Universal Audio LA-610 Channel Strip - Manual (Page 10)

5
T4 Optical Compressor Front Panel (right side)
This panel has the Peak Reduction, Gain, Meter Function and Compressor Mode
controls. Each control is discussed in the following sections.
PEAK REDUCTION
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0
COMPOUTPUT
PREAMP
COMP
LIMIT BYP
METER
MODE
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GAIN
T4 Optical Compressor
Figure 2: T4 Optical Compressor Front Panel
Peak Reduction
The compressor section Peak Reduction control determines when the compressor
receives a signal “loud” enough to trigger gain reduction as well as total output level.
Higher settings will increase the relative amount of compression. Heavily compressed
signals can be made louder by increasing the large Gain knob just to the right of the Peak
control knob.
Gain
The Gain control determines the final output level from the LA-610. Once the desired
amount of limiting is set by adjusting the Peak Reduction Control, the Gain Control can
be used to set the required output level. Set the Meter switch to the Output position so
that the meter reads the desired output level from the LA-610.
Limit/Compress
The Limit/Compress Switch changes the characteristics of the compressor I/O curve.
When in the Compress position, the curve is gentler, and presents a low compression
ratio. A higher compression ratio results when the switch is set to the Limit position.
Meter Function
The VU meter can be used to indicate 610 preamp output section (feeding the compressor
section), compressor gain reduction or final output level. The Meter function is
determined using the three position knob to the left of the meter. When Output is
selected, a meter reading of 0 corresponds to an output level of +4 dBm at the LA-610
output.