Mackie Onyx 820i Quick Start Manual page 16

INPUT (LINE or FW 1-2)
Channel 7 and 8 can either be fed from the 1/4" stereo
line-level inputs, or by FireWire outputs 1 and 2 from
your computer. This switch lets you choose which to use.
Either way, channels 7 and 8 receive line-level analog
audio signals just prior to the gain control, so channel
setup, gain adjustment and EQ adjustment are the same
for line or FireWire.
CONTROL ROOM FW 1-2
If this is engaged, you can listen to FireWire 1 and 2
playback from your computer in the control room and
headphones. This can also be added to the main mix if
control room assign to main mix is engaged. See below.
ASSIGN TO MAIN MIX
Engage the control room FW 1-2 switch and the
assign to main mix switch to play two tracks directly
from your computer through the control room/phones
source matrix and into the main mix. This is great for
listening to iTunes ® or other pre-recorded material from
your computer.
AUX SEND 1-2 to FW 5-6
This switch allows you to send a direct copy of the
aux send 1 and 2 outputs via FireWire to your computer.
This makes it possible to use a software effects
processor instead of an expensive external processor.
To setup a software effects processor:
• Set up an aux send in post mode
• Engage this switch, and aux send FireWire
outputs 5 and 6 will be available for your
computer.
• Pass this through your audio production
software running effects plug-ins.
• Return the processed output to mixer channels
7 and 8 (input switch set to FW 1-2).
• Alternatively bring the processed sounds into
the control room (engage FW 1-2) and add it to
the main mix (engage assign to main mix).
• You can even use the computer as two separate
independent mono in, stereo out processors.
Have aux 1 go into one plug-in, and aux 2 go
into a different one. The stereo outputs of both
plug-ins are combined back into the stereo
stream coming back to the mixer. Again,
performance will vary based on system
hardware.
Note: If this switch is selected, then there is no FireWire
output to your computer directly from mixer channels 5
and 6. Aux sends 1 and 2 go to your computer instead.
16 Onyx 820i
ASSIGN TO FW 7–8
This switch allows you to assign the left and right
main mix to FireWire outputs 7 and 8. For example, you
can record the live performance main mix onto your
computer. The output level to your computer is not
affected by the main mix level control.
Note: If this switch is engaged, then there is no FireWire
output to your computer directly from mixer channels 7
and 8. The main mix goes to your computer instead.