Mackie ProFX12v2 Owner's Manual

Owner’

s Manual

This is a standard 3-prong IEC power connector.  

Connect the detachable linecord (included in the box 
with your mixer) to the power receptacle, and plug the 
other end of the linecord into an AC outlet. 

ProFXv2 Series mixers have a universal power supply 

that accepts any AC voltage ranging from 100 VAC to 240 
VAC. No need for voltage select switches. It will work 
virtually anywhere in the world. That’s why we call it a 
“Planet-Earth” power supply! It is less susceptible to 
voltage sags or spikes, compared to conventional power 
supplies, and provides greater electromagnetic isolation 
and better protection against AC line noise.

Disconnecting the plug’s ground pin is  
dangerous. Don’t do it.

Press the top of this rocker switch inwards to turn 

on the mixer. The front panel power LED will glow 
with happiness...or at least it will if you have the mixer 
plugged into a suitable live AC mains supply.

Press the bottom of this switch to put the mixer into 

standby mode. It will not function, but some circuits are 
still live. To remove AC power, either turn off the AC 
mains supply, or unplug the power cord from the mixer 
and the AC mains supply.

As a general guide, you should turn on the 
mixer first, before any external power  
amplifiers or powered speakers, and turn it off 

last. This will reduce the possibility of any turn-on, or 
turn-off thumps in your speakers. 

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The built-in USB interface allows for some  

powerful and flexible routing. It is a 2x2 interface  
allowing you to record two streams from the mixer, or to 
input stereo playback from a computer and route it to 
nearly any output or pair of outputs on the mixer 
[ProFX16v2, ProFX22v2 and ProFX30v2].

The ProFX8v2 and ProFX12v2 USB return 
only goes to main L/R via the USB input level 
control.

The USB routing capabilities are as follows:

(1) Stereo channel 15/16 (on the ProFX16v2),  

21/22 (on the ProFX22v2) and 29/30 (on the 
ProFX30v2) features a USB button, so one may route 
computer output (such as iTunes

®

) down the last  

stereo channel of the board. This stereo signal may  
then be EQ'd, sent to auxiliaries (i.e. to feed monitors, 
headphones or effects) and is routable to mains  
and/or subgroups via the fader routing features that  
are available on all other channels. In short, this signal 
may be sent to nearly any desired output or pair of 
outputs. Additionally, the gain knob at the top of this 
channel strip adjusts the USB input level to the mixer  
to achieve an optimal signal level.

(2) The 2-Track Return section [ProFX16v2, 

ProFX22v2, ProFX30v2] features a switch to select 
either a “Tape” source (such as an iPod

®

 connected  

via RCA cables) or the USB signal from a computer 
(playing Windows Media Player

®

 files, for example)  

may be routed to the main bus. This section also  
features an input level adjustment for fading house  
music up and down between bands, at a house  
of worship, or any other event where this may  
be necessary.