Midas PRO2 Owner's Manual page 264

246
Item
5
6
7
8
9
10
11
12
13
14
15
Control
SLOPE switch
(digital trim only)
stage box control
knob
CHECK switch
(stage box only)
30Hz subsonic
filter switch
low pass control
knob (digital trim
only)
Low pass filter
switch /[IN]
(digital trim only)
High pass filter
switch /[IN]
(digital trim only)
high pass control
knob (digital trim
only)
Phase switch
Gain trim (digital
trim) control knob
Graph
Chapter 30: Input Channels
Function
Selects the low pass filter. Where, switch on
(illuminated) = 12dB slope and switch off = 6dB
slope.
Adjusts the input gain of the remote amplifier in 5dB
steps, ranging from -5dB to +40dB. Note that the
stage box control knob on the control surface will
only adjust the gain currently selected to the GUI
input channel strip, that is, stage box or digital trim.
Monitors the mic amp input after the 30Hz filter, but
before any further processing. (The 30Hz subsonic
filter switch accesses the high pass filter on DL431
Mic Splitter when connected to a PRO2. In this case,
the gain steps would be 2.5dB from -2.5dB to
+45dB.)
Acts on remote amplifier (mic splitter) to remove very
low frequencies in the audio signal — usually caused
by noise on stage. This avoids wasting valuable
headroom trying to digitise it.
Adjusts frequency of low pass filter in the range 2kHz
to 20kHz.
Activates low pass filter in the input channel signal
path before the insert points and EQ.
Activates high pass filter in the input channel signal
path before the insert points and EQ.
Adjusts frequency of high pass filter in the range
10Hz to 400Hz.
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.
This is used to correct input signal phase problems
when trying to sum signals that are 180° out of
phase. For example, where two mics are facing each
other 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 control
centre sums the two signals into the output.
Reversing the phase of one signal causes the mics to
have the same phase, thus avoiding cancellation.
Applies continuous trim adjustment (small digital
steps) of the input signal level in the range –40dB to
+20dB. Gives a further 60dB of fine adjustment
(DSP) on top of the remote amplifier gain setting.
This control knob on the input fast strips can be
controlling stage box gain, digital trim or delay,
depending on the current state of the swap.
Shows the effects of currently applied filter.
PRO2 Live Audio System
Owner's Manual