Buzz Audio soc-20 mid side optical compressor - Manual (Page 4)

④
There are two audio paths provided, the LINE path and the S/C (side chain) path.
The main audio input and output connect to the LINE connectors and if you
wish to insert another device into the SOC-20 side chain (more on this later),
use the S/C INSERT connectors.
4] Controls and Indicators
The SOC-20 has two channels with identical controls. By now you might have
guessed that the SOC-20 can be used as 2 mono audio compressors, a stereo
compressor (left/right) and stereo mid/side compressor. In either case the
controls of the two channels are the same.
DRIVE
This control adjusts the amount of signal sent to the side chain circuit and
therefore the amount of gain reduction (or compression) applied to the input
signal. Clockwise rotation increases the amount of gain reduction.
OUTPUT dB
Adjusts the post compression make up gain to bring the output level back up to
the desired volume. Clockwise rotation increases gain from 0dB to +15dB gain.
ATTACK
This switch has 5 positions and adjusts the time taken (in milli-seconds) for the
SOC to respond to signals that exceed the threshold (as set with the Drive
control). This is the time taken to achieve 20dB of gain reduction. The “A”
position is Auto where the attack time is totally dependant on the program
material and the amount of gain reduction occurring. This is perhaps the most
“musical” mode and could also be called the “Classic Sound” setting.
RELEASE
This switch sets the time taken (in 100’s of mS) for the SOC-20 to release from
20dB gain reduction. For example, selecting setting 4 means the compressor
will take approx 400mS to return to 0dB gain reduction from an initial 20dB of
gain reduction. “A” stands for Auto and in this position a clever little circuit is