Mackie ProFX8 User Manual

Page of 36
12
ProFX8 and ProFX12
Pr
oFX8 and Pr
oFX12
Rear Panel Features
1. POWER CONNECTION
This is a standard 3-prong IEC AC power connector. 
Securely connect the supplied detachable linecord in 
here, and plug the other end into an AC outlet. The 
mixer has a universal power supply that can accept any 
AC voltage ranging from 100 VAC to 240 VAC. No need 
for voltage select switches or step-up or step-down 
transformers, it will work virtually anywhere in the 
world. It is less susceptible to voltage sags or spikes 
than conventional power supplies, and provides greater 
electromagnetic isolation and better protection against 
AC line noise.
2. FUSE
The ProFX mixer is fused for your (and its own) 
protection. If you suspect a blown fuse, disconnect the 
power cord, pull this fuse drawer out and replace the 
fuse with exactly the same type and rating.
If two fuses blow in a row, something is very 
wrong, and you must stop using the mixer. 
Please call our toll-free number 1-800-898-
3211 from within the U.S. (or call the distributor in your 
country) and fi nd out what to do.
3. POWER SWITCH
Press the top of this rocker switch to turn on the 
mixer. The front panel power LED [33] 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 turn off the mixer, 
whenever you feel that this would be a safe thing to do. 
As a general guide, you should turn on your 
mixer fi rst, before any external power ampli-
fi ers or powered speakers, and turn it off last. 
This will reduce the possibility of any turn-on or turn-
off thumps in your speakers. 
MAIN
RIGHT
(BALANCED)
MAIN
LEFT
USB
(BALANCED)
DESIGNED BY MACKOIDS IN WOODINVILLE, WA, USA • MANUFACTURED IN CHINA
FABRIQUE EN CHINE • COPYRIGHT ©2008 • "MACKIE" AND THE RUNNING MAN FIGURE
ARE TRADEMARKS OF LOUD TECHNOLOGIES, INC. • PATENT PENDING.
POWER
ON
PROFESSIONAL MIC/LINE MIXER WITH FX
FUSE: T1.6AL AC250V
~100-240V 50/60 Hz 25W
THIS DEVICE COMPLIES WITH PART 15 OF THE FCC RULES AND THE ICES-003 FOR 
CANADA.  OPERATION IS SUBJECT TO THE FOLLOWING TWO CONDITIONS: (1) THIS 
DEVICE MAY NOT CAUSE HARMFUL INTERFERENCE, AND (2) THIS DEVICE MUST 
ACCEPT ANY INTERFERENCE RECEIVED, INCLUDING INTERFERENCE THAT MAY 
CAUSE UNDESIRED OPERATION.
MANUFACTURING DATE
SERIAL NUMBER
WARNING: 
TO REDUCE THE RISK OF FIRE OR ELECTRIC
SHOCK, DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR
MOISTURE.  DO NOT REMOVE COVER. NO USER SERVICEABLE
PARTS INSIDE. REFER SERVICING TO QUALIFIED PERSONNEL.
AVIS: 
RISQUE DE CHOC ELECTRIQUE — NE PAS OUVRIR
 
4. XLR MAIN OUTS 
These XLR connectors provide stereo line-level sig-
nals from the main mix. Connect these to the balanced 
inputs of the powered speakers, or the power amplifi er 
powering your main speakers.
The main mix is the sum of all active channels cur-
rently playing, including any 2-channel USB input from 
your computer. How much of a channel that is heard 
in the main mix, is determined by that channel’s fader 
[31].
The XLR outputs are 6 dB higher output than 
the 1/4" TRS main outputs [15]. Balanced 
connections offer better immunity to external 
noise (specifi cally, hum and buzz) than unbalanced 
connections. Because of this, it is the preferred inter-
connect method, especially where very long lengths of 
cable are being used.
5. USB PORT 
The USB serial I/O interface allows you to transfer 
digital audio to and from your computer.
The interface provides two audio outputs to your 
computer:
• 
Main mix output, left and right. These output 
signals are independent of any adjustments 
made to the main fader [48] and graphic EQ 
[37]. This allows you to easily record your live 
performance directly to your laptop.
• 
The USB thru switch [41] allows you to also 
include the output from your computer in your 
recording. See page 23 for more details of this 
switch.
The USB interface also lets you use your computer to 
playback two channels into the mixer:
• 
Left and right signals from your computer are 
added to the main mix. The USB input level  
control [40] allows you to adjust the level of 
the incoming audio from your computer being 
added to the main mix.  
See Appendix D on page 32 for more USB details, and 
also check out the block diagram on page 31. 
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