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Owner's Manual

ManualsBrandsMackie ManualsMusic MixerProFX12
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Owner’s Manual
Owner’s Manual
Front Panel Features
Connection Section
This is where to plug things in: microphones, line-
level instruments and effects, headphones, and the
ultimate destination for your sound: PA system, stage
monitors, effects processors, CD player/recorder, etc.
See Appendix B for further details and drawings of
the connectors to use with the ProFX mixer.
5. MIC INPUTS
We use phantom-powered, balanced microphone
inputs just like the big studio mega-consoles for
exactly the same reason: This kind of circuit is
excellent at rejecting hum and noise. You can plug
in almost any kind of mic that has a standard XLR
male mic connector.
Professional ribbon, dynamic and condenser mics will
all sound excellent through these inputs. The ProFX
mixer’s mic inputs will handle any kind of mic level
tossed at them without overloading. Be sure to perform
the gain-setting procedure mentioned on page 3.
PHANTOM POWER
Mostmodernprofessionalcondensermics
require phantom power which lets the mixer send
low-current DC voltage to the mic’s electronics through
the same wires that carry audio. (Semi-pro condenser
mics often have batteries to accomplish the same
thing.) “Phantom” owes its name to an ability to be
“unseen”bydynamicmics(ShureSM57/SM58,for
instance), which don’t need external power and aren’t
affected by it, anyway.
The ProFX mixer’s phantom power is globally
controlled by the phantom power switch [31]. (This
means that phantom power for all mic inputs is turned
on and off together.)
Never plug single-ended (unbalanced)
micro phones or ribbon microphones into the
mic input jacks if phantom power is on. Do
not plug instrument outputs into the mic input jacks
with phantom power on unless you know for certain it is
safe to do so.
6. LINE/HI-Z SWITCH
To connect a guitar directly to the mixer without
using a DI Box, press this switch in first; then connect
theoutputfromtheguitartochannel1's1⁄4"TRS
input [7]. The input impedance is optimized for direct
connection and high-frequency fidelity is assured.
Intheoutposition,channel1's1⁄4"TRSinput
becomes a line input just like the other mono line
inputs [8].
To use guitars or other instruments on other
channels, you will need to use an external DI box
first. Without the DI box – or if this switch is not
pressed in – guitars may sound dull and muddy.
7. LINE/HI-Z INPUT (Channel 1 only)
This1/4"jacksharescircuitry(butnotphantom
power) with the mic preamp and may be driven by
balanced or unbalanced sources.
Toconnectabalancedlinetothisinput,usea1⁄4"
Tip-Ring-Sleeve (TRS) plug.
Toconnectanunbalancedlinetothisinput,usea1⁄4"
mono (TS) phone plug or instrument cable.
This line-level input may also accept instrument-level
signalsifthehi-zswitch[6]ispressedin.Thisallows
you to connect guitars directly into channel 1 without
the need for a DI box.
TAPE
IN
ST RETURN MAIN OUT PHONES
FOOTSWITCH
TAPE
OUT
L
R
L
(UNBALANCED)
R
FX SEND
LINE IN 4
INSERT
BAL /
UNBAL
(MONO) (MONO) (MONO) (MONO)
LINE IN 7
LINE IN 8
BAL /
UNBAL
LINE IN 9
MIC MIC MIC MIC MIC MIC
L
R
(MONO)
LINE IN 5
LINE IN 6
BAL /
UNBAL
L
R
LINE IN 10
BAL /
UNBAL
L
R
LINE IN 11
LINE IN 12
BAL /
UNBAL
L
R
BAL /
UNBAL
L
R
BAL /
UNBAL
L
R
MON SEND
BAL /
UNBAL
BAL /
UNBAL
4
LINE IN 3
INSERT
BAL /
UNBAL
3
LINE IN 2
INSERT
BAL /
UNBAL
BAL /
UNBAL
2
LINE/HI-Z IN 1
INSERT
1 5/6 7/8 9/10 11/12
LINE
HI-Z
6
5
7
10
8 8 8
9 9 9
10 10 10
9