Operating Manual - PQX 571 and PQX 572 Parametric Equalizer
Parametric Filter Level Control
Parametric Filter Frequency Control
Parametric Filter Bandwidth Control
High Shelf Level Response
5.3High Shelving Filter (Filter No. 7)
These concentric controls work the same way as the low shelf controls described in (1) and (2) except the filter response starts at the center frequency selected and continues up in frequency.
5.4Master Level
The overall gain of the equalizer is adjusted by this control. The master level gain stage is placed prior to any filter stages so that increasing the master level will not amplify filter noise. If the Master EQ switch is out, the level control has no affect. Signals are then simply routed through the equalizer at unity gain.
5.5Clip Indicator
This red LED illuminates when an amplifier in any of the filters comes within 3 dB of clipping, includ- ing those filters which are not engaged. The maximum signal level through the PQX equalizers is greater than +22 dBu.
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