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Input channel gain and filter
1
gain trim control knob applies continuous trim
adjustment, in small digital steps, of the input signal
level (input amplifier gain) from –20dB to +20dB. The
appropriate swept filters are selected in or out of the
signal path by high
and low
switches.
2
phase switch applies a 180° inversion of the
input signal polarity within the input amplifier, such
that channel signal will have opposite polarity to the
input signal. Commonly used where two mics are
facing each other, for example, when using a mic on
both the top and bottom of a snare drum. Ordinarily,
the two mics would be out of phase - causing
cancellation when the console sums the two signals
into the output. Reversing the phase of one signal
causes the mics to have the same phase, thus
avoiding cancellation
3
TALK switch connects talk mic and generator
circuits to the mix bus. This is a mixing only function.
4
CHECK (meter) switch monitors the mic amp
input after 30Hz filter but before any further
processing.
5
LINK switches pair adjacent channels for stereo
operation by linking compressor side chains. Linkages
are editable but default to those in Table 7 "Linking -
input channels" on page 210.
XL8 Control Surface
Operator Manual
2
8
7
6
12
6
filter in the input channel signal path before the insert
points and EQ.
7
high pass control knob for adjusting frequency
pass filter
of high pass filter. High pass filter range is 20Hz to
400Hz.
8
SLOPE switches for high pass and low pass
filters - switches them in/out. Switch ON/OFF
indication is via GUI only.
9
filter in the input channel signal path before the insert
points and EQ.
10
low pass control knob for adjusting frequency of
low pass filter. Low pass filter range is 2kHz to 40kHz.
11
low pass control knob for adjusting frequency of
low pass filter. Low pass filter range is 2kHz to 40kHz.
This low pass switch changes the slope of the low pass
filter between 6dB and 12dB.
12
Graph showing the filter effects.
3
1
5
11
4
low pass filter switch activates low pass
high pass filter switch activates high pass
45
10
9
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