Alesis iMultiMix 16 USB, Reference Manual

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A Tour of the iMultiMix16 USB
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2) MUTE / ALT 3/4
This switch has two purposes. The mute function is pretty self-
explanatory: when you press the switch, the channel’s output is no
longer routed to the main mix output. The second purpose of this
switch is that in addition to muting a channel, it also routes it to
the ALT 3/4 OUT found in the patchbay. This is where you get
the iMultiMix’s extra stereo bus. If you don’t have anything
connected to the ALT 3/4 OUT, the switch acts only as a mute
button. If you do have something connected—say, a multitrack
recorder—this button acts as a signal router.
3) PFL / SOLO
The PFL / SOLO switch allows you to single out a channel so you
can make adjustments to it before you run it into the main mix.
This is useful for setting an instrument’s gain or EQ and for
troubleshooting. PFL stands for “pre-fade listen.” In other words
this switch lets you hear the signal before it is affected by the fader.
This switch is post-EQ.
4) PAN or BAL
This control—labeled PAN on the mono channels and BAL on
the stereo channels—lets you assign the channel to a particular
spot within the stereo spectrum. If you turn this knob to the left,
you can hear the signal move to the left, and if you turn it to the
right…you get the picture. The pan controls do this by adjusting
the amount of the signal being sent to the left main mix bus versus
the right main mix bus. The balance controls do it by controlling
the relative balance of the left and right channel signals being sent
to the left and right main mix buses.
5) AUX
Here you’ll find knobs that control the levels of aux sends A and
B. AUX A is either pre-fader or post-fader, depending on the
position of the PRE / POST switch. When the switch is in the
raised position, the aux send is pre-fader. When the switch is
depressed, the aux send is post-fader.
What does all this mean? In POST mode the aux send is affected
by the fader, EQ and HPF settings. In PRE mode the aux send is
affected only by the EQ and HPF settings. POST mode is
generally used for sending the signal to an external effects device
(so that the fader controls the signal level), and PRE mode is
usually used for cue sends (for example, sending a signal to
headphones while recording, for which you may not want the fader
to alter the channel’s level).
AUX B is always post-fader, as indicated by the word “POST” to
the right of this knob. Like AUX A, AUX B can be used for
routing signals to external devices. And when you are using the
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