Alesis MultiMix12Firewire Frequently Asked Questions Manual page 10

3. Route the MAIN mix
Press down the button that routes the MAIN mix to the
HEADPHONE/CONTROL ROOM knob.
4. Adjust the listening volume
Then, use the HEADPHONE/CONTROL ROOM knob to control the volume.
Note that this is Alesis' standard routing, but there are plenty of other
possibilities. For instance, you could choose to monitor through the MAIN
outputs, and then press the 2 TK TO MIX button on to hear the computer signal
or off not to hear it. There are a number of different routings that can work well.
Can I connect two MultiMix mixers together for twice the channels?
This is not possible at this time.
I hear an echo, like a slapback delay
Most likely, the computer recording program is playing back the audio it is
receiving. Therefore, you're hearing it once through the mixer and again, with a
bit of latency delay, as it comes back from the computer.
To avoid this issue, turn off the "input monitoring" function of your computer
recording program. Often, this function can be switched on or off per track, with
an icon located close to the track's record-arm, solo, and mute buttons.
My track has reverb effects, but they are not being recorded
You'll understand this issue when you consider the MultiMix's internal routings.
The MultiMix's preamp gain, EQ, and channel fader settings all operate on each
individual channel. For example, if you change these settings on channel 1,
channel 2 will not be affected at all.
Reverb and other AUX effects work differently. When you apply an effect from a
channel, you're really sending a bit of that channel's signal out to the reverb or
other processor. This way, you can have only one reverb processor, but you can
still send a bit of each channel's signal to it. (If the MultiMix had an individual
reverb processor for each channel, it would be outrageously expensive.)
The problem, then, is that this one reverb processor can't take the input from all
of the channels, process them independently, and then send them back—in correct
proportion and without the input from the other channels—to each channel. Since
all of those channels' inputs are combined as they are sent to the reverb, the
situation is kind of like Humpty-Dumpty in reverse: once all the channels have
been combined, they can't be broken apart.
MultiMix Firewire FAQ & Troubleshooting Guide Page 10