Tube Tech CL 2A Dual Opto Compressor User Manual
Page 2
LYDKRAFT ApS
Mose Allé 20, DK 2610 Rødovre
Denmark
2
The interconnection implies, that the unit that 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 remaining
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 sidechain-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: link 1, ring: link 2).
The two jack socket on the rear panel is connected in parallel and both are input/output.
CONTROLS:
GAIN:
The gain control is used to "make up" for the gain loss that 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 +10 dB.
RATIO:
The ratio control varies the ratio by which the input signal is
compressed.
If the ratio selected is to 1,5:1, and the input signal increases 12 dB, the
output signal is only increased by 8 dB. The ratio control is continuously
variable from 1,5:1 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 off to -20 dBU.
METER:
The VU-meter switch has two positions:
1.
Comp.
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.
(981214)