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LYDKRAFT ApS

 

 

Mose Allé 20, DK 2610 Rødovre 

 

Denmark 

2

COMPRESSOR INTERCONNECTION:

 

 
The side chain sockets for interconnection of several compressors are located on the rear panel. 
 
A switch (BUS SELECT) on the front selects which compressors are interconnected, and on 
which bus they are connected. If you e.g. have 10 compressors in a rack, you can select 
compressor 1,5,7 and 8 on bus 1, and compressor 2,3,6 and 9 on bus 2, leaving compressor 4 
and 6 in the off position. 
Compressors 1,5,7,8 are now interconnected and all four will perform the exact same 
compression. This applies to compressor 2,3,6 and 9 as well. Compressor 4 and 6 are 
independent. 
 
The interconnection implies, that the unit, which performs the most compression, is controlling 
the others. 
To choose which one you want to control, select the attack/release time, the threshold and the 
ratio on that unit, and turn the threshold fully counter clockwise on the reminding compressors. 
It is of course possible to have all the interconnected compressors control each other 
simultaneously. 
 
 

 

NB:

  Remember to set the ratio control and the gain control in the same position on the 

"slaves". Otherwise the stereo image could be shifted during compression. The 
attack/release-control on the slaves will have no effect. 

 
The input/output capability of the side chain-circuit allows up to 

ten

 compressors to be linked 

together. 
 
They are connected in parallel with a standard 1/4" stereo jack/-jack cord (tip: bus 1, ring: bus 2). 
 
The two jack socket on the rear panel is connected in parallel and both are input/output. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

 

(980112) 

Summary of Contents for CL 1B

Page 1: ...of both tubes valves are fed with a stabilized DC voltage The whole amplifier including input and output transformer and the power supplies are placed on one PC board Both input and output are balance...

Page 2: ...he unit which performs the most compression is controlling the others To choose which one you want to control select the attack release time the threshold and the ratio on that unit and turn the thres...

Page 3: ...o 40 dBU METER The VU meter switch has three positions 1 Input The meter is reading the level at the input socket 2 Compression The VU meter is reading gain reduction Its rest position is 0 VU and the...

Page 4: ...ected release time takes over is dependent upon the setting of the attack control The more CW the attack control is turned the longer time before the selected release control takes over The more CCW t...

Page 5: ...how much compression in dB we feel is needed for the various examples OVERALL COMPRESSION FINAL MIX COMPRESSION NEEDED 3 4 dB Attack release select Fix man Attack 2 o clock Release 10 o clock Ratio 9...

Page 6: ...ply a signal of 1 kHz 30 0 dBU into the input of the compressor 2 Turn the GAIN control fully clockwise 3 Set the RATIO control at 2 1 4 Adjust the pre set GAIN located on amp psu PCB to an output rea...

Page 7: ...above 8 Adjust P 3 until the meter is reading 10 0 VU 9 Remove the DC voltage from the side chain jack socket 10 Repeat step 6 9 NB The VU meter accuracy should be within 0 5 dB when reading compress...

Page 8: ...LYDKRAFT ApS Mose All 20 DK 2610 R dovre Denmark 8 Over view of the sidechain PCB PCB 870316 0 1 2 P2 P3 P1 P5 0VU 10VU 10dB Rel 10 Sec PCB 870316 3 P4 P3 P2 P1 0VU 10VU 10dB Rel 10 Sec 101115...

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