PRODUCT FEATURES GEO SUB Components 1 x 18 46cm long excursion neodymium 8 Ohm drivers amp 2 x 12 30cm neodynium drivers 515 x 744 x 1131 mm 20 1 2 x 29 1 2 x 44 1 2 Height x Width x Depth Shape 10 Trapezoidal Weight Net 86 kg 189 6 Ibs Connectors 2 x NLAMP SPEAKON 4 pole In amp Through Construction Baltic birch ply finish with structured black coating Front finish Molded Dark Grey Metal Grill Flying points Integral flying system Intercabinet angle adjustments 0 2 0 315 0 5 0 8 1 25 2 0 3 1
57. he bumper to a suitable point in the supporting structure IMPORTANT The requirements for secondary safety systems vary with territories However the secondary safety steel MUST have a SWL equivalent to or greater than that of the rigging system APPLYING COMPRESSION AND SETTING BUMPER ANGLE GEO D RIGGING PROCEDURE Page 57 97 5 6 9 De rigging and loading out Taking the system down is just a case of doing the reverse procedure to flying the array However there are some important factors to consider Lower the array running the two motor hoists simultaneously until the bottom cabinet is just off the floor main bumper being horizontal Rotate the chain hoist lever counter clockwise until there is no tension on the compression chain and no compression on the system Disconnect the bottom GEO D from the bottom bumper and remove the bottom bumper from the array Link cables must be disconnected and stowed away in the recesses in the rear of each cabinet NB As the system is lowered it is good practise to disconnect as many loudspeaker cables as can be reached without climbing the array This ensures that a cable should not be accidentally forgotten when the system is separated Damage to the connector will occur should this mistake be made Angle adjustment push pins should be removed from the angle setting and inserted in the FIX hole so th
58. ight damage GEO D flying system by doing so IMPORTANT DO NOT attempt to make any changes to the angle adjustements when the compression pull up force is applied 5 5 6 Positioning the cluster e Liftthe GEOD array to the height determined in GeoSoft GeoSoft array height definition is for the top surface of the topmost cabinet e Adjust the bumper angle as determined in GeoSoft by lowering or lifting rear motor hoist so that the front height does not change e Check all GEO D angles with an inclinometer e Once the bumper is in definitive position a secondary safety steel must be fitted this secondary safety steel should link the bumper to a suitable point in the supporting structure IMPORTANT The requirements for secondary safety systems vary with territories However the secondary safety steel MUST have a SWL equivalent to or greater than that of the rigging system APPLYING COMPRESSION AND SETTING BUMPER ANGLE GEO D RIGGING PROCEDURE Page 47 97 5 5 7 De rigging and loading out Taking the system down is just a case of doing the reverse procedure to flying the array However there are some important factors to consider Lower the array running the two motor hoists simultaneously until the bottom cabinet is just off the floor main bumper being horizontal Rotat
59. ired angle value hole on each side e Check that all 6 push pins are locked Page 54 97 GEO D RIGGING PROCEDURE IMPORTANT Ensure angle settings are identical on both sides of the cabinet 5 6 5 First to second GEOD 10 4 push pins BLGEOD 10mm diameter x 20 mm length connect first to second GEO D10 2 additional push pins are required for angle adjustment e Lift cluster and position the next GEO D10 below the assembly with NEXO logo on the same side than the upper cabinet e Lower cluster carefully until the first and second GEO D10 side rigging plates locate Use front grid rear vent ports or handle to guide the assembly The rigging plates have been designed to locate against each other and so align the holes correctly e Connect the upper GEO D link bar to the lower GEO D rigging plate or lower link bar to upper rigging plate for Right configuration by inserting one 10mm x 20 mm push pin in the SAFETY PIN MUST BE FITTED hole on each side see figure below IMPORTANT The push pins for SAFETY PIN MUST BE FITTED holes must always be inserted first and stay in position permanently NEVER REMOVE THEM ONCE CABINETS ARE SUSPENDED SAFETY PIN MUST BE FITTED HOLE 66066 i o e Inserttwo additional 10mm x 20mm push pins in the front holes see figure above hsTEM RIGGING e Liftthe cluster to a height that allows convenient access to the linking bars and
60. is modulated by another voltage integrated with faster time constants that match the subjective perception of sound level This allows the controller to reduce the effective operating duration of the HF TEMPERATURE PEAK SIMULATION temperature limiter and make it sound more natural while the efficiency of protection is fully preserved and protection thresholds are kept as high as possible Ap Ea SHELVINGI Physiologic Dynamic Control INPUT VU METER EES INPUT VU METER The Physiologic Dynamic Control is intended to avoid unwanted effects produced by long attack time constants By anticipating the operation of Q E E the temperature limiter it prevents a high level audio signal appearing 2 suddenly then being kept up for long enough to trigger the temperature Ag limiter Without this a rough and delayed gain variation would result that INPUT R INPUT L would be quite noticeable and unnatural NEXO NX242 DIGITAL CONTROLLER FOR GEO D AND GEO SUB Page 69 97 The Physio control voltage acts independently on the VCA with its operation threshold slightly 3 dB above that of the temperature limiter and a low compression ratio its optimised attack time constant allows it to start operating without any subjectively unpleasant transient effects Peak Limiter The peak limiter primary function is to avoid massive clip
61. l systems such as GEO D amp GEO SUB incorrect adjustment of the NX242 can lower the quality amp safety of your system Listed below are the most common errors encountered by NEXO Technical Support 6 4 1 Operation of Multiple TDcontrollers Typically GEO D GEO SUB systems require multiple NX242 s per side Eventually two or more NX242 s will operate within the same cluster It is mandatory to verify the consistency of the setups and adjustment between processors to avoid the problems described below IMPORTANT When using multiple NX242 s in a single array all parameters should be identical and set to proper values NEXO NX242 DIGITAL CONTROLLER FOR GEO D AND GEO SUB Page 71 97 6 4 2 Amplifier Power MENU 2 7 If the amplifier power MENU 2 7 is set to a value below the amplifer s actual power the peak limiter of the NX242 will trigger continually creating audible distortion Please note that this peak limiter is not set to act as a compressor on the signal It is intended to minimize the clipping of the amplifier by operating slightly after the amplifier s clipping point One way to properly adjust this parameter is to set amplifier power at maximum 5000W and decrease the value until the amplifier and TDcontroller clip at the same time 6 4 8 Amplifier Gain MENU 2 6 It is very important to check the gain of each channel These values should be set in agreement with amplifier gain The second line of the MENU2 6 disp
62. lays the gain as seen by the NX242 to ease the setting of this parameter 6 4 4 Gains If your amplifier gains are not the same on each channel you will have to adjust the inter channel gain in order to compensate for this amplifier gain difference 6 4 5 Delays Multiple NX242 s can be used on a single GEO D array When changing the delay in one NX242 TDcontroller that is part of a multi controller system take great care to have exactly the same delay setting in all NX242 TDcontrollers that receive the same input signal i e all NX242 s that are fed from the Left output of the mixing console should have the same delay settings A Tangent Array is very sensitive to delay differences between sections of the array in the same line You could experience coverage problems if all delays applied to a Tangent Array are not equal Please refer to the chapter in the NX242 User Manual on setting delay for proper time alignment between GEO D s and GEO SUB s 6 4 6 Reversed Cardioid Pattern Polarity checks are often performed while the system is being set up Keep in mind that cardioid speakers may also require a coverage test If you invert two outputs of the NX242 you could have the main lobe inverted and firing to the rear It may be quite hard to detect a reversed cardioid pattern when it involves one section of a large array A good practice is to test the each cabinet in the array with the front speakers only The system is then omni direction
63. low LED for each channel Individual Mute Solo buttons and red LED for each channel Amp Sense amp Peak green amp red LED s for each channel FLASH EPROM Software updates upgrades new system setups available on www nexo sa com Rear Panel RS232 connector for serial com 2 x RJ45 connectors with NXTension ES4 Card 1 RJ45 2 RJ11 with NXTension CAI Card Dimensions amp Weight 1U 19 Rack 230 mm 9 Depth 4kg 9 4 2 Front and Rear Panel view GeoD Passive mode ___Crossover 80Hz 9 9 9 ES C S Lo Lo esch Z TECHNICAL SPECIFICATIONS 9 4 3 Block Diagram Page 86 97 L TANNVHO LNdLNO FE LU P NOUVINWIS eng EWS lt 3univudnat aH pwwo fe EE ESCH umo EESTI I3NNVHO INdINO ENOLIVINHIS MIA pueuwog DEET mme TM
64. m is flown and is likely to cause injury Secondary safety steels must be installed once the system has been flown to the operating height Secondary steels must be fitted irrespective of requirements of the local safety standards applicable to the territory Ensure that the system is secure and prevented from pivoting around the motor hoist Avoid any form of excessive dynamic loading to the assembly structural computations on GEO D GEO SUB Rigging System are based on a 1 1 2 factor for hoist or motor acceleration NEVER attach any item to the GEO D GEO SUB system other than the GEO D GEO SUB accessories When flying outdoor systems ensure that the system is not exposed to excessive wind or snow loads and is protected from rainfall The GEO D GEO SUB Rigging System requires regular inspection and testing by a competent test centre NEXO recommend that the system is load tested and certified annually or more frequently if local regulations require When de rigging the system ensure that the same duty of care is given to the procedure as for the installation Pack GEO D GEO SUB components carefully to prevent damage in transit 5 1 2 Ground Stacking Safety Statistically many more injuries occur due to unstable ground stacked PA systems than those associated with flown systems There are several reasons for this fact however the message is clear Always survey the supporting structure upon which a ground stack is to be built
65. m x 20mm push pins inserted in the FIX bottom hole see drawings below Check the array according to the Checklist procedure described later in this manual Attach the main hook of the Chain Lever Hoist to the rear of the Bottom Bumper Manually raise the Bottom Bumper and rotate the fingerwheel clockwise until the chain is taught Make a final check that the Chain Lever Hoist is correctly installed Rotate the lever to apply the pull up force to the bottom of the array notice that as the chain gets shorter the cabinets in the array close together to the angles set by the angle adjustments push pins As the chainload tensions ensure that no twisting occurs on the chain When all of the cabinets are closed together required force to rotate the lever becomes much stronger This is the indication that the angles have been correctly set store the surplus chain in the chain bag supplied The chain bag should be clipped to the chain In case of Left configuration make sure that the bottom link bars cannot hurt anyone going below the cluster If any doubt NEXO strongly recommends removing them screws can be replaced by 10mm x 20mm push pins to facilitate such change BOTTOM LINK BAR TO BE REMOVED FROM LEFT CLUSTERS CONFIGURATION Page 46 97 GEO D RIGGING PROCEDURE IMPORTANT DO NOT attempt to force on LEVA750 or LEVA1500 lever once you feel it resisting strongly to rotation you m
66. ment e Lift bumper and top GEO D10 assembly and position the next GEO D10 below the assembly with NEXO logo on the same side than the upper cabinet e Lower bumper and top GEO D10 assembly carefully until the first and second GEO D10 side rigging plates locate Use front grid rear vent ports or handle to guide the assembly The rigging plates have been designed to locate against each other and so align the holes correctly e Connect the upper GEO D link bar to the lower GEO D rigging plate or lower link bar to upper rigging plate for Right configuration by inserting one 10mm x 20 mm push pin in the SAFETY PIN MUST BE FITTED hole on each side see figure below IMPORTANT The push pins for SAFETY PIN MUST BE FITTED holes must always be inserted first and stay in position permanently NEVER REMOVE THEM ONCE CABINETS ARE SUSPENDED SAFETY PIN MUST BE FITTED HOLE e Inserttwo additional 10mm x 20mm push pins in the front holes see figure above e Lift the bumper and two first GEO D10 s to a height that allows convenient access to the linking bars and the angle setting holes e Insert 1 additonal push pin to the required angle value hole on each side e Check that all 6 push pins are locked IMPORTANT Ensure angle settings are identical on both sides of the cabinet GEO D RIGGING PROCEDURE Page 37 97 5 4 5 Subsequent GEO D10 s e Repeat the above section ste
67. mplifier listening test by loading the amps with twice the number of cabinets considered for the application 2 speakers per channel instead of one 4 instead of 2 and running the amps up to the onset of clipping If the signal does not noticeably deteriorate the amplifier is well adapted overheating after approximately ten minutes is normal but thermal protection must not operate too quickly after starting this test Page 14 97 GEO D GENERAL SET UP INSTRUCTIONS 2 2 4 Amplifier settings Gain value Gain is the key to correct alignment of the system It is especially important to know the gain of all amplifiers used in your set up The tolerance should be about 0 5 dB In practice this can be difficult to achieve because e Some amplifier brands have an identical input sensitivity for models of different power rating this infers a different voltage gain for each model For example a range of amplifiers with different power outputs all having a published input sensitivity of 775mV OdBm or 1 55V 6dBm will have a wide range of actual gains the higher the power the greater the gain e Various other brands may offer constant gain but only within a given product range for example they may fit fixed input sensitivity only on their semi professional amps e Even if a manufacturer applies the constant gain rule to all models the value selected will not necessarily be the same as that chosen by other manufacturers e Some products
68. n accordance with the manufacturer s instructions Do not install near any heat sources such as radiators heat registers stoves or other apparatus including amplifiers that produce heat Do not defeat the safety purpose of the polarized or grounding type plug A polarized plug has two blades with one wider than the other A grounding type plug has two blades and a third grounding prong The wide blade or the third prong are provided for your safety If the provided plug does not fit into your outlet consult an electrician for replacement of the obsolete outlet US market Protect the power cord from being walked on or pinched particularly at plugs convenience receptacles and the point where they exit from the apparatus Only use attachments accessories specified by the manufacturer Unplug this apparatus during lightning storms or when unused for long periods of time Refer all servicing to qualified service personnel Servicing is required when the apparatus has been damaged in any way such as power supply cord or plug is damaged liquid has been spilled or objects have fallen into the apparatus the apparatus has been exposed to rain or moisture does not operate normally or has been dropped NC T i d The exclamation point within an symbol within an equilateral triangle WARNING To reduce the risk of fire or electric shock equilateral triangle isintended to is intended to alert the user to the do not expose this app
69. nd De rigging with GEOD Dolly Storage Tra IMPORTANT GEOD Dolly Storage Tray are designed for 3 or 4 GEO D s bumper or case GEOSUB Dolly Storage Tray is designed for up to 2 GEO SUB s bumper or case Never exceed these quantities FROM PACKAGED TO FLOWN GEO D10 S GEO D RIGGING PROCEDURE Page 49 97 5 6 GEO SUB GEO D Combined Cluster Flying Setup 2 motors required Flying a GEO SUB GEOD combined cluster is very similar to what has been described in the above section except a long Extension Bar EX2 instead of EX1 is required to extend top compression point because of GEO SUB depth However the section below details all steps to be completed for a safe setup Flying a combined GEO D10 GEO SUB cluster requires e 2x Motors properly rated e 1x GEO D Main Bumper GEOD BUMPER e 1x GEO D long Extension Bar GEOD EXBAR2 e 1x GEOD Front Extension Bar if strong positive tilt is required GEOD EXBAR4 e 1x GEOD Bottom Bumper GEOD BTBUMPER e 1x GEOD Chain Lever Hoist LEVA0750 or LEVA1500 e 1x Chain Bag CHBAG e 6x GEOD push pins per flown GEO SUB BLGEOD e or 1x GEOD shoulder bolts and nuts kit for fixed installations per flown GEO D GEOD BNFIX IMPORTANT Each of front rear motor and chain lever hoists must be rated to support the entire cluster weight Please check configurations in Geosoft2 for proper motor and chain lever hoists rating 5 6 1 Bumpe
70. ng filter less than 6 is positive gain more than 6 is negative gain 4 Disabled when using digital inputs 8 2 Are the amplifiers properly configured Gain Switch All channels GEO D and GEO SUB Stereo 26 dB None None 8 3 Are the amps and the NX properly connected Check that the sense lines on the NX242 s are properly connected by applying a signal to the corresponding output and verify that the correct Sense LED illuminates 8 4 Are the speakers properly connected and angled e Attach the first serie of modules to the bumper e Before flying verify that all channels of all modules are functioning properly e Make sure that each GEO D10 GEO SUB is producing the proper front rear summation when listening from behind the array switch the front drivers in and out You should hear a reduction in the LF range when the both front and rear drivers are on as compared to when the rear drivers Page 76 97 GEO D GEO SUB ARRAY SYSTEM CHECK LIST only are on When listening from the front you should hear a strong increase in the LF range when connecting the rear drivers To check that all front elements have the proper amplitude and phase you should listen to the upper boxes at a close distance 1 meter You should be able to move from the top to the bottom of the cluster without hearing any change in the tonal balance Verify that the angle settings are the same on both sides of each module Raise the bumper
71. no twisting occurs on the chain e When all of the cabinets are closed together required force to rotate the lever becomes much stronger This is the indication that the angles have been correctly set e Store the surplus chain in the chain bag supplied The chain bag should be clipped to the chain In case of Left configuration make sure that the bottom link bars cannot hurt anyone going below the cluster If any doubt NEXO strongly recommends removing them screws can be replaced by 10mm x 20mm push pins to facilitate such change BOTTOM LINK BAR TO BE REMOVED FROM LEFT CLUSTERS CONFIGURATION Page 56 97 GEO D RIGGING PROCEDURE IMPORTANT DO NOT attempt to force on LEVA750 or LEVA1500 lever once you feel it resisting strongly to rotation you might damage GEO D flying system by doing so IMPORTANT DO NOT attempt to make any changes to the angle adjustements when the compression pull up force is applied 5 6 8 Positioning the cluster e Lift the GEO SUB GEO D array to the height determined in GeoSoft GeoSoft array height definition is for the top surface of the topmost cabinet e Adjust the bumper angle as determined in GeoSoft by lowering or lifting rear motor hoist so that the front height does not change e Check all GEO SUB amp GEO D angles with an inclinometer e Once the bumper is in definitive position a secondary safety steel must be fitted this secondary safety steel should link t
72. on dimensions weight gravity center position forces moments working load and safety factor Geo D10 and GEO SUB Structural Analysis Reports have been validated by German Certification Organization RWTUV systems GmbH NS 1 installation package includes all NEXO User Manuals Structural Analysis Reports and Certificates PDF files which can be found in the last section of User Manuals NS 1 is a freeware available for all Nexo users Please contact your local distributor for licensing procedure IMPORTANT Never install a GEO D GEO SUB cluster without checking its acoustical performances and mechanical safety in NS 1 prior to installation Any question or bug report please contact technical nexo fr NS 1 GEO S12 ACOUSTIC PAGE CONFIGURABLE DIRECTIVITY DEVICE Page 17 97 4 CONFIGURABLE DIRECTIVITY DEVICE The GEO Wavesource controls dispersion of acoustic energy using an hyperboloid acoustical reflector in the coupling plane the vertical plane of a curved vertical tangent array and a diffraction slot in the non coupling plane the horizontal plane of a curved vertical tangent array The patented Configurable Directivity Device consists of bolt on flanges that alter the diffraction slot s exit flare rate 4 1 Installing amp removing GEO s Configurable Directivity flanges GEO D10 are shipped in the 80 dispersion configuration with the 120 flanges in a separate bag To change dispersion in
73. on all cabinets are at 0 1 and it is only when the pull up force is applied that the correct angles are obtained 2 Bumper angle is then set by adjusting front and rear motors 3 1 LIFTING CLUSTER VERTICALLY 2 APPLYING COMPRESSION 3 ADJUSTING BUMPER ANGLE In case GeoD10 cluster is flown from one rigging point 8 GEO D maximum no GEO SUB allowed array is lifted with all cabinets at 0 Pull back force and bumper angle are then set with the Chain Lever Hoist LEVA750 Please refer to sections below for detailed description 1 LIFTING CLUSTER VERTICALLY 2 APPLYING COMPRESSION 3 ADJUSTING BUMPER ANGLE GEO D RIGGING PROCEDURE Page 25 97 Described Cases Sections below describe GEO D10 and GEO SUB clusters rigging procedures for the following cases GEO BRIDLE z GEOD ORP GEOD EXBAR4 GEOD BUMPER GEOD EXBAR1 o o o o Section 5 4 GEO D Cluster One Rigging Point GEOD BUMPER GEOD EXBARI o o o o Section 5 5 GEO D Cluster Two Rigging Points EVA750 Fee KO oo 009 o p 20 00 E 2 D p GEOD BTBUMPER Page 26 97 GEO D RIGGING PROCEDURE GEOD BUMPER GEOD EXBAR2 IGEOD EXBAR4 Section 5 6 Combined GEO D GEO SUB Cluster Two Rigging Points LEV
74. ong Excursion Neodymium 8 Ohm Driver and 2x 12 30cm Neodynium 16 ohms LF drivers controlled by DSP advanced proprietary algorithm producing a 120 x 120 cardioid pattern Can be used in conjunction with GeoD in flown clusters or in ground stacked configuration e NX242 Digital TDcontroller and NXtension ES4 provides comprehensive control of GEO D loudspeakers in multiple configurations It allows Ethersound digital audio networking as well as remote control for all units in the network For a complete description of this unit please refer to the NX242 User Manual The NX242 DSP algorithms and parameters are fixed in software and updated regularly please consult the NEXO web site www NEXO fr or www NEXO sa com for the latest software releases INTRODUCTION Page 9 97 e GEO D Array Flying System A fully integrated and accurate flying system that provides safe flexible and simple means of flying GEO D Tangent Arrays NOTE GEO Tangent Arrays control the dispersion of acoustic energy with a high degree of precision Inclinometers and laser aiming tools are essential to ensure proper audience coverage when installing a GEO Tangent Array e NS 1 simulation software previously GEOfSoft2 assists in the design and implementation of vertical tangent GEO arrays Please consult the NEXO web site www NEXO fr or www NEXO sa com for the latest software releases Please devote your time and attention to reading this manual
75. ont 18 inch transducer 6 3 4 GEO SUB 8 GEOD Passive Mono Setups Hardware configuration e Input L R or L R can be selected in MENU 3 2 e Output 1 drives GEO SUB side firing 12 inch transducers e Output 2 drives GEO SUB front 18 inch transducer e Output 3 drives GEO D side firing LF 8 inch neodymium transducers e Output 4 drives GEO D front firing LF MF 12 inch neodymium transducers and the HF 3 inch voice coil 1 4 inch exit compression driver 6 3 5 GEO SUB 8 GEOD Setups Typical setup families are e GEOD WIDEBAND GEOD starts at 55 Hz This setup family is recommended for applications which are not VLF demanding e GEO SUB amp GEO D X OVER GEO SUB is low passed at 75 Hz and GEO D is high passed at 75 Hz This setup family is recommended when GEO SUB s are stacked and GEO D flown and distance between them exceeds 2 meters 6 feet e GEO SUB 8 GEO D OVERLAP GEO SUB is low passed at 300 Hz and GEOD is high passed at 75 Hz Therefore they overlap from 75 Hz to 300 Hz This setup family requires proper phase alignment between systems up to 300 Hz and is therefore is recommended when GEO SUB s and GEO D are flown together or when distance between them is lower than 2 meters 6 feet Please be aware that setups are periodically revised refer to the latest versions of the NX242 user manual and firmware www nexo sa com 6 4 Trouble shooting The NX242 has been designed to be user friendly However with highly technica
76. ontains no user serviceable parts If it should appear to be malfunctioning or damaged discontinue use immediately and have it inspected by qualified NEXO service personnel Water exposure Do not expose the speaker system to direct rain do not use it near water or in wet conditions Do not place containers with liquid on speaker system as they might spill into openings If any liquid such as water seeps into the speaker system have it inspected by qualified NEXO personnel SYSTEM DEPLOYMENT SAFETY RULES Read User Manual before deployment Before use of enclosed speaker system please ensure that anyone involved in system deployment understands the rigging stacking pole mounting safety rules as described in the speaker system User Manual Failure to do this exposes people to potential injury or death Always consult qualified NEXO personnel if the device installation requires construction work and make sure to observe the following precautions Mounting precautions choose mounting hardware and an installation location that can support the weight of the speaker system do not use speaker system handles for suspended installation do not expose speaker system to excessive dust or vibration or extreme cold or heat to prevent possibility of component damage do not place the speaker system in an unstable position from which it might fall accidentally if speaker systems uses a stand ensure that stand specifications ar
77. ping of the amplifier which can have some very audible artefacts and in some cases may be damaging to the loudspeakers Modulation of the amplifiers supply voltage rails can create very low frequencies or high frequency high level harmonics Since these occur after the NX242 in the signal path they are not filtered by the TDcontroller circuitry The threshold of the peak limiter is set by the user to match the amplifier s clipping point The second function of the peak limiter is to avoid huge amounts of power being sent to a driver Each driver is protected against overheating and overexcursion but there could be other failure modes that cannot be predicted by simulation especially mechanical damage to the cone Each driver is specified for a certain power handling and a factory set peak limiter threshold is tuned to avoid any abuse 6 2 Cardioid LF and VLF Cardioid LF and VLF is one of the key advances of the GEO D GEO SUB system This feature is only achievable with a total control of the DSP chain Although the basic concept as presented in audio text books is relatively simple producing a cardioid pattern from a loudspeaker without a major loss of efficiency requires advanced DSP processing Other loudspeaker management DSP devices do not provide the algorithms that the NX242 uses to optimise the cardioid operation of the GEO D10 and GEO SUB GEO D10 LF and GEO SUB dispersion are digitally set to a cardioid pattern by adjusting
78. ps until all GEO D10 s are in place As the assembly is lifted angles between GEO D10 s cabinets will remain at 0 whatever the linking bar positions e NB angle settings are free to be adjusted while the system is clear of the ground provided that rear pull up force is not applied 5 4 6 Applying compression with the Chain Lever Hoist e Once the GEO D10 assembly is completed connect the bottom bumper to the last GEO D10 with the 10mm x 20mm push pins inserted in the FIX bottom hole see drawings below e Check the array according to the Checklist procedure described later in this manual ZZ p PS L e Attach the main hook of the Chain Lever Hoist to the rear of the Bottom Bumper e Manually raise the Bottom Bumper and rotate the fingerwheel clockwise until the chain is taught e Make a final check that the Chain Lever Hoist is correctly installed e Rotate the lever to apply the pull up force to the bottom of the array notice that as the chain gets shorter the cabinets in the array close together to the angles set by the angle adjustments push pins As the chainload tensions ensure that no twisting occurs on the chain e Once all of the cabinets are closed together continuing rotating the lever will tilt the bumper down e Store the surplus chain in the chain bag supplied The chain bag should be clipped to the chain In case of Left configuration make sure that the bottom link bars
79. r 28 1 2 722mm ni 278mm WEIGHT 10 4 KG 22 9 LBS Page 84 97 TECHNICAL SPECIFICATIONS 9 3 10 GEO D Chain Lever Hoists MAX LOAD 750 KG 1650 LBS MAX LOAD 1500 KG 3300 LBS WEIGHT 10 3 KG 22 7 LBS WEIGHT 23 7 KG 52 2 LBS CHAIN LENGTH 6 M 16 7 FT CHAIN LENGTH 9M 29 5 FT 9 3 11 GEO D GEO SUB Push Pins GS AN EI e WEIGHT 0 046 KG 0 10 LBS WU OT TECHNICAL SPECIFICATIONS Page 85 97 9 4 NX242 TDcontroller with NX Tension Card 9 4 1 Specifications SPECIFICATIONS NX242 Digital TDcontroller Output Level 28 dBu Max into 600 Ohm load Dynamic Range 110 dBu THD Noise lt 0 002 flat setup for output at 27 5dBu Latency time 1 7ms on a flat setup Power Supply 90V 260V FEATURES Audio Inputs 2 Audio Inputs 24 bit converters Electronically Balanced 50k Ohm 2 XLR 3F Connectors 4 Digital Ethersound Inputs with NXTension ES4 Card Sense Inputs 4 Amplifier Sense Inputs Floating 150 kQ 18 bit converters 8 Pole Removable Strip Terminal Audio Outputs 4 Audio Outputs 24 bit converters Electronically balanced 50 Ohm 4 XLR 3M connectors 4 Digital Ethersound Outputs with NXTension ES4 Card enabled for compatible amplifiers only 24 bit data with 48 bit accumulator 200 MIPS Front Panel Menu A and Menu B buttons 16 characters by 2 lines display Select Wheel amp Enter button 4 IN Clip DSP Clip red LED s Speaker Protection yel
80. r Assembly e Strong bumper positive tilt only connect the Front Extension Bar Bumper through the Link Points the with the two axes using corresponding holes see drawing below and ensure that these axes are properly locked with supplied R clips o E oo Link Points F o 0 o EN LINKING GEOD BUMPER AND EXTENSION BAR EXBAR4 e Connect the Long Extension Bar to the Main Bumper through the Link Points the with the two axes using corresponding holes see drawing below and ensure that these axes are properly locked with supplied R clips LINK POINTS LINK POINTS Ojo ji Oo o LINKING GEOD BUMPER AND EXTENSION BAR EX2 Page 50 97 GEO D RIGGING PROCEDURE e H strong positive tilt is required front rigging point as to be extended further connect the Front Extension Bar Bumper through the Link Points the with the two axes using corresponding holes see drawing below and ensure that these axes are properly locked with supplied R clips e Link the motor hoists to the Bumper Extension Bar assembly to Front and Rear Rigging Points with the two axes using corresponding holes see drawing below and ensure that these axes are properly locked with supplied R clips e Attach the chain hook of the LEVA750 or LEVA1500 Chain Lever Hoist to the Compression Point see
81. r if strong positive tilt is required GEOD EXBAR4 e 1x GEO D Bottom Extension Bar GEOD EXBAR3 e 1x GEOD Chain Lever Hoist LEVA0750 or LEVA1500 e 1x Chain Bag CHBAG e 6x GEOD push pins per flown GEO SUB 2 GEO push pins for bottom GEO SUB BLGEOD e or 1 x GEOD shoulder bolts and nuts kit for fixed installations per flown GEO SUB GEOD BNFIX IMPORTANT Each of front rear motor and chain lever hoists must be rated to support the entire cluster weight Please check configurations in Geosoft2 for proper motor and chain lever hoists rating 5 7 1 Bumper Assembly e Strong bumper positive tilt only connect the Front Extension Bar Bumper through the Link Points the with the two axes using corresponding holes see drawing below and ensure that these axes are properly locked with supplied R clips o o o Link Points aos U LINKING GEOD BUMPER AND EXTENSION BAR EXBAR4 GEO D RIGGING PROCEDURE Page 59 97 e Connect the Long Extension Bar EX2 to the Main Bumper through the Link Points the with the two axes using corresponding holes see drawing below and ensure that these axes are properly locked with supplied R clips LINK POINTS LINK POINTS o 0 EA o o LINKING GEOD BUMPER AND EXTENSION BAR EX2 e f strong positive tilt is required fron
82. rred to 80 Figure below shows isocontour coverage for 80 and 120 configurations FIGURE 3 80 AND 120 CONFIGURATIONS ISOCONTOUR COVERAGE GEO D RIGGING PROCEDURE Page 19 97 5 GEO D RIGGING PROCEDURE Before proceeding with assembly of GEO D arrays please ensure that the components are present and undamaged A component list is appended to this manual In the event of any shortage please contact your supplier For maximum efficiency the GEO D rigging system requires three experienced persons for set up typically one motor hoist operator and one GEO D operator per side of the array Good synchronisation and crosscheck between the operators are key elements for a reliable and safe set up 5 1 SAFETY FIRST GEO D GEO SUB Rigging System structural computations and related documents are available in Geosoft2 or at Nexo info nexo fr upon request We include this section to remind you of safe practice when flying the GEO D GEO SUB system Please read it carefully However user must always apply his or her knowledge experience and common sense If in any doubt seek advice from your supplier or NEXO agent This manual offers guidance only for GEO D GEO SUB loudspeaker systems References in this manual to other rigging equipment such as motor hoists steels shackles etc are made to clarify the description of GEO D GEO SUB procedures The user must ensure that operators are properly trained by other ag
83. s properly connected and angled sssssssseeee 75 8 5 Final Pre Sound Check Check eiue nie eei lea eit 76 9 Technical Specification Sni n a aaa ea aa eaaa Ma aE Ea een ek 77 9 1 GEO D10 Vertical Tangent Array Module 77 9 2 GEO SUB Directional Sub Bass sr 79 9 3 GEO D GEO SUB Rigging SySIgI EE 81 9 4 NX242 TDcontroller with NX Tension Card 85 10 Connection Ee LTE 87 10 1 GEO D cluster to amplifiers and NX242 Stereo passive mode 87 10 2 GEOD cluster to amplifiers and NX242 Mono active mode 88 10 3 GEO SUB GEO D cluster to amplifiers and NX242 GeoD in Passive Mode 89 11 GEO D Series Parts 8 Accessories List ns 90 11 1 Array Modules 8 Control Electronics List 90 11 2 Accessories LISE iiti ua datione ib e mtl eatem Eu 90 12 USER NOTES me DT een nd 93 Page 8 97 INTRODUCTION 1 INTRODUCTION Thank you for selecting a NEXO GEO D Series Tangent Array System This manual is intended to provide you with necessary and useful information about your GEO System which includes the following products e D10 is a 10 Tangent Array Module It comprises 2x8 20cm 8 Ohms LF Drivers side firing 1x12 30cm Neodynium 16 ohms LF MF driver front and 1x3 voice coil 1 4 Throat 16 Ohm HF Driver loaded by a 5 Hyperboloid Reflective Wavesource M e Geo Sub is a Cardioid Dipole Sub bass It comprises 1x18 46cm L
84. should be set at the same value than GEO D s ie there should be no delay difference between systems Separate GEO SUB and GEOD clusters Delay must be set to compensate for horizontal distance offset between front edges When GEO SUB s and GEO D s are flown in separate clusters distance between clusters should be NX242 GEOD setup family OVERLAP e 1 25m 4 ft minimum center to center or 50cm 1 5 ft side to side e 1 75m 6 ft maximum center to center or 1m 3 ft side to side NX242 GEOD setup family X OVER e 1 25m 4 ft minimum center to center or 50cm side to side e No upper limit Driving the GEO SUB s from the AUX send It is quite common to use the AUX send of a mixing desk to drive the Sub section of a PA system This gives the mixing engineer more flexibility to set the level of the subbass relative to the main PA apply special effects or to use a different EQ on the Sub However it also raises some serious issues for the performance amp safety of the system mostly time alignment At NEXO great care is taken to design optimum phase alignment from one octave above to one octave below the crossover frequency point By doing so drivers are working perfectly together and providing the best efficiency possible It is then up to the user to adjust the delay on the NX242 to match the physical path difference of the different systems It is thus possible to get a well adjusted system even without measuring instruments If GE
85. sily enable you to deploy your design with great precision The NX242 Digital TDcontroller provides driver protection and system optimization as well as DSP driven cardioid pattern control for the GEO D10 Tangent Array Module and the GEO SUB Cardioid Dipole Sub bass GEO is a high precision system The GEO HRW controls acoustic energy more precisely than other multiple element waveguides It also makes GEO less forgiving of mistakes Whilst conventional horns never combine into a coherent array they may deliver acceptable results even if the design and deployment of the system is less than optimal This is not the case with GEO where careless installation produces catastrophic results A GEO Tangent Array is not a line array GEO Technology is equally effective in designing and deploying tangent horizontal arrays or curved vertical arrays For best results in a specific application the user needs to know how multi speaker arrays interact with audience geometry along with the benefits and drawbacks of curved vertical arrays and horizontal arrays Curved vertical tangent arrays require different design techniques For the past 20 years sound reinforcement professionals have worked with horizontal arrays that use conventional horns to deliver more or less equal power to equal angles Curved vertical arrays are designed to deliver more or less equal power to equal areas When arrays use conventional horns the lack of precision o
86. sponding holes see drawing below and ensure that these axes are properly locked with supplied R clips o o o Link Points ojo o EM LINKING GEOD BUMPER AND EXTENSION BAR EXBAR4 GEO D RIGGING PROCEDURE Page 33 97 Connect the Short Extension Bar EX1 to the Main Bumper through the Link Points the with the two axes using corresponding holes see drawing below and ensure that these axes are properly locked with supplied R clips Link Points Link Points LINKING GEOD BUMPER AND EXTENSION BAR EXBAR1 Connect the bridle ring to the motor hoist the bridle adjustable leg to the front rigging point and the bridle fixed length leg to the rear rigging point Attach the chain hook of the LEVA750 or LEVA1500 Chain Lever Hoist to the motor see drawing below after passing the chain through Short Extension Bar EX1 behind rear compression point Install the compression wheel by removing the axis located at compression point inserting the wheel and setting back the axis in position ensure that the axis is properly locked with supplied R clip and that chain is properly located behind the axis Lift the bumper assembly so that top GeoD can be connected at convenient height CONNECTING MOTOR BRIDLE WHEL AND CHAIN LEVEL HOIST Page 34 97 GEO D RIGGING PROCEDURE 5 4 3 Bumper to first GEO D10 assembly IMPORTA
87. structured black coating Molded Dark Grey Metal Grill Front finish Flying points Integral flying system Intercabinet angle adjustments 0 2 0 315 0 5 0 8 1 25 2 0 3 15 5 6 3 8 0 10 0 logarithmic steps SYSTEM SPECIFICATIONS GEO D10 with NX242 Tdcontroller amp NX tension Card Frequency response a 60 Hz 19 kHz 3 dB Usable range 6dB a 55 Hz 20 kHz Sensitivity 1W 1m b 105 dB SPL nominal 103 dB SPL wideband Peak SPL 1m b Configuration dependent d Dispersion c Vertical plane Configuration dependent d Horizontal plane Configurable 80 120 Low Frequency cardioid LF MF 300 Hz active MF HF 1 1 kHz Passive or Active internally configurable HF 16 Ohm LF MF front 16 Ohm LF rear 16 Ohm Recommended amplifiers HF 875 to 1550 Watts into 4 Ohms 3 GEO D10 in Parallel MF LF front 1750 to 3100 Watts into 4 Ohms LF rear section 1750 to 3100 Watts into 4 Ohms HF 1000 to 1800 Watts into 4 Ohms MF LF front 2000 to 3600 Watts into 4 Ohms LF rear section 2000 to 3600 Watts into 4 Ohms HF 1650 to 3000 Watts into 2 Ohms MF LF front 3300 to 6000 Watts Watts into 2 Ohms LF rear section 3300 to 6000 Watts Watts into 2 Ohms Crossover freguencies Nominal impedance 4 GEO D10 in parallel 6 GEO D10 in parallel SYSTEM OPERATION Electronic controller The NX242 Digital TDcontroller with NX Tension Card presets
88. t GEO SUB by lifting or lowering bumper assembly with motor hoists Link the GEO SUB to the bumper assembly using the four 10mm x 20mm push pins front bumper connects at GEO SUB front articulation point rear bumper connects at LIFT GEO SUB rigging plates holes Check that all push pins are in their locked position Ensure that no objects have been placed accidentally on the top of the bumper as they may fall when the system is lifted LIFT POINT LIFT POINT FIRST GEO SUB TO BUMPER ASSEMBLY LEET CONFIGURATION RIGHT CONFIGURATION GEO D RIGGING PROCEDURE Page 61 97 5 7 3 First to second GEO SUB 4 push pins BLGEOD 10mm diameter x 20 mm length connect first to second GEO SUB 2 additional push pins are required for angle adjustment FIRST TO SECOND GEO SUB Lift bumper and top GEO SUB assembly and position the next GEO SUB below the assembly with NEXO logo on the same side than the upper cabinet Lower bumper and top GEO SUB assembly carefully until the first and second GEO SUB side rigging plates locate Use front grid rear vent ports or handle to guide the assembly The rigging plates have been designed to locate against each other and so align the holes correctly Connect the upper GEO SUB link bar to the lower GEO SUB rigging plate or lower link bar to upper rigging plate for Right configuration by inserting one 10mm x 20 mm push pin in the SAFETY PIN MUST BE FITTED hole on e
89. t rigging point as to be extended further connect the Front Extension Bar Bumper through the Link Points the with the two axes using corresponding holes see drawing below and ensure that these axes are properly locked with supplied R clips e Link the motor hoists to the Bumper Extension Bar assembly to Front and Rear Rigging Points with the two axes using corresponding holes see drawing below and ensure that these axes are properly locked with supplied R clips e Attach the chain hook of the LEVA750 or LEVA1500 Chain Lever Hoist to the Compression Point see drawing below FRONT RIGGING REAR RIGGING POINT POINT COMPRESSION POINT O d CONNECTING FRONT REAR MOTORS AND CHAIN LEVEL HOIST 5 7 2 Bumper to first GEO SUB assembly IMPORTANT GEO SUB can be flown Left or Right Left means Nexo logo on front grid is left as seen from front Right means Nexo logo on front grid is right as seen from front GEO SUB can be connected to bumper Left or Right by simply flipping the cabinets upside down do not reverse rigging plates Whenever possible NEXO recommends symmetrical designs preferably NEXO logo inwards in stereo configurations Page 60 97 GEO D RIGGING PROCEDURE LEFT CONFIGURATION RIGHT CONFIGURATION 4 push pins BLGEOD 10mm diameter x 20 mm length connect the top GEO SUB to the bumper Position the bumper on the firs
90. t that current capability is doubled Typically only channel 1 input is active NEXO does not recommend Parallel Mono Mode for any GEO D10 or GEO SUB amplification Warning on amplifiers signal processing features Some high end amplifiers may include signal processing functions similar to those found in the NX242 TDcontroller loudspeaker offset integration limiter compressor etc Moreover when this processing is digital computation latency time can introduce a few milliseconds delay from input to output These functions are not adapted to specific system requirements and may interfere with the complex protection algorithms used in the NX242 NEXO do not advise using other protection systems in conjunction with the NX242 and they should be disabled IMPORTANT For proper system protection no latency time or non linear devices should be introduced between the output of the NX242 TDcontroller and the input of loudspeakers through use of DSP modules such as internal amplifier signal processing 2 2 5 Example For a 6 GEO D10 and 2 GEO SUB cluster and considering an amplifier model which is capable of delivering 2 x 3300W into 2 Ohms or 2 x 2300W into 4 Ohms NEXO recommends the following quantities and settings e GeoD Passive Mode 2 amplifiers 3 x GEO D10 per amplifier 1 channel LF rear 1 channel LF MF HF Front mode switch in Stereo position Gain switch in 26 dB gain position all dynamic or filter processing switches
91. tate the chain hoist lever counter clockwise until bumper is back to horizontal position and no tension is applied on the GEO D compression chain Disconnect the bottom GEO D from the bottom bumper and remove the bottom bumper from the array Link cables must be disconnected and stowed away in the recesses in the rear of each cabinet NB As the system is lowered it is good practise to disconnect as many loudspeaker cables as can be reached without climbing the array This ensures that a cable should not be accidentally forgotten when the system is separated Damage to the connector will occur should this mistake be made Angle adjustment push pins should be removed from the angle setting and inserted in the FIX hole so that Geo D s sit flat on the dolly Lift the dolly manually below the array and connect it to the bottom GEO D with 4 push pins Carefully lower the array so that the dolly being on the ground is not being submitted to the entire cluster weight Disconnect the first block of 3 GEO D s at the connection between 3 and 4 bottom cabinets Carefully lift the array until the array is clear Ensure the array is vertical at all times Repeat the procedure for all cabinets Remove the GEO D compression chain from the GEO D extension bar slide the extension bar into the bumper and remember to replace all the axes back in their respective beams Page 40 97 GEO D RIGGING PROCEDURE 5 4 9 Rigging and De rigging with
92. the angle setting holes e Insert 1 additonal push pin to the required angle value hole on each side e Check that all 6 push pins are locked GEO D RIGGING PROCEDURE Page 55 97 IMPORTANT Ensure angle settings are identical on both sides of the cabinet 5 6 6 Subsequent GEO D10 s e Repeat the above section steps until all GEO D10 s are in place As the assembly is lifted angles between GEO D10 s cabinets will remain at 0 whatever the linking bar positions e NB angle settings are free to be adjusted while the system is clear of the ground provided that rear pull up force is not applied 5 6 7 Applying compression with the Chain Lever Hoist e Once the GEO SUB GEO D10 assembly is completed connect the bottom bumper to the bottom GEO D10 with the 10mm x 20mm push pins inserted in the FIX bottom hole see drawings below e Check the array according to the Checklist procedure described later in this manual e Attach the main hook of the Chain Lever Hoist to the rear of the Bottom Bumper e Manually raise the Bottom Bumper and rotate the fingerwheel clockwise until the chain is taught e Make a final check that the Chain Lever Hoist is correctly installed e Rotate the lever to apply the pull up force to the bottom of the array notice that as the chain gets shorter the cabinets in the array close together to the angles set by the angle adjustments push pins As the chainload tensions ensure that
93. the front and rear loudspeakers phase and amplitude relationship Average rear to front attenuation is more than 12 dB 6 3 GEO D NX242 Setups description 6 3 1 GEO D10 Passive Mode Stereo Setups Hardware configuration e Input can be selected in the MENU 3 2 L R or L R e Output 1 drives left GEO D side firing LF 8 inch neodymium transducers e Output 2 drives left GEO D front firing LF MF 12 inch neodymium transducers and the HF 3 inch voice coil 1 4 inch exit compression driver e Output 3 drives right GEO D side firing LF 8 inch neodymium transducers e Output 4 drives right GEO D front firing LF MF 12 inch neodymium transducers and the HF 3 inch voice coil 1 4 inch exit compression driver 6 3 2 GEO D10 Active Mode Mono Setups Hardware configuration e Input can be selected in the MENU 3 2 L R or L R e Output 1 drives GEO D side firing LF 8 inch neodymium transducers e Output 2 drives GEO D front firing LF MF 12 inch neodymium transducer e Output 3 drives GEO D HF 3 inch voice coil 1 4 inch exit compression driver e Output 4 is not used Page 70 97 NEXO NX242 DIGITAL CONTROLLER FOR GEO D AND GEO SUB 6 3 3 GEO SUB Stereo Setups Hardware configuration e Input L R or L R can be selected in MENU 3 2 e Output 1 drives left GEO SUB side firing 12 inch transducers e Output 2 drives left GEO SUB 18 inch transducer e Output 3 drives right GEO SUB side firing 12 inch transducers e Output 4 drives right GEO SUB fr
94. the non coupling plane to 120 remove the front grill drawings below remove the three TORX head 25 screws per flange on each side of the GEO Waveguide drawings below install the 120 flanges with the six TORX screws re install the grid being carefull that the NEXO logo must be on the GEO Waveguide side REMOVING THE GRILL REMOVING THE FLANGES Page 18 97 CONFIGURABLE DIRECTIVITY DEVICE 4 2 When amp where to use Configurable Directivity flanges The diagrams show audience area coverage for a stereo system While the GEO cluster will deliver even SPL from the front to the rear of this audience area there are holes near the front in the centre and at the outside edges We cannot fill the outside coverage gaps without enlarging the centre gap and vice versa left figure below If 120 Configurable Directivity Devices are installed at the bottom cabinet of the clusters coverage will look more like the pattern in right figure below A y f 4 lt P DES t Rm e in x A y 54 7 6dB coverage all GEO D10 s in 80 configuration 6dB coverage bottom GEO D10 s in 120 configuration In curved vertical arrays the 120 Configurable Directivity Device can be used e Onthe bottom row of curved vertical arrays to fill in coverage gaps in the front rows e On all rows of curved vertical arrays in cases where 120 of horizontal coverage is prefe
95. thod to determine all cluster geometry parameters in relation to venue where cluster is implemented IMPORTANT Geosoft2 is a freeware downloadable on www nexo sa com Please check our website periodically for upgrades Never install a GEO D GEO SUB cluster without checking its acoustical performances and mechanical safety in Geosoft2 prior to installation Please contact your local distributor for assistance and or training on Geosoft2 7 2 Stacked GEO SUB s and Flown GEO D s Recommended NX242 GEOD setup family X OVER In the example below r being the distance from GEO D array to listener position and r being the distance from GEO SUB to listener position the distance difference is then r r specified meters or feet e r gt r the delay should be set on the GEO SUB NX242 TDcontroller e r lt r the delay should be set on the GEO D NX242 TDcontroller e To convert the result in time delay specified in seconds apply At r C r andr in meters C sound speed 343 m S The delay parameter is set in MENU 1 2 set the units to meters feet or seconds according to your preference Delay will have to be adjusted according to the distance difference r r see figure below SYSTEM ALIGNMENT GUIDELINES Page 73 97 7 3 7 4 7 5 Flown or Stacked combined GEO SUB s and GEO D s clusters Recommended NX242 setup family OVERLAP When GEO SUB s are flown or stacked within the GEO D array GEO SUB delay
96. verlap and interference masks errors in array design and aiming The highly precise GEO wavesource responds accurately consistently and predictably to the design and deployment of a curved vertical tangent array This is why the GEO rigging system is designed to control angular splay to 0 01 precision GEO curved vertical tangent arrays require different operational techniques Over the years system designers and operators have developed a number of signal processing techniques to disguise and partly overcome the limitations of horn design Frequency shading amplitude shading system tuning all of these are tools of the advanced sound system operator NONE OF THESE TECHNIQUES ARE APPLICABLE TO GEO TANGENT ARRAYS Instead of enhancing the array s performance they will severely degrade it Take time to learn how to get great results with GEO Technology It is an investment that will pay off in more Satisfied clients more efficient operating procedures and more recognition for your skill as a sound system designer and operator A comprehensive understanding of GEO theory tangent arrays and specific features of the GEO D Series will help you to operate your system at its full potential PLEASE READ CAREFULLY BEFORE PROCEEDING Page 3 97 PLEASE READ CAREFULLY BEFORE PROCEEDING BASIC PRECAUTIONS Do not open the speaker system or attempt to disassemble the internal parts or modify them in any way The speaker system c
97. vidends in increased performance of the system GEO D GEO SUB ARRAY SYSTEM CHECK LIST Page 75 97 8 GEO D GEO SUB ARRAY SYSTEM CHECK LIST It is essential to execute all these check steps prior to perform a sound check on the front end to the system Following this checklist step by step will prevent many troubles and will save time in the end 8 1 Arethe NX242 Digital TDcontrollers properly configured IMPORTANT If you must change any of the parameters listed above make sure that you use the same values on all NX242 s 8 1 1 NX242 settings Output Assignment NX Setup NXChannel 1 2 3 4 GEO SUB GEO D Passive Mono GEO SUB Rear GEO SUB Front GEO D Rear GEO D Front GEO SUB Stereo GEO SUB Rear GEO SUB Front GEO SUB Rear GEO SUB Front GEO D Passive Stereo GEO D Rear GEO D Front GEO D Rear GEO D Front GEO D Active GEO D Rear LF GEO D Front LF MF GEO D Front HF Output parameters Amp Amp Global Global Sense Speaker Headrom Gain 1 Power 1 Gain 2 Delay 2 Gain Qty 3 4 All channels GEO D and GEO SUB 26 dB 1600 W 8Q 0 dB 0 ms 0 dB 5 bars 1 values for recommended amplifier gain and power should be set in agreement with selected amplifiers specifications 2 Local gain and delay values are inter locked channel 1 amp 2 and 3 amp 4 3 Should be in agreement with implemented cluster acts on a shelving filter designed to compensate for LF coupling 6 GEOD is OdB gain on shelvi

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