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LARAK_UM_EN_1.0 

w w w . l - a c o u s t i c s . c o m  

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The LA-RAK working principle is entirely modular and the engineer can physically assemble and interconnect multiple 
elements  to  fit  numerous  applications.  The  LA-RAK  configuration  based  on  a  multiple  of  3  LA8  yields  the  maximum 
flexibility and power resources for any L-ACOUSTICS

®

 system from compact coaxial systems up to KUDO

®

 and K1 

stadium line source array systems, as it is shown in Figure 2: 
 

 

 

Figure 2: LA-RAK power and flexibility capability 

 

LA-RAK power capability (one system driven by all 3 LA8) 

LA-RAK flexibility capability (split 

 subs + 

⅔ 

tops) 

Summary of Contents for LA-RAK

Page 1: ...LA LA LA LA RAK RAK RAK RAK TOURING RACK TOURING RACK TOURING RACK TOURING RACK user manual user manual user manual user manual VERSION 1 0 VERSION 1 0 VERSION 1 0 VERSION 1 0 www l acoustics com...

Page 2: ......

Page 3: ...lso be damaged 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 1 1 2 Symbols indi...

Page 4: ...ect any power cord from being walked upon or pinched particularly at the plugs and the points where the power cords exit from the apparatus 8 Mains supply see section 6 5 for details Only connect the...

Page 5: ...t be blocked or covered The product should be installed in accordance with the manufacturer instructions given in this manual 14 Heat Do not operate the product near any heat source such as radiators...

Page 6: ...s human injury Any mounting of the product should follow the manufacturer instructions and should use the mounting accessories recommended by the manufacturer as described in this manual 22 Personnel...

Page 7: ...not ground stack the rack assembly on uneven ground or platform If the system is ground stacked on a structure platform or stage always check that this last can support the total weight of the system...

Page 8: ...A RAK composed of the Rack cabinet RK 9U Amplified controllers LA8 Power distribution panel LA POWER Signal distribution panel LA PANEL Flying frame LA RAK BUMP Are in conformity with the provisions o...

Page 9: ...p cooling 22 6 5 Connecting LA RAK to AC mains 23 6 5 1 LA POWER three phase circuit 23 6 5 2 LA POWER mono phase circuits 24 6 6 Connecting LA RAK to analog audio source 25 6 6 1 External analog audi...

Page 10: ...lly open the shipping carton and check the product for any noticeable damage Each L ACOUSTICS product is tested and inspected before leaving the factory and should arrive in perfect condition If found...

Page 11: ...DOMP 2 and DOMF cables see section 6 6 1 Are also available the L ACOUSTICS SP 7 SP10 SP25 DO 7 DO10 DO25 DOFILL LA8 DO3WFILL and DOSUB LA8 loudspeaker cables The respective lengths are 0 7 m 2 3 ft...

Page 12: ...er ser m m m manual anual anual anual VERSION 1 0 LARAK_UM_EN_1 0 w w w l a c o u s t i c s c o m 10 10 10 10 Figure 1 L ACOUSTICS components which connect to the LA RAK V DOSC dV DOSC 115XT HiQ KUDO...

Page 13: ...pplications The LA RAK configuration based on a multiple of 3 LA8 yields the maximum flexibility and power resources for any L ACOUSTICS system from compact coaxial systems up to KUDO and K1 stadium l...

Page 14: ...o m 12 12 12 12 5 5 5 5 LA LA LA LA RAK RAK RAK RAK TOURING RACK TOURING RACK TOURING RACK TOURING RACK The L ACOUSTICS LA RAK is composed of the RK 9U cabinet in which are mounted three LA8 amplified...

Page 15: ...topologies On the rear face two hinge mounted panels cover and protect the analog modulation and network connectors of the amplified controllers to create a neat and tangle free cable environment The...

Page 16: ...n panel featuring a 32 A three phase circuit one IN plug and one LINK OUT socket to power a secondary rack This configuration allows the power to be automatically balanced with an even number of LA8 p...

Page 17: ...a future development Figure 7 The LA PANEL The L ACOUSTICS LA RAK BUMP flying frame is engineered to fly 4 LA RAK for a drive capacity of up to 24 K1 enclosures It can be flown using single pick poin...

Page 18: ...e references in section 7 3 6 2 Shipping the LA RAK The removable dolly board see Figure 9 is for shipping a vertical array of up to two LA RAK It secures to the bottom LA RAK using two coupling bars...

Page 19: ...olly board from the LA RAK 3 Lift up the second LA RAK and put it onto the first one align the rails and put the stacking runners onto the runner guides 4 Secure the second LA RAK to the first one a T...

Page 20: ...w w w l a c o u s t i c s c o m 18 18 18 18 5 Put a third LA RAK onto the second one by repeating the steps from 2 to 4 A maximum of three LA RAK can be stacked onto one dolly board Secure the LA RAK...

Page 21: ...RAK 3 Install the LA RAK BUMP onto the LA RAK align the rails and put the stacking runners onto the runner guides Respect the orientation indicated beside the LA RAK FRONT label 4 Secure the LA RAK BU...

Page 22: ...ails and put the stacking runners onto the runner guides 10 Secure the first LA RAK to the second one use both preceding coupling bars a Turn a spring loaded safety and slide the coupling bar in along...

Page 23: ...height Secure the LA RAK flown array to the main structure using the SAFETY shackle see Figure 13 and a sling Figure 15 Four flown LA RAK maximum configuration 6 3 3 Flying procedure using the K1 BUM...

Page 24: ...e operation ensure that the front filter system of each LA8 is clean and dust free see the LA8 User Manual While operating keep the LEXAN front and rear doors retracted see below and do not block the...

Page 25: ...rd does not apply A second LA RAK can be plugged in the female LINK OUT socket of the first LA RAK to be powered in parallel Powering two LA RAK in parallel is only possible in the 230 V 10 countries...

Page 26: ...ion 6 5 1 powers the three mono phase circuits corresponding to the L1 L2 and L3 Shuko female outlets located on the rear face These last allow connection of the three LA8 amplified controllers mounte...

Page 27: ...n also be routed from the last LA RAK to other signal processing devices using the DOMM cable Cascading several LA RAK cause losses in the analog signal The losses increase in line with the number of...

Page 28: ...nalog audio cable set description Cable designation Input connector s Output connector s Length m ft DOMF 6 x balanced female XLR PA COM female 19 pin with ring 1 5 5 DOMM PA COM female 19 pin with ri...

Page 29: ...this case both LINK connectors are used to cascade the three LA8 input channels Note In this example only the A channel is physically linked on each LA8 as the A signal can further be internally rout...

Page 30: ...update To connect the L NET network use CAT5e U FTP cables or higher category fitted with RJ45 connectors The length of each digital network cable must not exceed 100 m 328 ft Multiple digital network...

Page 31: ...A NETWORK MANAGER software to the L NET network The three following figures show external L NET cabling principles for the daisy chain star and hybrid network topologies Figure 24 L NET external cabli...

Page 32: ...OURING RACK OURING RACK u u u user ser ser ser m m m manual anual anual anual VERSION 1 0 LARAK_UM_EN_1 0 w w w l a c o u s t i c s c o m 30 30 30 30 Figure 26 L NET external cabling part 3 hybrid top...

Page 33: ...procedure below see also Figure 28 a Remove the LA PANEL from the LA RAK by removing the four front Pozidriv screws b Unscrew the back protecting plate by removing the four Torx screws c Remove the o...

Page 34: ...cabling schemes are shown in the following figure The star network topology requires an additional switch not provided that can be mounted in the available 2U space located on the LA RAK Figure 29 L N...

Page 35: ...3 CA COM and 6 Speakon connectors that offers the same functionality as a speaker output patch panel Please refer to appropriate enclosure User Manuals as well as LA8 User Manual all available on the...

Page 36: ...nts Check the LA8 amplified controllers as described in the Care and maintenance section of the LA8 User Manual available on the L ACOUSTICS web site Check the quality of contact and locking action of...

Page 37: ...USA Japan LAPANEL LA PANEL signal distribution panel SE CHPRK9U10 1 m 3 ft XLR cable SE CHPRK9U03 0 35 m 1 ft XLR cable CP RK9UETH1 1 m 3 ft CAT5e U FTP cable CP RK9UETH2 0 3 m 1 ft CAT5e U FTP cable...

Page 38: ...o the K1 Rigging Procedures manual Vertically stacking or shipping Captive rigging components Certified for up to 3 LA RAK onto the dolly board External Structure Materials Polyethylene aluminum and s...

Page 39: ...PCB L DGA I O Front 2 x Ethercon sockets Rear 2 x RJ45 sockets with built in PCB Complementary accessories 6 x XLR 1 m 3 ft labeled cables 2 x XLR 0 35 m 1 ft bridge cables 4 x CAT5e U FTP 1 m 3 ft l...

Page 40: ...TING THE LA APPENDIX CONNECTING THE LA APPENDIX CONNECTING THE LA APPENDIX CONNECTING THE LA POWER US POWER US POWER US POWER US 9 1 LA RAK and LA POWER US presentation A 120 V version of the LA RAK t...

Page 41: ...ree L5 30 AC outlets L1 L2 and L3 are available for LA8 and six additional duplex outlets 2 front and 4 rear are to power auxiliary accessories such as Ethernet switches portable computer and the like...

Page 42: ...rcuit The LA POWER US connects to 120 V 10 30 A three phase AC mains using the male L 21 IN plug The LA POWER US only connects to three phase AC mains rated 120 V 10 30 A 50 60 Hz Contact a local L AC...

Page 43: ...nding to the three L5 30 female outlets located on the rear face L1 L2 and L3 These last allow connection of the three LA8 amplified controllers mounted in the LA RAK US see Figure 34 Each outlet is p...

Page 44: ...o m Document Reference LARAK_UM_EN_1 0 _________________ Copyright 2009 by L ACOUSTICS Parc de la Fontaine de Jouvence 91462 Marcoussis cedex France _________________ Distribution date July 20th 2009...

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