Crest Audio X-Four - Four-Band Stereo EQ Features

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stereo input module
four-band stereo EQ features
Although left and right signals are processed separately, the parameters are
set in tandem by common front-panel controls.
see—mono input module
high frequency—HF
15dB boost and cut at 12kHz—shelving response.
high-mid frequency—HM
15dB boost and cut.
Selectable frequency range of 400Hz to 8 kHz.
The response is bell-shaped with a fixed Q of 1.5
low-mid frequency—LM
15dB boost and cut.
Selectable frequency range of 80Hz to 2kHz.
The response is bell-shaped with a fixed Q of 1.5
low frequency—LF
15dB boost and cut at 80Hz.
The boost response is bell-shaped and the cut response is shelving.
equalizer—EQ ON
Equalizer is on.This switch can be used to make A/B comparisons
between "flat" and eq'd signals.
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