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1.0 OVERVIEW
Main Features:
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4 channels of Frequency Conscious Noise Gating
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Variable Hi and Low Pass side chain Filters
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Fully variable Threshold and Release
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Fast and Slow Attack modes
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Range switching between -20dB and -80dB
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Side chain Listen facility
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Stereo linking
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Side chain inserts
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Balanced Inputs-Outputs with +4dBu/10dBV switching
The G400 is a professional 4 channel noise gate that can be operated as 4 separate
processors or linked as two independant stereo pairs. In Link mode, Channel 1 and 3
provide Master control and 'rms summing' is used to ensure that signals from both the
linked channels operate the gate.
Each channel has fully variable controls for filter Frequency, Threshold and Release.
Range is switchable to provide either full muting (-80dBu) or a more subtle level of signal
attenuation (-20dBu).
Two Attack modes are available; Fast or Slow and Release is manually adjustable. In-
built sidechain 'auto-level-sensing' and Hold circuitry ensure that false triggering and
chatter are kept to a minimum. High and Low pass filters are included and can be used
for a wide range of frequency conscious gating applications. A LISTEN facility allows the
filters to be easily tuned by ear. Each channel also has a sidechain insert with front panel
indication when an External Key jack is plugged in.
Led indicators are provided for Above-Below Threshold, Bypass and Link.
All inputs and outputs are electronically balanced and can be switched b4dBu
and -10dBV operating levels.
