Overloud Gem Comp76 FET Compressor and Limiter Plug-In - Manual (Page 30)

OVERLOUD GEMS COMP670
COMP670
COMP670 models one the most popular compressors used in a large number of music productions
since its release in 1950. Finding a hardware unit is very di ffi cult nowadays, due to the lack of
availability and for the cost which is very high. So this accurate reproduction of the exactly same
response of such a compressor comes to a great importance.
Since real units can have slightly di ff erent harmonic and dynamic characters, three individual
models have been included into this GEM coming from units respectively located in: LONDON,
LOS ANGELES and MILAN.
STUDIO - Selects the model to use from the three allowable that have been sampled from studios
located in LONDON, LOS ANGELES and MILAN. LONDON studio unit has the most transparent
tone. LA one is a little smoother and has a bigger overall compression amount. MILAN unit has
larger harmonic generation due to some non original spare parts used to repair it.
INPUT GAIN - Controls the volume of the input signal. Level 14 corresponds to 0 dB. Turning the
knob clockwise the amount of compression will raise.
THRESHOLD - Adjusts the amount of compression.
TIME CONSTANT - Controls the Attack and Release time lengths.
AGC - Selects the Automatic Gain Control mode.
LEFT/RIGHT : The compressor works as two separate compressors with individual controls per
channel.
LAT/VERT : Stereo signal is split by a sum/di ff erence matrix into sum (upper/left channel) and dif-
ference (lower/right channel). The input signal level is controlled after the matrix, so the relation
between sum and di
ff erence channels can be controlled. At the compressor output, there is a
second matrix which turns it back into a stereo signal.
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