KARA® - Audiobizz
Contents
1. WWW L ACOUSTICS COM A G KARA MODULAR WST LINE SOURCE USER MANUAL Z o n x W gt WWwW L ACOUSTICS COM 1 SAFETY WARNINGS All information hereafter detailed applies for the L ACOUSTICS KARA Modular WST Line Source designated in this section as the product 1 1 Symbol description Throughout this manual the potential risks are indicated by the following symbols The WARNING symbol indicates a potential risk of physical harm to the user or people within close proximity to the product In addition the product may also be damaged gt The CAUTION symbol notifies the user about information to prevent possible product damage The IMPORTANT symbol is a notification of an important recommendation of use gt IMPORTANT 1 2 Important safety instructions Read this manual 2 Heed all safety warnings 3 Follow all instructions 4 The user should never incorporate equipment or accessories not approved by L ACOUSTICS 5 Sound Levels Sound systems are capable of producing high Sound Pressure Levels which can be dangerous and potentially cause hearing damage especially when exposed to the2. Grill x2 Fin 22 Front protective Rear protective element x2 element handle x2 Connector plate Ball locking pin x8 Rigging point x4 Figure 3 KARA enclosure KARA_UM_ML_1 1 WWW L ACOUSTICS COM BEN 6 INSTALLATION 6 1 FIving or stacking KARA The KARA fully integrated four point rigging system Figure 3 with inter enclosure angular adjustment from 0 to 10 allows the following setups e Flying a vertical array of up to 24 KARA or 4 SBI8 I2 KARA using the L ACOUSTICS M BUMP M BAR rigging structure and eventually the KARA PULLBACK rigging accessory e Stacking a vertical array of up to 9 KARA or 2 SB18 6 KARA using the L ACOUSTICS M BUMP M BAR M JACK KARA ANGARMEX platform AN Refer to the KARA Rigging manual 3 4 to get acquainted with KARA system specific rigging procedures and mechanical limits WARNING 6 2 Connecting KARA The KARA enclosure is driven and powered by the dedicated L ACOUSTICS LA8 amplified controller Each of the LA8 amp channel pairs 1 2 and 3 4 can drive up to three KARA enclosures in parallel For more details please refer to the LA8 User manual 3 4 The KARA enclosure is equipped with two 4 point SpeakON connectors wired in parallel allowing connection with another KARA enclosure in parallel using the L ACOUSTICS SP 7 SP10 or SP25 cables It is re
3. Note This drawing is onlv a cabling scheme and does not represent a valid configuration Figure 6 Six KARA enclosures connected to an LA8 controller 72 3 KARA preset The KARA preset features a dedicated system contour for mid and long throw applications within the 55 Hz 20 kHz frequency range Activate the LOAD PRESET menu from the LA8 amplified controller front panel and then select the KARA preset Refer to the LA8 User manual 3 4 for additional instructions The preset is also accessible using LA NETWORK MANAGER Software refer to the LA NETWORK MANAGER User manual 3 4 The accessible parameters in FULL RANGE mode are shown in the following chart Table 3 Accessible parameters in FULL RANGE mode Outputs to connect assignments Mute Gain Delay Polarity IN B Input signal B IN B X KARA enclosure O O O KARA enclosure IN input signal A B channel A B LF low frequency transducer HF high frequency transducer KARA_UM_ML_1 1 WWW L ACOUSTICS COM 12 EN 7 3 HIGH PASS mode 7 3 1 Description In HIGH PASS mode the KARA is 100 Hz high pass filtered and is intended to be used as a fill distributed system to reinforce a main svstem Figure 7 KARA distributed reinforcement svstem example 7 3 2 Connecting KARA to LA8 The first two KARA enclosures are connect
4. 10 Conditions which require immediate service Servicing is required when the product has been damaged in any way such as e The product has been exposed to rain or moisture e The product was dropped or the enclosure is damaged e The product does not operate normally II Manual AN Keep this manual in a safe place during the product lifetime This manual forms an integral part of the product Reselling of the product is only possible if the user manual is available Any changes made to the product have to be documented in writing and passed on to the buyer in the event of resale 1 3 EC declaration of conformity L ACOUSTICS 13 rue Levacher Cintrat Parc de la Fontaine de Jouvence 91462 Marcoussis Cedex France States that the following product Loudspeaker enclosure KARA Is in conformity with the provisions of Low Voltage Directive 2006 95 EC Applied rules and standards EN60065 Electrical Safety Established at Marcoussis France March IS 2010 Christophe Pignon Head of Research amp Development dept KARA_UM_ML_1 1 WWW L ACOUSTICS COM 2 EN 2 CONTENTS l SAFETV WARNINGS l Pali Svimbol des riptioni a RN EA SAA NN l 3 EC declaration of AS NN 2 2 CONTENTS 3 3 INTRODUCTION 4 3 11 Welcome to LACOUSTICS merantai a e A eee a A a 4 3 2 Symbol description sis iii e EE A E E TAE E A 4 3 3 AAA NAS 4 34 We links iii aaa ea a a 4 4 KARA SYSTEM 5 5 KARA ENCLO
5. ooncncocnnocnnocanacananananananananananananananananocn oran n rana canacanacinnss 20 8 3 2 Front face including HF protection fabrie seen nesa sensara 21 8 3 3 O A 21 8 34 LP transducers AAA iosei iaaea cdavesuaedatesusedaveshdedatesnscdavesuaedatesutessvesetedatesnsesevesweedatesubedsts 22 A A OS 22 8 3 6 A AAN 23 8 3 7 AAA NON 23 9 SPECIFICATIONS 24 KARA_UM_ML_1 1 WWW L ACOUSTICS COM 3 EN KARA MODULAR WST LINE SOURCE USER MANUAL VERSION 1 1 3 INTRODUCTION 3 1 Welcome to L ACOUSTICS Thank you for purchasing the L ACOUSTICS KARA Modular WST Line Source This manual contains essential information on installing and operating the product correctly and safely Read this manual carefully in order to become familiar with these procedures As part of a continuous evolution of techniques and standards L ACOUSTICS reserves the right to change the specifications of the product and the content of this manual without prior notice Should the product requires repair or if information about the warranty is needed please contact an approved L ACOUSTICS distributor The address of the nearest distributor is available on the L ACOUSTICS web site 3 2 Symbol description All along the manual a bracketed number refers to a section For example 3 2 stands for the present Symbol description section 3 3 Unpacking Carefully open the shipping carton and check the product for any no
6. I Pre install the cables of the connector plate in the enclosure with a long red cable and a long black cable for each LF transducer and the short red and black cables for the HF transducer Mount both LF transducers 8 3 4 LF transducer mounting procedure 3 On the back side of the enclosure connect the red cable to the red terminal of the LF transducer and the black cable to the black terminal push the spring loaded terminal slide the cable in and release the terminal 4 Mount the connector plate and screw in six Torx screws T30 bit thread locker 3 N m 27 in lb KARA UM ML 1 1 WWW L ACOUSTICS COM 23 EN KARA MODULAR WST LINE SOURCE USER MANUAL VERSION 1 1 9 SPECIFICATIONS Reference KARA Frequency response Usable bandwidth 10 dB 55 Hz 20 kHz KARA preset line source configuration Maximum SPL 139 dB KARA preset Nominal Directivity 6dB Horizontal 10 symmetric 350 Hz 16 kHz Vertical Dependant upon number of elements and line source curvature Transducers LF 2x 8 neodymium mounted in a bass reflex tuned enclosure HF Ix 3 neodymium diaphragm compression driver mounted to a DOSC waveguide Filtering Active Nominal impedance LF section 8 Q HF transducer 8 Q Long term RMS handling LF 2x 450 W HF 80 W IKARA 100 preset Connectors 2 x 4 point SpeakON wired in parallel Dimensions W x H h x D 730 x 250 164 x 482 mm 28 7 x 9 8
7. 6 4 x 19 inch 730mm 28 7 in 250mm 9 8 in 482mm 19 in 164mm 6 4 in 383mm 15 1 in SIDE COTE FRONT FACE TOP DESSUS Weight 26 kg 57 2 lbs Vertical array rigging gt L ACOUSTICS M BUMP rigging frame Certified for flying up to 24 KARA or 4 SB18 12 KARA and stacking up to 9 KARA or 2 SB18 6 KARA Inter enclosure angles 0 1 2 3 4 5 7 5 10 First enclosure angle range in stacked configuration from 5 to 415 gt L ACOUSTICS M BAR extension bar for M BUMP gt L ACOUSTICS M JACK stacking bases x4 for M BUMP including 2 angle arm extensions gt L ACOUSTICS KARA ANGARMEX angle arm extensions x2 for stacked configurations L ACOUSTICS KARA PULLBACK rigging accessory External structure Material 15 mm Baltic birch plywood Finish Grey brown RAL 8019 Front Polyester powder coated steel grill Airnet acoustically transparent fabric Rigging Zinc and polyester powder dual coated steel Protective elements and fins Polyamide Handles Integrated into the cabinet and the protective elements Peak level measured at m under free field conditions using 10 dB crest factor pink noise with specified preset and corresponding EQ settings 2 Installation safety limits are specified in SOUNDVISION Software which is designed to help with L ACOUSTICS product implementation KARA_UM_ML_1 1 WWW L ACOUSTICS COM 2
8. KARA PULLBACK Six KARA enclosures SB28 KARA ANGARMEX M JACK Figure I KARA system components part I KARA_UM_ML_1 1 WWW L ACOUSTICS COM 6 EN LA8 LA NETWORK MANAGER SOUNDVISION L N SPIO SP25 DOFILL LA8 DOIO DO25 Figure 2 KARA svstem components part 2 KARA UM ML 1 1 WWW L ACOUSTICS COM KARA MODULAR WST LINE SOURCE USER MANUAL VERSION 1 1 5 KARA ENCLOSURE The L ACOUSTICS KARA enclosure contains two direct radiating 8 LF transducers mounted in a bass reflex tuned enclosure and one 3 HF diaphragm compression driver coupled to DOSC waveguide Based on a bi amplified active 2 way design the nominal impedance of the KARA enclosure is 8 ohms for each of the HF and LF sections With a coplanar transducer configuration in the LF region and a DOSC waveguide in the HF region KARA fulfills the WST Wavefront Sculpture Technology coupling conditions and thus can be qualified as a true line source array This configuration also provides 110 coverage pattern as well as smooth tonal response free of secondary lobes over the entire frequency range The KARA fully integrated rigging allows combining enclosures as a variable curvature vertical line source array The KARA cabinet is made of high grade Baltic birch plywood with remarkable mechanical and acoustical properties for improved long term durability Rigging angle Rigging front AQ Handle x2 arm x2 arm x2 RNA o
9. insert two BLP sling ends into them arrange both slings as shown in Figure 15 2 Install the protective element on the enclosure side and screw in both hex screws 5 mm hex bit thread locker 3 N m 27 in lb 3 Turn the enclosure on the other side and repeat the procedure for the second front protective element Rear protective elements removal procedure I Put the enclosure horizontally with rear side facing the user 2 Remove both screw nut assemblies from a rear protective element and the corresponding rigging element 5 mm hex bit 13 mm hex socket 3 Remove both hex screws from the rear side of the enclosure 4 Remove the rear protective element Pay attention not to loose the upper rigging spacer and steel bar and put them in a safe place as these are not provided in the replacement kit 5 Repeat steps from 2 to 4 for the second rear protective element KARA UM ML 1 1 WWW L ACOUSTICS COM 21 EN KARA MODULAR WST LINE SOURCE USER MANUAL VERSION 1 1 Rear protective elements mounting procedure I 2 3 Place the small spacer on the rigging piece Place a steel bar on a rear protective element and insert two hex screws Install the protective element on the enclosure handle oriented outwards and BLP slings underneath and screw in both hex screws 5 mm hex bit thread locker 5 N m 45 in lb Install and screw in two screw nut assemblies across the rigging and the protective element 5 mm hex bit 13 mm
10. warranty will no longer apply KR GRKARA gt KR HPBC34 KR HSBC34 KR HPPH85 DP KR PRKARA Y KR TISSU KR PIN621 KR KARACNT Figure 15 KARA exploded view Table 6 Replacement kits and utilities Reference Description Service procedure KR GRKARA Complete front face replacement kit including HF protection fabric 8 3 2 KR TISSU HF protection fabric replacement kit 8 3 2 KR PRKARA Protective elements replacement kit 8 3 3 KR HPPH85 LF transducer replacement kit 8 3 4 KR HPBC34 HF transducer replacement kit 8 3 5 KR HSBC34 HF diaphragm replacement kit 8 3 6 KR KARACNT Connector plate replacement kit 8 3 7 KR PIN621 Set of ten 5 16 R BLPs round shaped ball locking pins with fixing material KRLOCKBLUE Medium strength thread locker 5 pipettes of 50 g KR PAINT8019 Grey brown RAL 80199 paint 12 kg Table 7 Recommended tools and material Electric screwdriver with torque selector N m or in lb 3 mm hex bit 13 mm hex socket key Sine wave generator 4 mm hex bit T30 Torx bit 5 mm hex bit 2 sided tape KARA_UM_ML_1 1 WWW L ACOUSTICS COM 8 3 2 Front face including HF protection fabric Replacement kit and tools KR GRKARA or KR TISSU electric screwdriver with torque selector N m or in lb 5 mm hex bit T30 Torx bit KR LOCKBLUE Front face removal procedure Put the enclosure vertically w
11. 4 EN WWwW L ACOUSTICS COM Document reference KARA UM ML l 1 Distribution date October 2151 2010 2010 L ACOUSTICS All rights reserved No part of this publication may be reproduced or transmitted in any form or by any means without the express written consent of the publisher Su oO a 6 a U 2 JU Ja Su g o U oO fe g T A
12. NTOUR allows reaching some unprecedented results when KARA SB18 assemblies are flown and SB28 are stacked due to the extended bandwidth and low end capabilities of KARA Ol SB18_100_C ic KARA 6 a KARA co VI ISB28 60 SB28_ 60 CJ Figure 13 KARA SBI 8 SB28 combination examples in LOW EXTENSION mode KARA UM ML 1 1 WWW L ACOUSTICS COM 17 EN KARA MODULAR WST LINE SOURCE USER MANUAL VERSION 1 1 7 4 2 Connecting KARA to LA8 The first two KARA enclosures are connected to the output channel pairs 1 2 and 3 4 of the LA8 controller Two additional KARA enclosures can be connected in parallel with each first one Therefore a single LA8 amplified controller can drive up to six KARA enclosures see Figure 14 la oooO ooo oo O asad hee Note This drawing is only a cabling scheme and does not represent a valid configuration Figure 14 Six KARA enclosures connected to an LA8 contr
13. OM 15 EN KARA MODULAR WST LINE SOURCE USER MANUAL VERSION 1 1 4 When combining KARA with SB28_60 the KARA is associated with the SB28 in decoupled configurations only The SB28 KARA recommended ratio is 1 2 Notel A small KARA array typically composed of 6 enclosures as shown in Figure 2 of standard curvature provides a flat contour If needed the KARA contour can be reinforced in the low frequency domain using the LF CONTOUR tool refer to the LA NETWORK MANAGER User manual 3 4 with frequency set at 180 Hz and gain set between O and 4 dB The association of KARA and LF CONTOUR allows reaching some unprecedented results when KARA are flown and SB28 are stacked due to the extended bandwidth and low end capabilities of KARA Note2 This configuration is possible but not optimized Due to the lower sensitivity and additional LF extension of SB28 versus SB18 it requires a SB28 KARA ratio of 1 2 a third more 18 drivers are needed a l o KARA ClO NI AINA O go SB28_60 Figure 12 KARA SB28 combination examples in LOW EXTENSION mode part 2 KARA UM ML 1 1 WWW L ACOUSTICS COM 16 EN 5 When combining KARA with SB18_100 and SB28 60 the KARA is associated with the SB18 in flown closely coupled configurations only The SB28 is staked so that it is decouple
14. S COM 13 EN KARA MODULAR WST LINE SOURCE USER MANUAL VERSION 1 1 7 4 LOW EXTENSION mode 7 4 1 Description In LOW EXTENSION mode KARA operates within its nominal bandwidth 55 Hz 20 kHz to allow combinations with the dedicated complementarv SB18 subwoofer and or the high power SB28 subwoofer The bandwidth of the system is extended down to 32 Hz with the SB18 and 25 Hz with the SB28 The combination of the extended bandwidth of the KARA preset and the SB18 will allow reaching the greatest sub low contour within some physical restrictions due to the frequency overlap between both systems The LOW EXTENSION mode comprises 5 preset combinations When combining KARA with SBI8_100 the KARA is associated with the SBI8 in closely coupled configurations only The SBI8 KARA recommended ratio is 1 3 When SB18 are flown in a column above KARA the maximum authorized configuration when using KARA preset along with the SB18_ 100 or 5B18_100_C preset is 3 SBI8 and 9 KARA in order to keep an acceptable distance between both KARA and SB18 acoustic centers see the left side of Figure 9 When SB18 are flown in close proximity beside KARA this limitation does not occur anymore see the right side of Figure 9 Note Two SB18 array arrangements are possible whether the directivity pattern is intended to be omni directional or cardioid The cardioid arrangement is recommended within arrays containing a
15. SURE 8 6 INSTALLATION 9 6 17 lA NO 9 6 27 Connectin KARA 205 155620 ar L Get aa i e a e ta EA 9 7 OPERATION H Td SSvstemiconfigtitationi i vicodin dde H 7 2 FULLRANGE Mode sess ie i bi snes eeu felu a anaconda arpa rip caballeria identidad H 72 1 Descriptiom NN H 1 2 2 Connecting KARA to LAB ossai airne aaeeeiai eS asakas ian aSa AENA asasi aea na Eea a aS 12 7 2 3 KARA 0 AT 12 Tid E mode iie a a RN 13 7 3 1 Description i A e 13 732 Connecting KARA to LAB aie cccsccsscccsesseccoctonecstecsseceecsoostedetesndeotteosdesceavadectessiledeievateotiessieseisvntestiesats 13 7 3 3 KARA FI Preset zenon ian anea i a e tods ea a e aS SA E SEA aa EARE A A a RA 13 74 LOW EXTENSION mode siniri eda deal a ae adidas 14 7 4 1 DeSCrIPCION ssccestsssceescsoneedetspieesetsonteleesoteevctsentetulsolyepetsontedut RER a S ebetcontedetestenvtenneens 14 74 2 Connecting KARA to LAB ieron e a a N E e i satana 18 7 4 3 KARA preset bet ia Is ie A A A E E E O Oa 18 8 CARE AND MAINTENANCE 19 8 1 Maintenance informations useat arinaa iiaa i aaa ia eii ia ai adnia 19 8 2 Testing procedUrGsesesusnn unh Enu DES D E G aR S R oteeswegothe sung sbeesues omnedung obegsteponbe sung sbeeswegsts 19 8 2 Aco stical Checks cscssccacsss NN 19 8 2 2 Mechanical check siana vaa raS aE NAERA IS A A EVAT AEA EREE 19 8 2 3 External aspect Cheek vicio A E E E N 19 8 3 Authorized service AAA ii ae A 20 8 3 1 Replacement kits and recommended tools
16. TWORK MANAGER User manual 3 4 with frequency set at 180 Hz and gain set between O and 4 dB The association of KARA and LF CONTOUR allows reaching some unprecedented results when KARA are flown and SB 18 are stacked due to the extended bandwidth and low end capabilities of KARA JO oo gt MNSZ Si 6 0 i E KARA TA KARA o O eco OOO ooo OOO O E of SBI8_60 ISBI8 60 C OI Figure 10 KARA SBI8 combination examples in LOW EXTENSION mode part 2 O 3 When combining KARA with SB28_100 the KARA is associated with the SB28 in coupled configurations only The SB28 KARA recommended ratio is 1 3 o Note This configuration is possible but not optimized Due to the lower sensitivity and additional LF extension of SB28 versus SB18 it requires a SB28 KARA ratio of 1 3 two times more 18 drivers are needed IKARAJ A o FAS o O SB28_100 Figure 1 KARA SB28 combination examples in LOW EXTENSION mode part 1 KARA_UM_ML_1 1 WWW L ACOUSTICS C
17. commended to use the L ACOUSTICS DOFILL LA8 cable to connect the KARA enclosure to the LA8 amplified controller This cable must be extended by one of the L ACOUSTICS DOI0 or DO25 cables see Figure 2 and Figure 4 A maximum of three KARA enclosures can be connected to each of the LA8 1 2 and 3 4 output channel pairs AN ALWAYS connect the new DOFILL LA8 cable on the LA8 amplified controller for active 2 way applications as using the old DOFILL cable mav result in damaging the loudspeaker components refer to the LA8 CACOM CABLES Technical bulletin 3 4 The L ACOUSTICS wiring convention is as follows SpeakON connector labels Connection to transducers I LF l LF 2 HF 2 HF KARA_UM_ML_1 1 WWW L ACOUSTICS COM 9 EN KARA MODULAR WST LINE SOURCE USER MANUAL VERSION 1 1 DOFILL LA8 DO10 or DO25 SP 7 SP10 or SP25 Y ooo 0 Figure 4 Connecting three KARA in parallel to the channel pair 1 2 of an LA8 controller To ensure both high performance and safety L ACOUSTICS recommends the exclusive use of l high quality fully insulated speaker cables made of stranded copper wire In order to preserve a high damping factor it is desirable to keep lo
18. d from the KARA SB18 assembly The SB28 SB18 KARA recommended ratio is 1 1 3 The bandwidth of the system is extended down to 25 Hz When SBI8 are flown in a column above KARA the maximum authorized configuration when using KARA preset along with the SB18_100 or 5B18_100_C preset is 3 SBI8 and 9 KARA in order to keep an acceptable distance between both KARA and SB18 acoustic centers see the left side of Figure 9 When SBI18 are flown in close proximity beside KARA this limitation does not occur anymore see the right side of Figure 9 Notel Two SB18 array arrangements are possible whether the directivity pattern is intended to be omni directional or cardioid The cardioid arrangement is recommended within arrays containing a multiple of four SB18 enclosures and in that case the SB18_100 preset must be replaced by SBI8_100_C see Figure 13 and refer to the SB 18 User manual 3 4 The same remark applies for the SB28 where the SB28_60 preset must be replaced by SB28_60_C see Figure 13 and refer to the SB28 User manual 3 4 Note2 A small KARA array typically composed of 6 enclosures as shown on the left side of Figure 13 of standard curvature provides a flat contour If needed the KARA contour can be reinforced in the low frequency domain using the LF CONTOUR tool refer to the LA NETWORK MANAGER User manual 3 4 with frequency set at 180 Hz and gain set between 0 and 4 dB The association of KARA and LF CO
19. ed to the output channel pairs 1 2 and 3 4 of the LA8 controller Two additional KARA enclosures can be connected in parallel with each first one Therefore a single LA8 amplified controller can drive up to six KARA enclosures see Figure 8 Note This drawing is only a cabling scheme and does not represent a valid configuration INB OUT 1 2 IN A OUT 3 4 IN B elle Figure 8 Six KARA enclosures connected to an LA8 controller 7 3 3 KARA FI preset The KARA FIJ preset features a nominally flat system contour down to 100 Hz for short and mid throw distributed configurations This preset is designed for a single element Activate the LOAD PRESET menu from the LA8 amplified controller front panel and then select the KARA Fl preset Refer to the LA8 User manual 3 4 for additional instructions The preset is also accessible using LA NETWORK MANAGER Software refer to the LA NETWORK MANAGER User manual 3 4 The accessible parameters in HIGH PASS mode are shown in the following chart Table 4 Accessible parameters in HIGH PASS mode Outputs to connect assignments Mute Gain Delay Polarity IN B Input signal B IN_B X O KARA enclosure X X X KARA enclosure IN input signal A B channel A B LF low frequency transducer HF high frequency transducer KARA_UM_ML_1 1 WWW L ACOUSTIC
20. gm mounting procedure I Ensure that the voice coil gap on the transducer is free from any particles If necessary clean out the gap by using 2 sided tape Install the diaphragm in the gap 3 Install the back cover and screw in four hex screws 3 mm hex bit 2 N m 18 in lb Balance the torques between screws while screwing so as to properly center the diaphragm 4 Apply a low level LF sine wave for example volt at 440 Hz to ensure that the diaphragm is properly centered in the gap a pure sound should be heard If not slightly unscrew center screw and make another test 5 Connect the red cable to the red terminal of the transducer and the black cable to the black terminal push the spring loaded terminal slide the cable in and release the terminal 6 Mount the connector plate and screw in six Torx screws T30 bit thread locker 3 N m 27 in lb 8 3 7 Connector plate Replacement kit and tools KR KARACNT electric screwdriver with torque selector N m or in lb 4 mm hex bit 5 mm hex bit T30 Torx bit KR LOCKBLUE Connector plate removal procedure I Remove the connector plate by removing the 6 Torx screws T30 bit 2 Disconnect both cables from the HF transducer push the spring loaded terminal slide the cable out and release the terminal 3 Remove both LF transducers 8 3 4 LF transducer removal procedure 4 Remove the connector plate with its cables Connector plate mounting procedure
21. hex socket 5 N m 45 in lb by paying attention that the upper screw slides into the spacer Repeat the procedure for the second rear protective element 8 3 4 LF transducers Replacement kit and tools KR HPPH85 electric screwdriver with torque selector N m or in lb 4 mm hex bit 5 mm hex bit T30 Torx bit KR LOCKBLUE LF transducer removal procedure I 2 3 Remove the grill and fin facing the transducer 8 3 2 Front face removal procedure steps from to 3 Remove the transducer from the enclosure by removing the 4 hex screws with split and flat washers 4 mm hex bit Pay attention no to bend the terminals Disconnect both cables from the terminals LF transducer mounting procedure Connect the red cable to the large terminal of the transducer and the black cable to the narrow terminal Mount the transducer in the enclosure terminals oriented towards the enclosure s side and screw in four hex screws with split and flat washers into each hex screw insert a split washer and then a flat washer follow this sequence and screw in the assembly 4 mm hex bit 3 N m 27 in b Mount the grill and fin facing the transducer 8 3 2 Front face mounting procedure steps 3 and 4 8 3 5 HF transducer Replacement kit and tools KR HPBC34 electric screwdriver with torque selector N m or in lb 5 mm hex bit T30 Torx bit KR LOCKBLUE HF transducer removal procedure I 2 Remove the connector plate by re
22. ing elements protective handles grill rear panel and transducers 3 Check that all mobile parts operate normally ball locking pins front arms angle arms 4 Check the quality of contact and locking action of the SpeakON sockets In case of mechanical trouble lock tight or replace the faulty component IF it is authorized 8 3 Otherwise contact an L ACOUSTICS authorized representative 8 2 3 External aspect check I Remove the dust from the front face two grills and HF fabric with a vacuum device 2 If necessary replace the HF protection fabric 8 3 2 3 If necessary repaint the cabinet paint reference given in 8 3 1 If paint is applied protect the mechanical and plastic parts Do not apply paint to the front grill fabric as it could fill the holes and deteriorate the acoustic transparency KARA_UM_ML_1 1 www L AGOUSTICS COM 19 EN KARA MODULAR WST LINE SOURCE USER MANUAL VERSION 1 1 8 3 Authorized service procedures 8 3 1 Replacement kits and recommended tools The replacement kits KR available for the customer are shown in Figure 15 and listed in Table 6 with reference to the corresponding service procedures Table 7 is a list of all tools and material needed for KARA service not provided Service and repair work for any other part must be carried out by an L ACOUSTICS authorized representative Otherwise the customer may be exposed to dangerous situations and the
23. ith front side facing the user and logo oriented rightwards Remove a fin on one side by removing both hex screws 5 mm hex bit Remove the corresponding grill by removing the 4 Torx screws T30 bit Repeat steps 2 and 3 for the fin and grill on the other side Remove the HF protection fabric from the center of the front face fabric and joint frame mawnN Front face mounting procedure I Stick two foam joints around both large sides of the new fabric 2 Install the new HF protection fabric on the enclosure with cut part facing the enclosure 3 Mount a grill grill with logo on the right with BLP holes oriented outwards and screw in four Torx screws T30 bit thread locker 3 N m 27 in Ib Mount a fin and screw in two hex screws 5 mm hex bit thread locker 3 N m 27 in lb 5 Repeat steps from 3 to 4 for the other side of the front face 8 3 3 Protective elements Replacement kit and tools KR PRKARA electric screwdriver with torque selector N m or in lb 5 mm hex bit 13 mm hex socket key KR LOCKBLUE Front protective elements removal procedure l Put the enclosure horizontally with left or right side facing the user 2 Remove the front protective element by removing both hex screws 5 mm hex bit 3 Turn the enclosure on the other side and repeat step 2 for the other front protective element Front protective elements mounting procedure I Insert two hex screws into a front protective element and then
24. lications To fulfill such demanding conditions KARA contains high grade and reliable components e Weather resistant transducers e Baltic birch plywood cabinet e Polyester powder coated steel grill e Airnet high resistant non biodegradable front grill fabric e Oxidation resistant screws and rigging points However in order to ensure product performance and safety it is essential to frequently inspect the KARA cabinet These checks need to be done on a regular basis depending on the conditions of use The testing procedure consists of three steps as described in 8 2 8 2 Testing procedure 8 2 1 Acoustical check Connect a sweep frequency generator to the active input of the LA8 amplified controller Apply a sweep from 55 Hz to 20 kHz with a maximum voltage of 0 2 volts 12 dBu 14 dBV the sound should remain pure and free of unwanted noise AN 0 2 volts is a maximum value that can generate verv high sound levels at given frequencies Use ear protection to set the sound level before testing WARNING In case of acoustical trouble apply the Mechanical check 8 2 2 to verify if it is due to a structural vibration If the problem persists replace the faulty electrical component 8 3 4 8 3 7 8 2 2 Mechanical check I Inspect the general aspect of the enclosure and attached parts no signs of deformation fissure or corrosion 2 Check that all fixed parts are locked tight to the enclosure rigg
25. m over a long period of time WARNING Do not stay within close proximity of the loudspeakers when operating 6 Heat Do not operate the product near anv heat source such as radiators or other devices CAUTION 7 Water and moisture Even if the product is weather resistant it can not be exposed to moisture rain sea spray shower steam for a long period of time nor put in direct contact or partially immersed in water This would cause GOO irreversible damage to exposed components 8 System parts and rigging inspection All system components must be inspected before use in order to detect any possible defects Please refer to the Care and Maintenance section of this manual as well as any other manuals pertaining to the system for a detailed description of the inspection procedure Any part showing any sign of defect must immediately be put aside and withdrawn from use to be inspected by qualified service personnel gt gt gt e WARNING KARA_UM_ML_1 1 WWW L ACOUSTICS COM 1 EN KARA MODULAR WST LINE SOURCE USER MANUAL VERSION 1 1 9 Mounting instructions Do not place the product on an unstable cart stand tripod bracket or table The product may fall and be seriously damaged and may cause serious human injury Any mounting of the product should follow the manufacturer s instructions given in this manual and should use a mounting accessory recommended by the manufacturer
26. moving the 6 Torx screws T30 bit Disconnect both cables from the transducer push the spring loaded terminal slide the cable out and release the terminal Remove the HF assembly by removing both hex screws with split and flat washers 5 mm hex bit HF transducer mounting procedure Mount a HF assembly to the back side of the waveguide and screw in two hex screws with split and flat washers into each hex screw insert a split washer and then a flat washer follow this sequence and screw in the assembly 5 mm hex bit 5 N m 45 in b Connect the red cable to the red terminal of the transducer and the black cable to the black terminal push the spring loaded terminal slide the cable in and release the terminal Mount the connector plate and screw in six Torx screws T30 bit thread locker 3 N m 27 in lb KARA UM ML 1 1 WWW L ACOUSTICS COM 22 EN 8 3 6 HF diaphragm Replacement kit and tools KR HSBC34 sine wave generator electric screwdriver with torque selector N m or in Ib 3 mm hex bit T30 Torx bit KR LOCKBLUE 2 sided tape HF diaphragm removal procedure I Remove the connector plate by removing the 6 Torx screws T30 bit 2 Disconnect both cables from the transducer push the spring loaded terminal slide the cable out and release the terminal 3 Remove the back cover from the transducer by removing the 4 hex screws 3 mm hex bit and pull the diaphragm out from the magnet HF diaphra
27. multiple of four SBI8 enclosures and in that case the SB18_100 preset must be replaced by SB18_100_C see Figure 9 and refer to the SBI8 User manual O J olol O O alo OO OOOO ISBI8 100 IKARAJ hd Figure 9 KARA SB18 combination examples in LOW EXTENSION mode part 1 KARA UM ML 1 1 WWW L ACOUSTICS COM 14 EN 2 When combining KARA with SB18 601 the KARA is associated with the SB18 in decoupled configurations The SBI8 KARA recommended ratio is 2 3 Notel Two SBI8 array arrangements are possible whether the directivity pattern is intended to be omni directional or cardioid The cardioid arrangement is recommended within arrays containing a multiple of four SBI8 enclosures and in that case the SB18_60 preset must be replaced by SBI8_60_C see Figure 10 and refer to the SBI8 User manual 3 4 EN Note2 A small KARA array typically composed of 6 enclosures as shown in Figure 10 of standard curvature provides a flat contour If needed the KARA contour can be reinforced in the low frequency domain using the LF CONTOUR tool refer to the LA NE
28. of 10 m 32 8 ft and 25 m 82 ft Each DO cable is an 8 conductor cable with 4 mm conductor cross section 13 SWG AWG and features 8 point PA COM connectors Note The PA COM standard is fully compatible with the CA COM standard The L ACOUSTICS SP 7 SPIO and SP25 Loudspeaker cables with respective lengths of 0 7 m 2 3 ft 10 m 32 8 ft and 25 m 82 ft will allow connecting KARA to KARA and can also be used to connect KARA to LA8 Each cable is 4 conductor cable with 4 mm conductor cross section 13 SWG I1 AWG and features 4 point SpeakON connectors The KARA system is exclusively driven and powered by the L ACOUSTICS LA8 Amplified controller 3 4 This ensures intelligent protection filtering and equalization of the enclosures Four channels of amplification are provided along with the factory LA8 PRESET LIBRARY 3 4 ensuring the optimization and performance of the system within limitations of the recommended configurations Each system design configuration should first be modeled and studied using L ACOUSTICS SOUNDVISION Software 3 4 Software predictions are based on the preset parameters stored in the amplified controllers Up to 253 amplified controllers can be interconnected and monitored through the proprietary L ACOUSTICS L NET Network using LA NETWORK MANAGER Software 3 4 KARA UM ML 1 1 WWW L ACOUSTICS COM 5 EN KARA MODULAR WST LINE SOURCE USER MANUAL VERSION 1 1 Two SBI8 enclosures
29. oller 7 4 3 KARA preset The KARA preset features a dedicated system contour for mid and long throw applications within the 55 Hz 20 kHz frequency range allowing it to be used along with the SB 18 and or SB28 presets Note The same KARA preset is used in both FULL RANGE and LOW EXTENSION modes PRESET LIBRARIES User manual embedded in the LA8 PRESET LIBRARY Pack 3 4 to obtain l Depending on the chosen configuration delays may have to be added in the presets Refer to the LA4 8 the delay values IMPORTANT Activate the LOAD PRESET menu from the LA8 amplified controller front panel and then select the KARA preset Refer to the LA8 User manual 3 4 for additional instructions The preset is also accessible using LA NETWORK MANAGER Software refer to the LA NETWORK MANAGER User manual 3 4 The accessible parameters in LOW EXTENSION mode are shown in the following chart Table 5 Accessible parameters in LOW EXTENSION mode mma Ta pe Outputs to connect assignments Mute Gain Delay Polarity IN B Input signal B IN B X O KARA enclosure X X X KARA enclosure IN input signal A B channel A B LF low frequency transducer HF high frequency transducer KARA UM ML 1 1 WWW L ACOUSTICS COM 18 EN e GARE AND MAINTENANCE 8 1 Maintenance information The L ACOUSTICS KARA enclosure has been designed for various intensive indoor and outdoor sound reinforcement app
30. th a set of factory presets will allow building all the common configurations C LR LCR distributed The KARA enclosures can be used as a standalone system in the FULL RANGE mode or as a reinforcement system in the HIGH PASS mode or in combination with L ACOUSTICS SBI8 or SB28 subwoofers in the LOW EXTENSION mode AN ALWAYS check that the KARA enclosures are connected to correct LA8 output channels before operating Note The latest version of the LA8 PRESET LIBRARY is downloadable from the L ACOUSTICS web site 3 4 7 2 FULL RANGE mode 7 2 1 Description In FULL RANGE mode KARA operates within its nominal bandwidth 55 Hz 20 kHz for standalone applications not requiring low frequency extension ale OO i KARA al elo Y y Figure 5 Standalone KARA line source system example KARA_UM_ML_1 1 WWW L ACOUSTICS COM 11 EN KARA MODULAR WST LINE SOURCE USER MANUAL VERSION 1 1 7 2 2 Connecting KARA to LA8 The first two KARA enclosures are connected to the output channel pairs 1 2 and 3 4 of the LAS controller Two additional KARA enclosures can be connected in parallel with each first one Therefore a single LA8 amplified controller can drive up to six KARA enclosures see Figure 6 a ala al E asad O her ak o
31. ticeable damage Each L ACOUSTICS product is tested and inspected before leaving the factory and should arrive in perfect condition If found to be damaged notify the shipping company or the distributor immediately Only the consignee may initiate a claim with the carrier for damage incurred during shipping Be sure to save the carton and packing materials for the carrier s inspection 3 4 Web links Please check the L ACOUSTICS web site on a regular basis for latest document and software application updates Table provides links for all downloadable items mentioned in this manual ALWAYS refer to the latest document version ALWAYS use the latest software application version Table Links to documents and software applications KARA User manual www acoustics com kara USER MANUAL KARA Rigging manual www acoustics com kara RIGGING MANUAL SB 18 User manual www l acoustics com sbl8 USER MANUAL LA8 User manual www acoustics com la8 USER MANUAL LA8 PRESET LIBRARY Pack www l acoustics com la8 LA8 PRESET LIBRARY LA NETWORK MANAGER User manual www acoustics com la network manager USER MANUAL SOUNDVISION Software www l acoustics com soundvision LA8 CACOM CABLES Technical bulletin www l acoustics com download Technical publications KARA_UM_ML_1 1 WWW L ACOUSTICS COM 4 EN 4 KARA SYSTEM The L ACOUSTICS KARA enclosure belongs
32. to the KARA Modular WST Line Source System and operates over the 55 Hz to 20 kHz nominal frequency bandwidth This response can be extended down to 32 Hz with the addition of the L ACOUSTICS SB 18 subwoofer The system approach developed by L ACOUSTICS for KARA consists of the elements needed to fully take advantage of the possible configurations and optimize the system The main components of the system are see also Figure l and Figure 2 KARA Full range active 2 way modular WST enclosure M BUMP gt Structure for flying or stacking a vertical KARA and or SB18 array M BAR gt Extension bar for M BUMP M JACK gt Stacking bases x4 for KARA and or SB18 arrays including 2 angle arm extensions KARA ANGARMEX gt Angle arm extensions x2 for stacked KARA and or SBI 8 arrays KARA PULLBACK gt Rigging accessory for KARA array pullback configuration SB18 Compact high power subwoofer SB28 gt High power subwoofer LA8 Amplified controller LA NETWORK MANAGER Remote control software SOUNDVISION Acoustical and mechanical modeling software The KARA system components are compatible with standard L ACOUSTICS accessories These accessories include the L ACOUSTICS DOFILL LA8 Loudspeaker cable allowing connection of the KARA enclosure to the LA8 amplified controller This cable features 8 point PA COM and 4 point SpeakON connectors and must be extended using one of the L ACOUSTICS DOI0 or DO25 Cables with respective lengths
33. udspeaker cables as short as possible and with a gauge offering low resistance per unit length The following table provides information regarding the recommended length versus wire cross section Two cases are possible depending on the impedance load connected to the LA8 8 Q for a single KARA enclosure 4 Q for two KARA enclosures in parallel 2 7 Q for three KARAJ Table 2 Maximum cable length versus conductor cross section for Damping Factor gt 20 Cross section Length for one KARA Length for two KARA Length for three KARA 8 Q load 4 Q load 2 7 Q load we e CO A A EA ICI DE E e ICI ICI IC CC IET According to the calculation in Table 2 one DO25 cable 4 mm 25 m can be used to power two KARA in parallel 4 Q load with a damping factor still greater than 20 KARA UM ML 1 1 WWW L ACOUSTICS COM 10 EN 7 OPERATION 7 1 System configuration The choice of a system configuration should be the result of an electro acoustic study conducted by an expert System Engineer or Audio Consultant However this will not be discussed here as sound design aspects are beyond the scope of this manual This study can rely on the simulations modeled in SOUNDVISION software yielding electro acoustic predictions which take into account the enclosures manufacturer data and particular situational usage as well as the projected environment Three operation modes FULL RANGE HIGH PASS and LOW EXTENSION each one associated wi
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