Rear Panel Features; Power Connection; Fuse; Power Switch - Mackie ProFX12 Owner's Manual

Rear Panel Features

POWER
1
2
~100-240V 50/60 Hz 25W
FUSE: T1.6AL AC250V

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.
12
ProFX8 and ProFX12
3
ON
MAIN MAIN
RIGHT LEFT
(BALANCED) (BALANCED)
4
PROFESSIONAL MIC/LINE MIXER WITH FX
USB
5

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.
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
MANUFACTURING DATE
SERIAL NUMBER
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.
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.