Tube Tech CL 1B Opto Compressor - Manual (Page 3)

LYDKRAFT ApS
Mose Allé 20, DK 2610 Rødovre
Denmark
3
CONTROLS:
GAIN: The gain control is used to "make up" for the gain loss, which takes place
when the unit is compressing. It is placed after the gain-reduction circuit
and therefore has no influence on the threshold setting. The gain-control is
continuously variable from off to +30 dB.
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 10 dB, the
output signal is only increased by 5 db. The ratio control is continuously
variable from 2:1 to 10:1.
THRESHOLD: The threshold is the point where the compressor begins its action. It is
defined as the point where the gain is reduced by 1 dB.
The threshold is continuously variable from +20dBU to -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 amount of
compression is shown as a decreasing deflection in
dB.
3. Output The VU-meter is reading the level at the output socket.
"0 VU" is equivalent to +4 dBU.
NB: Leave the meter switch in position compression as it might
introduce distortion if left in the input or output position.
IN/OUT: This leverswitch switches the compressor in and out of the signal path. The
out position bypasses the entire compressor.
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 0.5 to 300 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 0,05 to 10 seconds.
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