Peavey X-VCA owner manual Group section gate functions, To set up the gate function

dynamics control 9

group section: gate functions

Each Audio Group also incorporates a "noise gate" function. In live sound applications, this feature is most commonly used to eliminate unwanted leakage from surrounding sources into on-stage microphones (on drum kits in particular).Although the term "gate" is used here for the sake of simplicity, the X-VCA "gate" system actually functions as a downward expander. Where a traditional gate is either "on" or "off", a downward expander attenuates signal proportionally at descending levels below the threshold point. As a result, downward expanders tend to be more forgiving in their characteristics.

To set up the gate function:

1.Turn the gate on - Press the GATE switch. The ON/THR LED will light to indi- cate gate function is active.

2.Set the gate threshold - Turn the center knob of the dual concentric THR/RAT control to set the input signal level below which gating function will take effect. Gate threshold may be set to any level from -20dB to -60dB (and below). The gate ON/THR LED lights when input signal drops below the set threshold.

3.Set the gate ratio - Turn the outer ring of the dual concentric THR/RAT control to set the gates downward expansion ratio. Above the set threshold, signal will be tracked at 1:1. Below the threshold, the output signal will be further decreased (attenuated) by the ratio selected.

Once set-up is complete, the effects of the gating function can be viewed on the ATT gain reduction meter. This meter shows overall reduction applied by the dynamics system.

NOTE:When the compressor/limiter function also is engaged, the meter displays attenuation applied by both the compressor and gate functions. However, in most applications, only one function will be active at any given moment. Active function is indicated by red illumination of either the compressor ON/THR LED or the gate ON/THR LED.

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