4.1
Owner's of the Mackie Music Mixer ProFX12 gave it a score of 4.1 out of 5. Here's how the scores stacked up:
32
ProFX8 and ProFX12
ProFX8 and ProFX12
Appendix D: USB interface
System Requirements
These are the minimum requirements for your com-
puter system to use the mixer's USB interface.
For the PC:
• Windows XP (service pack 2)
• Pentium 4 or Athlon XP processor
• 256 MB RAM
For the Mac:
• OS X (10.4.11 or higher)
• G4 processor
• 256 MB RAM
The internal USB interface will allow the left and
right main mix to be recorded on a Mac or PC computer.
It also allows two channels of audio from the computer
to be added to the main mix.
Plug and Play
No drivers or software installation is required. The
ProFX mixer's USB interface connects directly to the
USB port of your computer.
USB stream from computer
The following table shows the outputs from your com-
puter to the mixer’s USB interface:
The 2-channel digital stream from the computer
enters the mixer through the USB connector and is
converted to analog audio.
The audio level can be adjusted using the USB input
control [40].
Beware of a possible feedback loop, if you are
feeding the main mix back into the mixer.
USB stream to computer
In addition to a mix of channels, the USB output to
your computer can contain audio from your computer, if
the USB thru switch [41] is engaged.
The mains and headphone outputs are not af-
fected by the switch, and always provide a full
mix of channels and any 2-channel audio from
your computer.
The analog audio from the mixer is converted to digi-
tal signals by the USB interface’s A/D converters.
The following table shows the outputs to your com-
puter from the mixer’s USB interface:
Here are two examples of using the USB thru switch:
Studio Overdub – Tracktion playback is coming into
the mixer on USB inputs, and routing through
the mains/phones for you to hear. A guitar
plugged into channel 1 is being recorded via the
USB output, while you listen and play along to
the Tracktion playback. The USB thru switch is
out, so the output to be recorded on the com-
puter contains all playing channels except the
playback from the computer.
Live Performance – Computer playback software
like Ableton Live is being mixed to the mains
with other stereo sources such as synths, sam-
plers, turntables, and CD-DJ players. The USB
thru switch is engaged, so everything will be
fed to the computer for recording the entire set
with Ableton Live.
To From
Computer input 1 Left mix of channels including
any audio from computer
(thru switch in)
or
Left mix of channels without
audio from computer
(thru switch out)
Computer input 2 Right mix of channels including
any audio from computer
(thru switch in)
or
Right mix of channels without
audio from computer
(thru switch out)
From To
Computer output 1 Main mix L
Computer output 2 Main mix R
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