Pre-Mixer Gain (Gain) - Extron electronics DMP 128 User Manual

configuring an automix channel
Before configuring automix, Extron recommends that you set proper gain staging for the
input mics. This ensures that adequate signal is provided for automix to work properly.
An automix block is inserted for each microphone, and the mic assigned to a group (see
figure 33, Automix Groups Dialog on the previous page). Setting a reasonable NOM, the
maximum number of gated mics) for the microphone group will increase intelligibility by
limiting the number of open mics that are allowed to gate on at once. A NOM of three is
recommended.
In events where a small number of talkers may need priority over other talkers (such as a
presenter at a lectern) chairman mode can be enabled on the priority input channel.
Last mic mode can minimize the frequency of gate changes. This prevents rapid switching
of input mics by, ensuring that a talker is not gated off when their speech is paused.
After the automixer is configured, be certain to set the appropriate mix-points to include
automixing.

Pre-mixer gain (gain)

The pre-mixer gain control provides gain or attenuation
after the input processing signal chain. It includes a mono
long-throw fader with a – 100.0 to +12.0 dB gain range,
and a current level setting readout below the fader. Fader
adjustments are in 1 dB increments, while adjustments can
be entered manually to 0.1 dB resolution.
Default is unmuted at unity (0.0 dB) gain.
Selecting the fader handle with the mouse or clicking within
the fader area brings focus to the fader. The input signal level
can be adjusted using any of the following methods:
• Select and hold the fader handle, then drag it to desired
level in 1.0 dB steps.
• Select or tab to the fader handle, then use the up/down
arrow to set the desired level in 1 dB steps.
<Page Up> increases and <Page Down> decreases the
level in 5 dB steps.
• Click in or tab to the level readout field. Type a new value, then press <Enter> or
<Tab> to another area.
DMP 128 • Software Control
Fader Handle
Input
Signal Level
Readout
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