Filter
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p.9
mono input module
features
gain
The Input gain control range is closely related to the status of the
PAD
switch and the
LINE switch. In order to establish proper gain structure in
the console, input gain settings must be set correctly.
LINE—switch-up PA D—switch-up
15 to 75dB of gain can be added the mic-input signal.
The impedance at the input XLR is 4kΩ.
LINE—switch-up PA D—switch-down
-5 to 55dB of gain can be added to the mic-input signal.
The impedance at the input XLR is 4kΩ.
LINE—switch-down PA D—switch-up or -down
-10 to 45dB of gain can be added the line-input signal.
The impedance at the input XLR and input 1/4" TRS is 20kΩ.
high-pass filter—HPF
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.The slope of the high-pass filter is 12dB per octave.
HPF
High-pass filter is on.
HPF—variable control
When the high-pass filter is on, this control selects a frequency
between 20Hz and 400Hz as the point where attenuation begins.
1
If the channel peak
LED is illuminated,
first try lowering
the input gain control.
Only when this method is
unsuccessful should the pad
switch be engaged.
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