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Yamaha v1.01 User's Manual

1. 10 20 50 100 200 500 1k Frequency Hz F Omni Mode FC Cardio Mode RS15 TECHNICAL SPECIFICATIONS Page 48 58 10 3 2 Polar plots Omni Mode 2xRS15 front Directional Mode 2xRS15 side Directional Mode 2xRS15 alternate RS15 TECHNICAL SPECIFICATIONS Page 49 58 Directional Mode 2xRS15 face to face 50cm 20 315 Hz 2 j ESA JS N Y me y 5 Es ness E ES d TR SE 4 Gre TA Ress AOA 315 Hz LE NZ Tin EI 100 Hz 125 Hz Page 50 58 RS15 TECHNICAL SPECIFICATIONS 10 4 RS15 Accessories 10 4 1 RS15 BUMPER Dimensions 43 8 1113 mm 555 mm 21 85 10 4 2 RS15 FPLATES Dimensions 224 57mm 10 4 3 RS 15 HANDLES Dimensions RS15 TECHNICAL SPECIFICATIONS Page 51 58 2 13 54 mm 10 4 4 RS15 WHEELS Dimensions Page 52 58 RS15 TECHNICAL SPECIFICATIONS 10 4 5 RS15 DOLLY Dimensions 10 4 6 RS15 Push Pins BLGEOS Dimensions ll __ 20mm E RS15 TECHNICAL SPECIFICATIONS Page 53 58 10 5 GEO 12 Analogue TDController 10 5 1 Specifications SPECIFICATIONS Audio Inputs Output Section 22
2. 1x RS15 1 channel of NXAMP4x1 in Bridge Stereo Mode 2 channels of NXAMP4x1 in 4 channels Mode 2 channels of NXAMP4x1 in Bridge Stereo Mode 2 x 5 2 channels of NXAMP4x1 in Bridge Stereo Mode 2 channels of NXAMP4x1 in Bridge Stereo Mode 1 channel of NXAMP4x4 in 4 channels mode 2 channels of NXAMP4x4 in 4 channels mode 4x 5 2 channels of NXAMP4x4 in 4 channels mode 2 channels of NXAMP4x4 in 4 channels mode 8 x 5 4 channels of NXAMP4x4 in 4 channels mode 4 channels of NXAMP4x4 in 4 channels mode RS15 SETUPS ON NEXO TD CONTROLLERS Page 19 58 4 RS15 SETUPS ON NEXO TD CONTROLLERS 4 1 Analogue GEOS12 TDController GEO 12 TDController parameters have been optimized for 1 x RS15 omni mode mono used in conjunction with 2 x GEO 1210 s or 2 Geo x S1230 s mono or stereo 4 2 Digital NX242 ES4 and NXAMP TDControllers At RS15 release time November 2007 46 setups combining RS15 with NEXO speakers are available in NX242 NXAMP load 2 43 Please consult www nexo sa com for upgrade releases RS15 4 RS15 omni 33Hz 90Hz 2 x RS15 cardio 33Hz 90Hz PS8 2x RS15 omni 35Hz 90Hz 2 x PS8 Wideband 1 RS15 cardio 35Hz 90Hz 2 x PS8 Wideband 2x RS15 omni 35Hz 90Hz 2 x PS8 X Over 1 RS15 cardio 35Hz 90Hz 2 x PS8 X Over PS10 2 x RS15 omni 35Hz 90Hz 2 PS10 Wideband 1 RS15 cardio 35Hz 90Hz 2 x PS10 Wideband 2 RS15 omni 35Hz 90Hz 2 PS10
3. 2 3 3 Cabling NEXO recommends the exclusive use of multi conductor cables to connect the system the cable kit is compatible with all the cabinets and there is no possible confusion between Front and Rear drivers 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 Lex 2 5 Sin mm Z in Ohm Lmax in meters The table below indicates these values for 3 common sizes Load Impedance Q 2 4 8 Cable section 1 5 mm AWG 14 2 5 mm AWG 12 4mm AWG 10 2 3 4 Example e Each RS15 driver has a 8 Ohms nominal impedance in omni mode both loudspeakers can be driven in parallel on one amplifier channel presenting therefore a 8 2 4 Ohms load impedance The maximum acceptable 2x2 5 mm AWG 12 cable length Lmax for RS15 with its 2 drivers in parallel is 10 meters e When driven in directional mode RS15 requires 2 amplifier channels presenting therefore two independent 8 Ohm load impedances The maximum acceptable 4x1 5 mm AWG 14 cable length Lmax for RS15 with its 2 drive
4. TILT ANGLE 0 5 10 15 20 25 30 35 40 45 GROUP DELAY ms 0 0 0 2 0 5 0 7 0 9 1 1 1 3 1 5 1 7 1 9 2 RS15s DISTANCE cm 0 0 7 9 15 8 23 6 31 1 38 5 45 5 52 2 58 5 64 3 GROUP DELAY ms 0 0 0 3 0 7 1 0 1 4 1 7 2 0 2 3 2 6 2 8 3 RS15s DISTANCE cm 0 0 11 9 23 7 35 3 46 7 57 7 68 3 78 3 87 7 96 5 GROUP DELAY t ms 0 0 0 5 0 9 1 4 1 8 2 2 2 7 3 0 3 4 3 8 4 RS15s DISTANCE cm 0 0 15 9 316 47 1 62 2 76 9 91 0 104 4 117 0 128 7 RAY SUBS IMPLEMENTATION Page 41 58 8 3 3 Coverage result Below figure shows coverage control over distance with a steering delay sequence corresponding to a 15 tilt down 12 RS15 ALTERNATE CLUSTER OVER 75M 200FT STEERED 15 DOWN 8 4 Aligning RS15s with main system 8 4 1 NEXO systems acoustic reference point The NX TDControllers factory presets are optimised to provide the best possible crossover between the RS15 as and PS8 PS10 PS15 GeoS8 Geo12 systems These crossover algorithms are defined for speaker acoustic reference points being aligned The acoustic reference point on all NEXO products is the front of each cabinet therefore e RS15 s reference point in Omni Mode is center of the front grid e RS15 s reference point in Directional Mode is center of the face opposite to connector panel RS15 REFERENCE POINT IN OMNI MODE RS15 REFERENCE POINT IN DIRECTIONAL MOD
5. Page 14 58 RS15 GENERAL INSTRUCTIONS 2 3 Speaker connection 2 3 1 Configuring Connector and Owner plates Owner and Connector plates can be exchanged depending on chosen directional configuration Please note that the connector plate can pass through the holes no unsoldering is therefore required e Directional Mode it is recommended to install the connector panel on the side which supports the rigging plates e Omni Mode it is recommended to install the connector panel on the side opposite to the drivers factory default configuration 0 9 Q o 9 CONNECTOR PLATE IN DIRECTIONAL MODE CONNECTOR PLATE IN OMNI MODE 2 3 2 RS15 connectors RS15 is connected through Speakon NL4FC plugs not supplied A wiring diagram is printed on the connection panel located on the back of each cabinet The 4 pins of the 2 Speakon sockets are connected in parallel within the enclosure Either connector can be used to connect an amplifier or to link to an additional RS15 cabinet Connectors are wired as follows Speakon NL4F Omni Mode Directional Mode Comment Connectors IST driver Right 1577 driver Rear Driver Next to Connector A Panel gt j 15 driver Right 157 driver Rear dri 21 15 driver Left 24 15 driver Left A RS15 GENERAL INSTRUCTIONS Page 15 58 DIRECTIONAL
6. coherence values are high typically above 75 If one of above conditions is not respected then distance measurement should be preferred 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 Spirit level used to ascertain the trueness of the surface from which the angle measurements originate Rangefinder 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 ve
7. 16 10 dBm typ into 600 Ohm load Back Panel switch on 6 0 6dB respectively Input Section Maximum input Level 22dBu CMRR 80dB 1kHz typ THD N 0 1 1kHz Typ for 10dBm Output Noisefloor S12TD 100 dBV for OdB switch position 22 Hz 22 kHz Unweighted Dynamic Range 111 dB Unweighted THD N at 60dBr sine wave 1kHz rel max output Crosstalk 104dB Filtering amp EQ L amp R 12dB oct Low Pass 12dB oct High pass crossover or overlap 4 Parameter EQs All factory defined Protections VCA temp SUB LF amp LF VCEQ disp SUB amp LF Peak Limiter all chanels Power compression regulation Power Supply 100 250 Volts continuous operation 50 60Hz Power 9W Peak Inrush current 0 5A Earth Lift Conformity Comply with safety objective of 73 23 EEC amp 89 336 EEC directives EN60065 12 2001 PRODUCT FEATURES EN55103 1996 CB scheme DK 8371 cULus 60065 AZSQ E241312 FCC part15 class B Two differential non floating L amp R Audio inputs 50 kOhm Two XLR 3F connectors Sense Inputs Three Amplifier Sense Inputs S12 L amp R LS 400 kOhm 6 Pole Removable Strip Terminal Applicable Products Audio Outputs Two L amp R 512 Audio outputs Balanced non floating 51 Ohm Two XLR 3M One Mono L R LS400 Audio output Balanced non floating 51 Ohm One XLR 3M Controls Gain switch back panel 3 positions 6 0 6dB Peak Limiter trimmer 1200W 600W 8 Ohms for S12 amp Subbass Sub Overla
8. Even low frequency coverage is amongst the toughest issues in sound system design Common issues that are faced in design are as follow 7 GENERAL GUIDELINES FOR SUBWOOFER DESIGN e Low frequency radiation is hard to control efficiently because of wavelength becoming large 10m 30ft at 34 Hz in relation to sources and most of available subwoofers are omnidirectional this results in important low frequency feedback on stage environmental problems in outdoor venues and increased reverberation time in indoor venues e Stereophonic implementation of subwoofers introduces very strong interference patterns these are related to Left and Right path length difference to listener location while pressure levels are comparable for Left and Right arrays while always maximum at the center where distance to Left and Right arrays are equal pressure level can severely drop at locations where path length equals half the wavelength of frequency of interest This effect is well known from audio engineers and often referred to as Power Alley REFLECTING REFLECTING WALL WALL e In closed venues room eigen modes nulls and max are dominant over source location because these f1 C 2L modes depend on accurate characterization of boundary surfaces walls ceiling floor audience coverage is very hard to DISTANCE gt DISTANCE To overcome these difficulties some common sense rules can he
9. 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 Page 28 58 RS15 RIGGING INSTRUCTIONS 6 2 Flying RS15 arrays IMPORTANT Maximum allowed RS15 quantity to be flown is 12 RS15 bumper rigging point must be adjusted so that bumper always remains horizontal RS15 flying system forbids angles between adjacent cabinets IMPORTANT RS15 bumper is designed to be flown from one rigging point only Motor hoist must be rated to support entire cluster weight Required items e 1x Bumper RS15 BUMPER e N Pair of RS15 Rigging Plates RS15 FPLATES for N cabinets e 4xN Quick release pins BLGEOS for N cabinets e 1 hoist not provided 6 2 1 Hoist Rating N being RS15 quantity within cluster cluster weight is given by Welster 17kg 38lbs Nx 70kg 1541bs NB this formula includes cable weight up to 5kg 111bs per RS15 Typical cases are e 3RS15 cluster ton hoist e 6RS15 cluster Y ton hoist e 12RS15 cluster 1 ton hoist 6 2 2 Connecting first RS15 to bumper e Connect bumper to first RS15 flying system link plates ensure quick release pins are properly locked e
10. Erin A eaten a de Et 52 10 5 GEO 512 Analogu cagte cid 53 10 5 1 Pare att cash ee alien or A a rte te se alle ee ere 53 10 5 2 Eront and Rear Panel 53 10 6 NX242 Digital TDController with NX Tension Card 54 10 6 1 54 10 6 2 Front and Rear Panel VieW 20 ee ater ait head eee ated alent 54 107 NXAMP4x1 8 NXAMP4x4 Powered Digital TDControllers 55 10 7 1 EIDA it eeh Ri etal Sed 0 55 10 7 2 Frontand Rear Panel 02a8 SE AL ie doter fade it 56 11 7 11 1 Modules amp Control Electronics List 57 115211 ACCESSONES LIST ist e ied sy apes OS A toa cate Sot ea ada eat od Min forte ane 57 12 USER NOTES eege nara 58 Page 8 58 INTRODUCTION 1 INTRODUCTION Thank you for selecting a NEXO RS15 Subwoofer System This manual is intended to provide you with necessary and useful information about your RS System which includes the following products e RS15 is a Directivity Configurable Subwoofer which comprises two 15 38cm long excursion Neodynium direct radiating drivers mounted in a dual volume vented enclosure with aerodynamic profiled vents its coverage ranges from omnidirectional to highly directional and its frequency response extends from VLF to LF ranges 35Hz 200Hz Painted and Carpeted versions are available e a full range o
11. Insert axis in center hole and secure it with provided R clips e Connect hoist hook to bumper axis and lift assembly so that RS15 is off the ground RS15 RIGGING INSTRUCTIONS Page 29 58 6 2 3 Adjusting rigging point for horizontality Before connecting a second cabinet bumper angle has to be adjusted for perfect horizontality This requires that the rigging point is adjusted in the two horizontal directions so that the bumper remains horizontal within 1 Adding cabinets will reduce this tolerance Adjusting 0 along the cabinet depth Adjusting horizontality along cabinet depth is done by properly selecting bumper hole Top center bumper rigging point centered geometrically Omm RS15 equipped with wheels clusters gravity center of a single RS15 with wheels precisely matches geometrical center RS15 alternate clusters speakers facing alternatively left and right with or without wheels gravity center always matches geometrical center Top center bumper rigging point 17mm ahead of geometrical center RS15 without wheels clusters all speakers facing same direction gravity center of a single RS15 is precisely 17mm ahead of geometrical center Other available rigging point positions Cable weight influence over gravity center position cannot be precisely anticipated Additional rigging point configurations are availa
12. Watts to 2400 Watts 4 Ohms 2 x RS15 2 x 1400 Watts to 2400 Watts 4 Ohms or 2 x 1400 Watts to 2400 Watts 4 Ohms 1 x 2800 Watts to 4800 Watts 2 Ohms 2 x 2800 Watts to 48000 Watts 2 Ohms 2 x 2800 Watts to 4800 Watts 2 Ohms driving both drivers in parallel requires dedicated speaker cable 3 1 1 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 amplifier 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 3 1 2 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
13. Wheel Board Rigging system d Please refer to the user manual before any operation SHIPPING amp ORDERING Packaging RS15s are packaged individually Order RS15 C finished grey carpeting or RS15 P finished in black structured coating 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 RS15 user Manual Usable range data frequency response capability with TD crossover slopes removed RS15 TECHNICAL SPECIFICATIONS Page 47 58 10 2 Dimensions 42 28 1074 mm 10 3 Diagrams 10 3 1 Frequency Response and Impedance dB Level Sound pressure 2 SS 70 10 20 50 100 200 500 1k Frequency Hz OC Response Curve for 2 83Vrms at NX242 input Amplitude log I I E 50 S IN AR 10
14. and SPL output INTRODUCTION Page 3 58 With RAY SUB patent pending technology NEXO is again moving one step forward RAY SUB technology is about optimizing positioning and phase relationship of radiating surfaces in vented enclosures so that acoustic distance from rear to front sections always increases as frequency decreases consequently rear and front section always sum up efficiently typically 5 dB gain from rear section in the forward direction and cancel in the rearward direction Used as a single cabinet RAY SUB Technology allows the same cabinet to be configured for any polar pattern omnidirectional as a standard direct radiating subwoofer when speakers are facing the audience or highly directional when cabinet is rotated speakers sideways or upwards Used in arrays RAY SUB subwoofers can be set back to back front to front in vertical columns and beam steered upwards or downwards provided column length is sufficient NEXO RAY SUB technology brings a never achieved low frequency directional control to the sound reinforcement industry raising one more time NEXO standards P age 4 58 INTRODUCTION SAFETY ISSUES IMPORTANT NOTICE CONCERNING HIGH SOUND PRESSURE LEVELS Exposure to extremely high noise levels may cause a 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 suffic
15. horizontally and all cabinets at 0 Design procedure should be in agreement with what has been described in the preceding section See following section on Steered Arrays 8 2 Directional Mode IMPORTANT RS15 can be installed Left or Right see section 2 1 Left means grid is Left when looking from front Right means grid is right when looking from front Whenever possible NEXO recommends symmetrical designs 8 2 1 Single RS15 Single RS15 have an asymmetrical pattern in the horizontal plane ie speakers on the side which is tilted 30 off axis towards speakers direction vertical pattern ie speakers facing up or down is symmetrical RAY SUBS IMPLEMENTATION Page 37 58 HORIZONTAL COVERAGE IN DIRECTIONAL MODE 100 HZ VERTICAL COVERAGE IN DIRECTIONAL MODE 100 HZ IMPORTANT So that directional behaviour and acoustic load are not altered no reflecting surface should be at less than 50cm 20 from the RS15 side walls and drivers In case of stereo configurations NEXO recommends that speaker side is set outwards to minimize interference region in stereo designs ie RS15s LEFT should be installed Left and RS15s RIGHT should be installed Right 8 2 2 RS15s pair There are three ways of using pairs of RS15s in directional mode alternate back to back and face to face 50cm 20 between grids BACK TO BACK CONFIGURATION ALTERNATE CONFIGURATIO
16. to achieve because 4x RS15 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 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 AMPLIFIER SELECTION FOR USE WITH RS15 Page 17 58 e In 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 o
17. 42 Page 18 58 AMPLIFIER SELECTION FOR USE WITH RS15 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 inserted between the output of GEO S12 TDController or NX242 TDController and the input of loudspeakers through use of DSP modules such as internal amplifier signal processing 3 2 RS15 and NXAMP TDControllers NEXO Powered TDControllers NXAMP 4X1 8 4X4 are integrated solutions for Control and amplification for all NEXO speaker ranges NXAMP4x1 and NXAMP4x4 power capability is listed in the table below 4 Channels Bridge Stereo NXAMP4x1 4 650 Watts 8 Ohms 2 x 1800 Watts 8 Ohms 4 x 900 Watts 4 Ohms 2 x 2600 Watts 4 Ohms 4 x 1300 Watts 2 Ohms NXAMP4x4 4 x 1900 Watts 8 Ohms 2 x 6800 Watts 8 Ohms 4 x 3400 Watts 4 Ohms 2 x 8000 Watts 4 Ohms 4 x 4000 Watts 2 Ohms 3 2 1 NXAMP connectors NXAMP4x1 and NXAMP4x4 rear panels feature e A analog inputs outputs links on XLR3 connectors e A digital inputs outputs on RJ45 connectors with optional card e 4 speaker level outputs on NL4FC connectors Figure below shows connectors implementation on the rear panel Jm CC sm ui O rm Maa pp saca ll du cc 3 2 2 RS15 and NXAMP recommended configurations OMNI MODE DIRECTIONAL MODE
18. 5 1 RS15 with GEOS12 TDController Mono Omni Mode FROM AMPLIFIERS CAUTION eu TO AMPLIFIERS SEE USERMANUAL BALANC ED OUT PUTS BALANC ED IN PUTS SENSE IN PUT from amp terminals STEREO IN Speakon 4 1 1 VLF 2 2 N C O m oQQueea 1 1 VLF1 2 2 VLF2 VLF1 and VLF2 on one amplifier channel AMPLIFIER 2 Speakon 4 Speakon 4 Speakon 4 1 1 N C Speakon 4 2 2 FULL RANGE CONNECTION DIAGRAMS Page 21 58 5 2 RS15 with NX242 ES4 TD Controller Stereo Omni Mode FROM AMPLIFIERS ee 0000 TO AMPLIFIERS N C N C OUT OUT IN RIGHT IN LEFT 2 RIGHT LEFT E 5 STEREO LEFT 2 OCA e e STEREO ypy A RIGHT SP4 SP4 SP4 Page 22 58 CONNECTION DIAGRAMS 5 3 R 515 with NX242 ES4 TD Controller Stereo Directional Mode FROM AMPLIFIERS TO AMPLIFIERS O Q OUT OUT OUT OUT RIGHT RIGHT LEFT LEFT FRONT REAR FRONT REAR IN RIGHT IN LEFT CONNECTION DIAGRAMS Page 23 58 5 4 RS15 with NXAMP Stereo Omni Mode INB INA P age 24
19. 58 CONNECTION DIAGRAMS 5 5 RS15 with NXAMP Stereo Directional Mode OU al o H INB INA RS15 RIGGING INSTRUCTIONS Page 25 58 6 RS15 RIGGING INSTRUCTIONS Before proceeding with assembly of RS15 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 RS15 rigging system requires three experienced persons for set up typically one motor hoist operator and one RS15 operator per side of the array Good synchronisation and crosscheck between the operators are key elements for a reliable and safe set up 6 1 SAFETY FIRST RS15 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 RS15 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 RS15 RAYSUB systems References in this manual to other rigging equipment such as motor hoists steels shackles etc are made to clarify the description of RS15 procedures The user must ensure that operators are properly trained by other agencies in the use of these items The RS15 Rigging System has been optimised for the depl
20. E Page 42 58 RAY SUBS IMPLEMENTATION 8 4 2 Precautions It is 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 NX TDControllers 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 RS15s are driven form an AUX output NX TDController 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 GEO S12 array and RS15s lt is then mandatory to use proper measurement tool to optimize phase response IMPORTANT Before using different outputs of a mixing desk ensure that MAIN and SUB outputs are in phase Never add additional low pass filtering on the SUB output or high pass filtering on the MAIN output Always apply identical proces
21. N FACE TO FACE CONFIGURATION All of these configurations have symmetrical patterns with a smooth 15dB attenuation at the rear over the entire RS15 bandwidth but significantly different horizontal coverage back to back configuration has a 3dB coverage which decreases from 120 at 31 5 Hz to 60 at 100Hz alternate configuration has a constant 3dB coverage of 120 from 31 5Hz to 100Hz face to face configuration has a 3 dB coverage which increases from 120 at 31 5 Hz to 180 at 100 Hz Detailed coverage information on these configurations is available in section 9 3 2 of this manual Page 38 58 RAY SUBS IMPLEMENTATION BACK TO BACK CONFIGURATION AT 100 HZ ALTERNATE CONFIGURATION AT 100 HZ FACE TO FACE CONFIGURATION AT 100 HZ RAY SUBS IMPLEMENTATION Page 39 58 8 2 3 RS15s arrays IMPORTANT RS15s arrays must be installed with bumper set horizontally and all cabinets at 0 Flying RS15s columns can significantly improve low frequency coverage in the vertical plane and therefore over audience depth provided height is sufficient A 12 RS15 cluster flown at 10m 30ft will provide a 3dB pressure level deviation at 100Hz over an audience area 75m 200ft deep while maintaining 15 to 20dB attenuation on stage see figure below 12 RS15 ALTERNATE CLUSTER OVER 75M 200FT 8 3 Steered RS15s arrays 8 3 1 Steering technique RS15s arrays must be flown vertically with b
22. NEXO RS Ray Sub Series RS15 Subwoofer SN L gt User Manual Page 2 58 INTRODUCTION GOING ONE STEP FURTHER IN LOW FREQUENCY CONTROL RAY SUB TECHNOLOGY Radiation control of low frequencies is hard to achieve due to wavelength being larger than cabinet size Consequently most of current subwoofers available on the audio professional market are omnidirectional Drawbacks in using omnidirectional subwoofers are known by experienced engineers Low Frequency sound pressure level is typically higher on stage than over the audience high pass filters are mandatory in almost all microphones inputs to avoid feedback from the microphones to the subwoofers Moreover gain from microphone to speakers is highly limited due to that feedback reinforcing a double bass can be an enormous challenge Indoor environments typically have much higher reverberation time in the Low Frequency range than in the mid and high Frequencies This characteristic is emphasized by the omnidirectional pattern of conventional subwoofers all sound engineers experienced kick drum lasting forever Many outdoor shows occur nearby residential areas where noise constraints are very restrictive in such cases low frequencies levels over the audience have to be limited so that environment criterias are fulfilled possibly leading to unacceptable wideband limitations Gradient subwoofers provide an elegant solution to the above issues based on a technology
23. X Over 1 RS15 cardio 35Hz 90Hz 2 x PS10 X Over PS15 2 x RS15 omni 35Hz 90Hz 2 PS15 Passive Wideband 1 515 cardio 35Hz 90Hz 2 x PS15 Passive Wideband 2 x RS15 omni 35Hz 90Hz 2 x PS15 Passive X Over 1 XRS15 cardio 35Hz 90Hz 2 x PS15 Passive X Over GEO S830 2 RS15 omni 35Hz 90Hz 2 S830 Wideband 1 x RS15 cardio 35Hz 90Hz 2 x S830 Wideband 2 RS15 omni 35Hz 90Hz 2 S830 X Over 1x RS15 cardio 35Hz 90Hz 2 x S830 X Over GEO S805 2 RS15 omni 35Hz 90Hz 2 S805 Wideband 1 x RS15 cardio 35Hz 90Hz 2 x S805 Wideband 2 RS15 omni 35Hz 90Hz 2 S805 X Over 1x RS15 cardio 35Hz 90Hz 2 x S805 X Over GEO 1230 2 RS15 omni 35Hz 90Hz 2 x S1230 Passive Wideband 1 RS15 cardio 35Hz 90Hz 2 51230 Passive Wideband 1 RS15 cardio 35Hz 90Hz 1 x S1230 Active Wideband 2 RS15 omni 35Hz 90Hz 2 x S1230 Passive X Over 1 RS15 cardio 35Hz 90Hz 2 x S1230 Passive X Over 1 RS15 cardio 35Hz 90Hz 1 x 51230 Active X Over GEO 1210 2 RS15 omni 35Hz 90Hz 2 x S1210 Passive Wideband 1 RS15 cardio 35Hz 90Hz 2 51210 Passive Wideband 1x RS15 cardio 35Hz 90Hz 1 x 51210 Active Wideband 2 RS15 omni 35Hz 90Hz 2 x S1210 Passive X Over 1 RS15 cardio 35Hz 90Hz 2 x 51210 Passive X Over 1 RS15 cardio 35Hz 90Hz 1 x 51210 Active X Over Page 20 58 CONNECTION DIAGRAMS 5 CONNECTION DIAGRAMS
24. ain 2 Power 2 Gain Delay Gain 4 All channels 26 dB refer to amp 0 dB 0 ms 0 dB 0 5 bars 1 Local gain and delay values are inter locked on channel 1 amp 2 and 3 amp 4 in Directional Mode 2 values for recommended amplifier gain and power should be set in agreement with selected amplifiers specifications 3 Should be in agreement with implemented cluster acts on a shelving filter designed to compensate for LF coupling 4 Disabled when using digital inputs 9 2 Are the amplifiers properly configured Gain Switch High Pass All channels Stereo 26 dB None None 9 3 Are the amps and the NX properly connected Check that the sense lines on the NX s are properly connected by applying a signal to the corresponding output and verify that the correct Sense LED illuminates 9 4 Are the speakers properly connected e Attach the first serie of modules to the bumper e Before flying verify that all drivers of all modules are functioning properly e Make sure that each RS15 driver is producing proper summation in omni mode The two RS15 individual 15 driver should sum up by 6 dB Doubling RS15 quantity 2 4 and so on should also produce 6 dB gain e Make sure that each RS15 is producing the proper front rear summation in directional mode RS15 SYSTEM CHECK LIST Page 45 58 when listening from behind the system switch the front drivers in and out You should hear a reduction in the LF range when the both
25. ble so that the RS15 bumper is always set horizontally These rigging point positions are 34mm behind geometrical center 17mm behind geometrical center requires flipping the bumper horizontally 34mm ahead geometrical center requires flipping the bumper horizontally Page 30 58 RS15 RIGGING INSTRUCTIONS Adjusting 0 along the cabinet width Adjusting horizontality along cabinet depth is done by properly adjusting the bumper axis as described in drawings below Do not forget to secure the axis with R clips once horizontality is achieved Assembly is now ready for second RS15 connection 6 2 4 Flying the second RS15 e Lift assembly to sufficient height in order to connect a second RS15 e Connect second RS15 to first RS15 flying system link plates ensure quick release pins are properly locked OMNI MODE DIRECTIONAL MODE ALTERNATE DIRECTIONAL MODE BACK TO BACK DIRECTIONAL MODE FACE TO FACE RS15 RIGGING INSTRUCTIONS Page 31 58 6 2 5 Flying subsequent RS15 s e Repeat above steps for subsequent RS15 s e Lift cluster defined rigging height secure cluster horizontally to prevent it from rotating IMPORTANT Do not attempt to make any change to the bumper rigging point once the cluster is lifted e Secure bumper with secondary saf
26. cabinets to be set for passive or active wideband or cross over cross over points omni or directional modes Peak limiters fitted for both selected speaker and amplifier Acceleration protection preventing membrane stress Displacement protection preventing over excursion Temperature protection preventing voice coil damage Inter channel regulation Delay Up to 150m 330ft in 10cm 4 steps Input Patching Allows any of the inputs to be routed to any output Output Gain Global and individual channel gain 6dB in 0 5dB steps Volume Control Global and individual channel gain inf to OdB in 16 variable steps Save Recall Stores up to 40 user setups On the Fly recalls Array EQ LF or HF shelving filters to compensate for arrays quantity dependent behaviour Security Mode Remote Control Green Status Password protected for Read Only or Remote Only modes Full Remote Control via Ethersound Digital Network Protocole and ESMonitor software ROHS WEEE Certification UL SEMKO CE CCC KOREA TSS PSE RS15 PARTS amp ACCESSORIES LIST Page 57 58 11 RS15 PARTS ACCESSORIES LIST 11 1 Modules amp Control Electronics List OD DRA ss 0 gt NS RS15 RS15 Subwoofer N GEOS12TD KL Analogue GEOS12 TDCo
27. ctronically by implementing a delay that increase from the centre to the sides which creates a symmetrical pattern front to rear In both cases omnidirectional subwoofers should be avoided so low frequency that level on stage does not exceed level in the audience CURVED SUBWOOFER ARRAY ACROSS STAGE STRAIGHT DELAYED SUBWOOFER ARRAY ACROSS STAGE GENERAL GUIDELINES FOR SUBWOOFER DESIGN Page 35 58 Main drawback of monophonic designs as the ones described above is inconsistent phase relationship between subwoofer arrays and main systems over the audience area lack of impact in the 80Hz 125Hz bandwidth 7 4 Stereo Design If stereophonic implementation has to be maintained then Left and Right array coverage patterns have to be as independent as possible ie coverage overlap from Left to Right has to be minimized When using few cabinets minimizing overlap can only be achieved with directional devices by rotating the subwoofers 30 to 45 outwards rotating an omnidirectional subwoofer makes no difference in the coverage pattern When using a larger amount of cabinets Left and Right subwoofers arrays must be designed so that level drops as much as possible inwards and is maintained as going outwards Therefore main axis efficiency must be orientated outwards through use of delays or curving the array outward as in below figure Such arrays must be experimented playing one side only to check if above condition is fulfilled and
28. d Menu B buttons 16 characters by 2 lines display Select Wheel amp Enter button 4 IN Clip DSP Clip red LED s Speaker Protection yellow 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 8 Weight 1U 19 Rack 230 mm 9 Depth 4kg 10 6 2 Front and Rear Panel view RS15 TECHNICAL SPECIFICATIONS Page 55 58 10 7 NXAMP4x1 amp NXAMP4x4 Powered Digital TDControllers 10 7 1 Specifications SPECIFICATIONS NXAMP4x1 NXAMP4x4 Number of Amplifier Channels 4 channels 2 by 2 bridgeable 4 channels 2 by 2 bridgeable Max Output Voltage no load 4 x 105 V 4 x 200 V Max Output Power 8Q 4 x 600 W 4 x 1900 W Max Output Power 40 4 x 900 W 4 x 3300 W Max Output Power 2Q 4 x 1300 W 4 x 4000 W Power Consumption Standby 10 W 20 W Power Consumption Idle 100 W 150 W Power Consumption 1 8 Power 1100 W 3000 W Analog Input Channels 4 channels In Out Frequency Response 0 5dB from 10 Hz to 20 kHz Input Impedance 20 kQ Max Input Level 28 dBu Dynamic Ra
29. e to skids ie at the top of the cabinet Position handles according to below drawing vertical opening must be aligned with connector panel or owner s plate Insert the four washers and screws provided with the RS15 FLPLATES kit and tight them torque value must be 10 Nm minimum P age 12 58 RS15 GENERAL INSTRUCTIONS _Holes to be filled with Loctite 243 Link Bars going upwards opposite to skids Vertical Openings opposite to loudspeakers 2 2 3 RS15 Wheels Tools HEXE 13 Remove the four screws on RS15 back panel Fill each screw hole with Loctite 243 or equivalent Position wheels according to below drawing Insert the 8 washers and 4 screws provided with the RS15 WHEEL kit see detail in below drawing and tight them RS15 GENERAL INSTRUCTIONS Page 13 58 2 2 4 RS15 Dolly IMPORTANT 1 TRANSPORTING RS15 ON DOLLY REQUIRES THAT FLYING PLATES ARE INSTALLED ON ALL CABINETS SO THAT RS15 S CAN BE SECURED TOGETHER 2 RS15 DOLLY IS DESIGNED FOR UP TO 3 RS15 S AND BUMPER NEVER EXCEED THESE QUANTITIES e The first RS15 must be locked to the RS15 dolly using four push pins according to below drawing e Subsequent RS15s are stacked on top using four push pins per additional cabinet to secure the assembly e Bumper is to be attached to the top cabinet
30. ety steel IMPORTANT The requirements for secondary safety systems vary with territories However the secondary safety steel MUST have a SWL equivalent or greater than that of the rigging system OO Page 32 58 RS15 RIGGING INSTRUCTIONS 6 3 Testing and Maintenance of the RS15 flying system e General please keep regular maintenance attention to the RS15 flying system in order to provide 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 RS15 cabinets primary concerns are the grid screws attaching the grid to the cabinet the screws attaching the connecting plates to the cabinet e 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 finishing of the cabinet e After cleaning the rigging system must be treated with a suitable lubricant to prevent rusting NEXO recommends the use of Scottoil FS365 or equivalent which is a water based lubricant with a mixture of machine oil surfactant and anti rust treatment GENERAL GUIDELINES FOR SUBWOOFER DESIGN Page 33 58 7 1 Low Frequency Issues
31. ey should all be RS15 RIGHT so that skids are opposite to pole stand hole Tools TORX 25 and ALLEN key 6mm 2 1 1 RS15 LEFT Mounting skids on the pole stand hole side defines a RS15 LEFT In such a case front grid must be removed flipped over and reinstalled so that NEXO logo appears on the same side than the skids CONFIGURING RS15 AS LEFT 2 1 2 RS15 RIGHT Mounting skids opposite to the pole stand hole side defines a RS15 RIGHT CONFIGURING RS15 AS RIGHT RS15 GENERAL INSTRUCTIONS Page 11 58 2 2 Mounting Optional Accessories IMPORTANT IN ORDER TO PREVENT SCREWS FROM GETTING LOOSE USE BLOCKING LIQUID LOCTITE 243 OR EQUIVALENT FOR ALL SCREWS USED WITH RS15 ACCESSORIES 2 2 1 RS15 Handles Tools TORX 50 Remove the four screws on each side of RS15 Fill each screw hole with Loctite 243 or equivalent Position spacers and handles according to below drawing vertical opening must be aligned with connector panel or owner s plate Insert the four washers and screws provided with the RS15 HANDLES kit and tight them INSTALLING RS15 HANDLES IMPORTANT RS15 handles must not be used to fly RS15 s through illegal use of straps for example 2 2 2 RS15 Flying Plates with handles touring applications IMPORTANT Tools TORX 50 Remove the four screws on each side of RS15 Fill each screw hole with Loctite 243 or equivalent Position flying bars so that articulated link bars are opposit
32. f accessories that provides safe flexible and simple means of transporting and installing RS15 subwoofers in fixed installation as well as in touring applications These include flying hardware and dolly INTRODUCTION Page 9 58 Nu gt il foo IMPORTANT Seet As for all NEXO systems the RS15 is controlled powered and monitored by dedicated NEXO TDControllers GEO 12 TDController is based on PS analogue TDController design and provides full control for RS15 in omnidirectional mode associated to Geo 12 It has 2 analogue inputs Left and Right and 3 analogue outputs RS15 Mono Omni GeoS12 Left and GeoS12 Right NX242 ES4 Digital TDController provides comprehensive control of RS15 loudspeakers in multiple configurations It allows Ethersound digital audio networking as well as remote control for all units in the network It has 2 analogue 4 digital inputs and 4 analogue 4 digital outputs NX242 must be equipped with NX Tension Card ESA or CAI to access RS15 setu
33. front and rear drivers are on as compared to when the rear drivers only are on When listening from the front you should hear a strong increase in the LF range when connecting the rear drivers e Raise the bumper attach the next series of modules and repeat the above checks e Make sure that these series of modules sum properly with the modules above them 9 5 Final Pre Sound Check Check e Play a CD track preferably generous and periodic in the LF content on the SUB output mono left mono right and then both sides both sides must sound strictly identical when listening at the center level must not decrease at the center when playing left and right simultaneously as opposed to one side only e Play the same CD track on the MAIN system on the SUB system then on both Inverting polarity on one of these outputs MAIN or SUB should always result in a massive difference near the crossover point Page 46 58 RS15 TECHNICAL SPECIFICATIONS 10 RS15 TECHNICAL SPECIFICATIONS 10 1 System specifications RS15 PRODUCT FEATURES 2 x 15 38cm long excursion neodynium BO drivers Height x Width x Depth 454 x 564 x 1074mm 17 9 x 22 2 x 42 3 without accessories Weight Net Weight without accessories 52Kg 115 Ibs Construction Baltic Birch ply finish with structured black coating Dark grey carpet finish also available RS15 with NX242 ES4 TDcontroller or NXAMP SYSTEM SPECIFICATION Direc
34. ient 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 Y 110 Ya 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 a permanent hearing loss if exposure is in excess of the limits as set forth above To ensure against potentially dangerous exposure to high sound pressure levels it is recommended that all persons exposed to equipment capable of producing high sound pressure levels such as this amplification system be protected by hearing protectors while this unit is in operation SYSTEM RIGGING SAFETY RULES Before use of RS Subwoofers please ensure that anyone involved in system deployment understands the rigging and stacking Safety rules as described in the RS15 HARDWARE SAFETY FIRST section Failure to do this exposes people to potential injury or death ELECTRICAL SAFETY WARNING GEO 12 TDCONTROLLER 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 installat
35. ion 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 INTRODUCTION Page 5 58 TABLE OF CONTENTS 1 INTO UICN id 8 2 RS15 General InStrUCtONS iii aa ee paa eaer aE a 0 22 10 2 RS15 Left and RSIS Right 10 2 1 1 A 10 2 1 2 RSIS RIGA TM 0 des Nan 10 2 2 Mounting Optional Accessories is 11 2 2 1 RS15 ET 11 2 2 2 RS15 Flying Plates with handles touring applications 11 2 2 3 REAA EE sr staked sera S nn E Ee dege 12 2 2 4 RSIS Re ek re SO Se A SN RO SSM Ee a e lo AE o 13 2 3 0 14 2 3 1 Configuring Connector and Owner plates ss 14 2 3 2 RS15 Connectors mini A a een ees Madde Re ste dessin 14 2 3 3 15 2 3 4 Example A eee ee eee 15 3 Amplifier selection for use With 16 3 1 RS15 recommended amplification see 16 3 1 1 Current 16 3 1 2 Amplifier Settings 16 3 2 18 3 2 1 NXAMP CONNGECHOMS issue nettes fees Rennes utile Rabelais ses Hades ade diosas illa 18 3 2 2 RS15 and NXAMP recommended Configurations coonoccccnnnnccccnnocnccconcnnnncnananc nc nnno nan r narran 18 4 RS15 Setups on NEXO TD Controllers 9 0 19 4 1 Analogue 0 19 4 2 Digital NX242 ES4 and NXAMP TDConitrollers oooonoocccononiccnnnocicccononcccnononccrcnanoncnn cano nc nn cano rca rrnnn rca 19 5 Connection 3 20 5 1 RS15 with GEOS12 TDCo
36. lp Page 34 58 GENERAL GUIDELINES FOR SUBWOOFER DESIGN 7 2 Gradient Subwoofers benefits Gradient subwoofers can provide up to 15 dB front to rear average attenuation Please refer to Ray Sub technical note for in detail explanation on gradient subwoofers Low frequency level on stage is therefore significantly reduced on stage and in the neighbouring environment in open air venues Because of their directional pattern Gradient subwoofer are also less sensitive to room eigen modes 7 3 Monophonic Design Left and Right subwoofer arrays can be merged into a monophonic system so that interferences no longer exist When using few cabinets this can be done by installing these cabinets at the centre front stage If cabinets are set on the ground in front of the stage level discrepancy from first to last rows will be important Flying cabinets above centre stage will reduce first to last rows discrepancies significantly gt gt gt CENTRE STACKED DIRECTIONAL SUBWOOFER CENTRE FLOWN DIRECTIONAL SUBWOOFER When using a larger amount of cabinets these can then be installed all across the stage provided distance between units does not exceed half the wavelength of the upper frequency limit 1 7m 5 6ft at 100 Hz Array coverage can then be adjusted geometrically by curving the array horizontally so that it matches the audience area which creates an asymmetrical front stage to rear stage pattern with a hot point on stage or ele
37. nge 105 dB unweighted Audio Inputs Connectors THD Noise Typical 0 1 flat setup Latency Time 500us on flat setup FEATURES 4 balanced analogue inputs on XLR3F links on XLR 4 digital inputs via optional Ethersound Card Speaker Outputs Connectors 4 Speakon outputs with internal power relays for automatic output assignment RS232 Port Allows firmware upgrade for software improvement and new speakers setups GPIO Port 5 Global Purpose Inputs and 8 Global Purpose Outputs software assigned DSP Processing Two DSP s 24bits 48bit accumulator 7OOMIPS Front Panel On off Mains switch Select Wheel Menu A and Menu B buttons 40x2 characters display amp protect stand by and power LED s volume indicators 15 LED s Mute buttons and red LED output current signal green LED Speaker protection yellow LED amp peak red LED Rear Panel 1 NXAMP4x1 or 2 NXAMP4x4 mains sockets RS232 serial communication connector GPIO port expansion slot for digital audio network extension card 4 XLR inputs 4 XLR links 4 Speakon NL4 Power Supply Dedicated versions for 100 120 V or 220 240 V Dimensions amp Weight System Selection NXAMP4x1 3U 19 Rack 457mm 18 Depth 16 5kg 33lbs net NXAMP4x4 4U 19 Rack 457mm 18 Depth 24 5kg 49lbs net NXAMP USER CONTROLS Allows control across all NEXO range System Setup Protections factory defined Within selected range allows
38. ntroller Mono Omni Mode 20 5 2 RS15 with NX242 ES4 TD Controller Stereo Omni Mode 21 5 3 RS15 with NX242 ES4 TD Controller Stereo Directional Mode 22 5 4 RS15 with NXAMP Stereo Omni Mode is 23 5 5 RS15 with NXAMP Stereo Directional Mode 24 Page 6 58 INTRODUCTION Rigging Te TEE 25 1 SAFETY FIRST inner erh id ee ee 25 6 1 Flown Systems este tiesa 25 6 1 1 Ground Stacking Safety stress manne smash ds ee eee inst 26 6 1 2 27 7 6 1 3 Flying RSTS SA tnt Pr a M Le ct ot nt 28 6 2 Holst RAUN iniciacion 28 6 2 1 Connecting first RS15 to DUMPED sien 28 6 2 2 Adjusting rigging point for horizontal 29 6 2 3 Flying the second Rai A eee eh dE ae 30 6 2 4 Elving Subs quent E 31 6 2 5 Testing and Maintenance of the RS15 flying system 32 6 3 General guidelines for subwoofer design sens 33 7 Low Frequency ISSUSS rime nine Gee it daa 33 7 1 34 2 5 244 502 Gradient Subwoofers benefis 7 2 34 Monophonic 7 3 EE 35 74 36 RAY SUBS 8 AEEA AAE AEAEE RAAA 36 Omnidirectional Mode 8 1 Single RS 1 a i eta ee dE ys dee 36 8 1 1 ERIC 36 8 1 2 Directional Moes Zenger nee ai eee td dude ie Bg di 36 8 2 SIMNGIGHRS RER PE dida 36 8 2 1 37 RS 19S AIDE 8 2 2 He eee a dra e echale Lado Seatac ds 39 8 2 3 39 7 Steered 8 3 Steering 00 oie Manes naa aisle en dike Eee see naka 39 8 3 1 Delay values implementati
39. ntroller NX242ES4 CE GALL w i Digital TDController with NXtension Card NXAMP4x1 6 9 E Power Digital TDController 4x1300W 2Q Ea 8886 DI lt ae NXAMP4x4 Power Digital TDController 4x4000W 2Q Mh 11 2 Accessories List MODEL DRAWING DESCRIPTION 62 gt Main RS15 Bumper d UA 7 Rigging plate with handles pair A Handles pair d 2 Wheels on wood skids pair RS15 DOLLY gt 5515 Dolly 3 4515 max BLGEOS Quick Release Pin for Geo 58 GeoS12 5 Page 58 58 USER NOTES 12 USER NOTES France Nexo S A Parc d Activit de la Dame Jeanne F 60128 PLAILLY Tel 33 3 44 99 00 70 Fax 33 3 44 99 00 30 E mail info nexo fr www nexo sa com
40. ocedures and never attempt to build stacks without sufficient personnel and equipment e 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 e Apply the same attention to all safety matters when de stacking systems e Be aware that safety procedures are as important in the truck and in the warehouse as they are at the venue RS15 RIGGING INSTRUCTIONS Page 27 58 IMPORTANT 515 Accessories are specifically rated in agreement with structural computations Never use other accessories including push pins when assembling RS15 cabinets than the ones provided by NEXO NEXO will decline responsibility over the entire RS15 accessory range if any component is purchased from a different supplier 6 1 3 Contacts Correct training is fundamental to safe practise when working with loudspeaker flying systems NEXO recommend that users contact local industry associations for information on specialist courses 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
41. on sise 40 8 3 2 El E A med Ne Rent nhac ere res entends 41 8 3 3 Aligning RS15s with main system sise 41 8 4 NEXO systems acoustic reference point 41 8 4 1 42 8 4 2 Alignment with distance measurement 42 8 4 3 Alignment with phase measurement ss 43 8 4 4 8 5 Recommended installation tools and equipment 111114 43 INTRODUCTION Page 7 58 H ASIS System Check Liette Eege SEENEN a Eege 44 9 1 Are the NX Digital TDcontrollers properly configured 00 0 ceeeteeteeeee eee eeeeeeeeeeeeeeeeteeeaeeeeeeaeeeteeenaes 44 9 1 1 NA o o AA td nu Ste tenet tit eer tet 44 9 2 Are the amplifiers properly Configured ss 44 9 3 Are the amps and the NX properly Connected enntre nn nnmnnn eenen 44 9 4 Are the speakers properly connected si 44 9 5 Final Pre Sound Check Check ses 45 10 46 TOTS ysteMiSpecifiCatiONS iii dada dices een 46 102 DIMENSIONS ii A ee ana eee AA 47 103 0 eee 27 10 3 1 Frequency Response and Impedance 7 47 10 3 2 Polar 48 10 4 RSTS Accessories x nuire Ae Gi ae ca a ania eo et nee 50 10 4 1 RS15 BUMPER cu A alten AAA 50 10 4 2 E e EM DEE 50 10 4 3 Sects ane tt dt 50 10 4 4 RSIS WHEELS in Bd led A ai 51 10 4 5 RSI SsDOLLEY EE 52 10 4 6 RS15 Push Pins BEGEOS
42. oyment of vertical arrays of RS15 loudspeakers No angle adjustment is allowed between cabinets The RS15 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 RS15 Rigging System and provided with suitable safety equipment should deploy RAYSUB Arrays Misuse of the RS15 Rigging System could lead to dangerous consequences Used and maintained correctly the RS15 Rigging System will give many years of reliable service in portable systems Please take the time to read and understand this manual 6 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 Read this manual carefully Also be familiar with the manuals and safe working procedures for any ancillary equipment that will be used with the RS15 Rigging System 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 RS15 system always wear protective headwear footwear and eye protection e Do not allow inexperienced persons to handle a RS15 system In
43. p Crossover switch amp Sub Gain Control 6dB Indicators LF speakers Protect Yellow LED s Temp amp Disp Power ON green Amp Sense amp Peak LED s green Red Dimensions 1U 19 Rack 165mm 6 5 Depth Weight 2 9 kg 6 6 Ibs net SYSTEM OPERATION The 512 TDcontroller is precisely matched to the 512 8 associated Subbass and includes sophisticated protection systems Use of either product without a properly connected Controller will result in poor sound quality and may damage the components SubBass Active two way operation of the S12 Loudspeaker with the associated Subwoofer is included in the Analogue 512 TDcontroller 10 5 2 Front and Rear Panel view 6 Page 54 58 RS15 TECHNICAL SPECIFICATIONS 10 6 NX242 Digital TDController with NX Tension Card 10 6 1 Specifications SPECIFICATIONS 28 dBu Max into 600 Ohm load PRODUCT 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 NX ES4 Card enabled for compatible amplifiers only 24 bit data with 48 bit accumulator 200 MIPS Front Panel Menu A an
44. ps NXAMP4x1 and NXAMP 4x4 are Powered Digital Controllers providing full control and amplification for RS15 in multiple configurations Both devices feature 4 analogue inputs and 4 speaker outputs When equipped with optional card 4 digital inputs in Ethersound digital audio network format as well as remote control for all units in the network become available For a complete description of these controllers please refer to User Manuals The NX242 and NXAMP DSP algorithms and parameters are fixed in software and updated regularly Please consult the NEXO web site www nexo fr for the latest software releases Please devote your time and attention to reading this manual A comprehensive understanding of RS15 specific features will help you to operate your system at its full potential GeoD Passive mode EE SE Page 10 58 RS15 GENERAL INSTRUCTIONS 2 RS15 GENERAL INSTRUCTIONS 2 1 RS15 Left and RS15 Right NEXO RS15 Subwoofer is delivered with a pair of skids to be mounted on the cabinet NEXO recommends to create pairs of RS15 LEFT and RS15 RIGHT for optimized flexibility Benefits of such recommendation are related to directional use in array configurations where RS15s are to be positioned back to back face to face or in vertical columns alternating speaker side However users might prefer to have all RS15s configured identically in which case th
45. rs driven independently is 12 meters IMPORTANT Long speaker cables induce capacitive effects up to hundreds of pF depending on the quality of the cable with a high pass effect on high frequencies If long speaker cables must be used ensure that they do not remain coiled while in use Page 16 58 AMPLIFIER SELECTION FOR USE WITH RS15 3 AMPLIFIER SELECTION FOR USE WITH RS15 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 3 1 RS15 recommended amplification RS15 is rated for very high power handling and has a 2x8 Ohms nominal impedance These impedance valuse allow connection of up to 4 cabinets in parallel for each amplifier channel Nexo recommends amplifiers in agreement with table below DIRECTIONAL MODE OMNI MODE Recommended Amplifier 1x 5 2 x 700 Watts to 1200 Watts 8 Ohms or 2 x 700 to 1200 Watts 8 Ohms 1 x 1400
46. rsion 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 Easera Systune Spectralab or WinMLS 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 dividends in increased performance of the system Page 44 58 RS15 SYSTEM CHECK LIST 9 RS15 SYSTEM CHECK LIST It is essential to execute all these check steps prior to 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 9 1 Are the NX Digital TDcontrollers properly configured IMPORTANT If you must change any of the parameters listed below make sure that you use the same values on all NX s 9 1 1 NX settings Output Assignment NX Setup NXChannel 1 2 3 4 RS15 4 Channels Omni Mode RS15 1 RS15 2 RS15 3 RS15 4 RS15 Stereo Directional Mode RS15 Rear Left RS15 Front Left RS15 Rear Right RS15 Front Right Output parameters Output Amp Amp Global Global Sense Array EQ Headrom Label G
47. sing EQ etc on both outputs so that the phase relationship between MAIN and SUB is not altered 8 4 3 Alignment with distance measurement The fastest way to align RS15 arrays to a main system is simply to measure distance difference from listening point to RS15 and main system reference points r being the distance from GEO 512 array to listener position and r being the distance from RS15 to listener position the distance difference is then r r specified meters or feet e 1 gt the delay should be set on the RS15 TDcontroller channel e 1 lt r the delay should be set on the GEO S12 TDcontroller channel e At F r gt C gives conversion from distance to delay r r in meters C 343 m s NEXO recommends that main system and subwoofer systems are adjusted so that arrivals from RS15 and PS GEOS are coincident at a fairly distant listening position mixing position or further Because of proper acoustic reference point definition in NEXO TDControllers DSP setups this method is highly reliable Mixing position or further RAY SUBS IMPLEMENTATION Page 43 58 8 4 8 5 4 Alignment with phase measurement Phase measurement with real time FFT analyzer can also provide reliable measurements provided measurement microphone is set on the ground to avoid floor interference in the reading floor is perfectly rigid concrete measurement microphone is set far from any walls ceiling or inside angles corners
48. stallation personnel should be trained in loudspeaker flying techniques and should be fully conversant with this manual e 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 e Ensure that the public and personnel are not allowed to pass beneath the system during the installation process The work area should be isolated from public access e Never leave the system unattended during the installation process e 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 system is flown and is likely to cause injury Page 26 58 RS15 RIGGING INSTRUCTIONS e 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 e Ensure that the system is secure and prevented from pivoting around the motor hoist e Avoid any form of excessive dynamic loading to the assembly structural computations on RS15 Rigging System are based on a 1 1 2 factor for hoist or motor acceleration e NEVER attach any item to the RS15 system other than the RS15 accessories e When flying outdoor systems ensure that the system is not exposed to excessive wind or snow loads and is protected from rainfall e The RS15 Rigging S
49. stereo operation Typically only channel 1 input is active Positive and negative output connections vary depending on amplifier manufacturers e 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 fact that current capability is doubled Typically only channel 1 input is active e NEXO does not recommend Parallel Mono Mode for RS15 amplification Warning on amplifiers signal processing features Some high end amplifiers may include signal processing functions similar to those found in the NX242 TDcontroller or in GEO 512 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 NX2
50. that is a simple transposition to sound sources of what has been applied for decades in microphones radiated field derives from pressure differences generated from two or more sources Rear radiation is lowered by more than 12 dB which benefits to stage as well as to neighbours Direct to reverberant ratio is increased by nearly 6 dB in the low frequency range which potentially gives back a kick drum its original punch However there are efficiency limitations gain in lower bandwidth is reduced when sources become too close in relation to wavelength and pattern control is limited in upper bandwidth when both sources interfere destructively in the radiation axis Operating bandwidth were efficiency combines with pattern control is around 2 octaves Poor correlation between cabinet design and targeted specifications leads to two and eventually more drivers in directional mode producing less energy than one driver in omnidirectional mode which is not acceptable for simple practical aspects such as weight and volume It is now 5 years that NEXO has released its first gradient subwoofer the CD12 complemented since then with the CD18 and the GEO SUB These have been quickly adopted worldwide as standards and are considered today as state of the art subwoofers This success is a consequence of proper cabinet design and optimized definition of phase relations through sophisticated DSP algorithms leading to high directional control
51. then summed left and right for interference evaluation see below drawings Although pressure level will still drop in the centre vicinity overall level in the audience area is comparable to what occurs at the centre Curved Sub Array Steered Sub Array LEFT IMPLEMENTATION MINIMIZING RIGHT COVERAGE LEFT AND RIGHT SUM Advantage of stereo design as oppose to mono design is much improved phase relationship between subwoofer arrays and main systems since distance between them is greatly reduced However it is essential to keep in mind that stereo subwoofer array design always leads to strong interferences in the centre alley vicinity a couple of steps left and right of mixing position A successful design requires minimizing the audience area over which these interferences occur and therefore lots of on site experimentation Page 36 58 RAY SUBS IMPLEMENTATION 8 RAY SUBS IMPLEMENTATION 8 1 Omnidirectional Mode 8 1 1 Single RS15 Omnidirectional Mode implementation should be favoured in configurations where sufficient depth is not available for directional implementation proscenium front stage etc strong rear radiation is not critical Although wide in both cases coverage is slightly narrower along RS15 s width than height see drawings below HORIZONTAL COVERAGE IN OMNI MODE 100 HZ VERTICAL COVERAGE IN OMNI MODE 100 HZ 8 1 2 RS15 arrays IMPORTANT RS15s arrays must be installed with bumper set
52. tional Frequency Response 3db a 35Hz 100Hz 35Hz 100Hz Usable Range 6db a 35Hz 250Hz 35Hz 150Hz Sensitivity 1W 1m b 105dB SPL Nominal 103dB SPL Nominal Peak SPL 1m b 136 139dBPeak 133 136dBPeak 2x700W to 2 x 1200W 80 2x700W to 2 x 1200W 8Q Dispersion Omni amp Directional pattern over the entire useable bandwidth depending on the NX242 or NXAMP TDcontrollers setup two channels of the NX242ES4 or NXAMP are required to process directional setups Directivity Index c 1 5 lt Q lt 2 1 7dB lt DI lt 3dB Q 4 3 Crossover Frequency From 80Hz to 200Hz From 80Hz to 125Hz NX242 or NXAMP TDcontrollers preset dependent Nominal Impedance 2x 80 2x 80 Recommended Amplifiers 1 amplifier channel is required for omni 2 amplifier channels are required for mode operation rated at 1400 to 2400 Watts directional mode operation each rated at into 401 700 to 1200 Watts into 8Q per channel SYSTEM OPERATION Electronic Controller GEOS12 Analogue TDcontroller NX242ES4 Digital TDcontroller amp NXAMP Powered Digital TDcontroller presets are precisely matched to RS15 and include sophisticated protection systems Using RS15 without a properly connected TDController will result in poor sound quality and can damage components Speaker Cables 1 1 Right or Rear 2 2 Left or Front The RS15 must use separate cables to the main system Bumper Flying Plates Handles Dolly Rear
53. umper set horizontally and all cabinets at 0 Coverage adjustments can be efficiently implemented through the steering technique which consists in implementing delays in cabinets to tilt coverage up or down IMPORTANT Steering techniques should not be applied to clusters of less than 4 RS15 Coverage control through steering technique increases with cluster height Steering can be applied by group of 2 3 or 4 RS15s in Omni Mode as well as in Directional Mode Page 40 58 RAY SUBS IMPLEMENTATION A 8 See d GROUP OF 2 RS15S STEERING GROUP OF 3 RS15S STEERING GROUP OF 4 RS15S STEERING Steering delays values for the pairs can easily be computed according to following formula t h sin 0 C metric t is the value to be applied to the second pair his the height of tilted elements 0 91m for 2 RS15s 1 365m for 3 RS15s 1 82m for 4 RS15s C is the speed of sound 343m s 8 3 2 Delay values implementation e f the coverage is to be tilted down then top group delay should be set at Oms and delay should progressively increase on lower groups e f the coverage is to be tilted up then lower group delay should be set at Oms and delay should progressively increase on upper pairs e Delay value for first group is always Oms e Delay value for second group is t e Delay values for subsequent groups are 2r 3t etc Table below lists these values for typical angle values
54. utput of the amplifier 4 Calculate the gain using the formula Gain 20 LOG Vout Vin Some examples Vin Gain 32dB 3708 1 4V sensitivity 1350Wrms 0 1 V LV 2V 4V 7 1 V 0 5 V 5V 10 V 20 V 35 4 V 1V 10 V 20 V 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 or GEO S12 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 on the pro audio market have the following operating modes e Stereo two fully independent channels deliver identical power into identical loads e NEXO recommends Stereo Mode for all amplifier channels feeding RS15 s 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
55. ystem 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 e When de rigging the system ensure that the same duty of care is given to the procedure as for the installation Pack RS15 components carefully to prevent damage in transit 6 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 e Always survey the supporting structure upon which a ground stack is to be built 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 e Ifthe 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 e 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 e Take care when stacking cabinets Always employ safe lifting pr

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