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LYDKRAFT ApS

 

 

Mose Allé 20, DK 2610 Rødovre 

 

Denmark 

4

ATTACK/RELEASE SELECT:

 

 
 

 

 

This switch selects how the compressor reacts to an increase (

attack

) or 

decrease (

release

) of the input signal. 

 
 

 

 

There are three settings of the switch: 

 
 

 

 

1. 

Fixed. 

 

 

 

 

Attack time: 1 msec 

 

 

 

 

Release time: 50 msec 

 
 

 

 

2. 

Manual. 

 

 

 

 

Attack time: from 0.5 msec to 300 msec 

 

 

 

 

Release time: from 0.05 sec to 10 sec 

 
 

 

 

3. 

Fix/man. 

 

 

 

 

This setting combines the release times of fixed and manual 
mode. The attack time is as in the fixed mode. 

 
The fix/man mode always has a fast attack, but it is possible to obtain a release time depending 
on the input signal, e.g. get a fast release when the peak disappears, then superseded shortly 
thereafter by the release time selected by the release control. 
 
From the time the peak disappears, until the selected 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

 the attack control is turned, the shorter time before the selected release 

control takes over. 

 
This function is valid only if the time of the peak is shorter than the setting of the attack control. 
 
If the peak of the program is longer than the setting of the attack control, or if the attack control 
has reached the full 

CCW

 position, it will respond as in the manual mode.  

 
The fix/man mode acts as an automatic release function with a constant fast attack time and fast 
release time for short peaks and a longer release times for longer peaks. 
 
This setting is mainly intended for use on program material (overall compression). 
 

BUS SELECT:

 

 

 

 

Interconnects several compressors on bus 1 or bus 2. 

 

 

 

If the compressor is left in the off position, it works entirely independently. 

 

 

(150426) 

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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