User Guide

Chapter 3
Omnipressor
Production Dates 1971 – 1984
Originally described as a ”professional-quality dynamic modifier”, the Omnipressor rapidly became a very
popular studio dynamics piece. Its unique Function knob allowed the engineer to move from Noise Gate
effects through dynamic reversal - an effect that reverses a sound’s envelope making loud sounds quiet,
and quiet sounds louder. This control, combined with unique gain and attenuation controls, lets you
produce extremely aggressive dynamics with very little tweaking. A cymbal, for example, can be made
to sound ”reversed” by setting a fast Attack and setting Function near its CW limit. The diagram below
illustrates the wide ranging Function control. Omnipressor is available as a Mono or Stereo plug-in.
3.1 Omnipressor Controls
3.1.1 Input Cal
These switches allow you to reduce the level feeding the effect by 10 dB, 20 dB, or 30 dB (when both
switches are pressed).
3.1.2 Input Threshold
Sets the gain crossover point. For example, when the system is in Compression mode, an input signal
below the threshold will have its amplitude increased and signals above the threshold will have their
amplitude reduced.
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