Peavey X-Four - Manual (Page 27)

p. 27
stereo input module
features
input gain— GAIN
This control adjust the gain of the input preamp(s).
Both left and right input signals are affected by this control.
polarity reverse—ø
This switch inverts the polarity of the right input signal in relation to the
left input signal.
see—mono input module
Polarity of the right input signal is inverted.
Polarity of the right input signal is not inverted.
high-pass filter— HPF
The high-pass filter is activated for signals coming into both the left and
right inputs.The shelving frequency is fixed at 80Hz with a slope of 12dB
per octave.
Proper use of the high-pass filter reduces or eliminates unwanted low fre-
quencies, without substantially affecting the program material. Quite often
such unwanted low frequencies are included with in-coming mic- or line-
input signals. For example, stage-rumble or wind can be picked up through
vocal mics.
2