Tube Tech LCA 2B Dual Channel Tube VCA Compressor - Manual (Page 2)

LYDKRAFT ApS
Mose Allé 20, DK-2610 Rødovre
Denmark
2
CONTROLS:
GAIN: The gain control is used to "adjust" for the gain loss, which takes
place when the unit is compressing. It is placed between VCA and
output stage. The gain-control is continuously variable from -6dB to
+10dB.
DISPLAY:
The green LED display shows the gainreduction for both the
compressor and for the limiter. A red LED shows if the limiter is
active.
The display is from the factory supplied in dot mode. This can be
altered to a bar by placing a strap on U6 (U106) from
pin 3 to pin 9
LINK SWITCH:
Interconnects several compressors on link 1 or link 2.
If the compressor is left in the off position, it works entirely
independently.
IN/BYPASS:
This switch switches the compressor in and out of the signal path.
In the bypass position the entire unit is switch out.
COMPRESSOR:
RATIO:
The ratio control varies the ratio by which the input signal is
compressed.
If the ratio selected is to 2:1, and the input signal increases 10dB,
the output signal is only increased by 5dB. The ratio control is
continuously variable from 1,6:1 to 20:1.
THRESHOLD: The threshold is the point where the compressor begins its
action. It is defined as the point where the gain is reduced
by 1dB.
The threshold is related to the output level and is continuously
variable from off to -10dBU.
NOTE: If both the RATIO control and the THRESHOLD control are at
their extreme (> 15:1 and < -5dB), overreaction can be
expected.
ATTACK: The attack control chooses how fast/slow the compressor
responds to an increase in the input signal.
The attack control is continuously variable from 0.3 to 70
milliseconds.
RELEASE: The release control chooses how fast/slow the compressor
responds to a decrease in the input signal.
The release control is continuously variable from 0,07 to 2
seconds.
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