MACKIE DFX12 - Manual (Page 8)

8
PATCHBAY (the intro and the outro)
This is where everything gets plugged in: microphones, line-level instruments, effects devices,
and the ultimate destination(s): PA system, monitors, headphones, and tape recorder, etc.
1. MIC
The DFX Mixer is equipped with rugged, low
noise, phantom-powered microphone pream-
plifiers, providing up to 50 dB of pounding
crystal-clear amplification. Their balanced cir-
cuitry rejects all manner of extraneous
interference. Professional condenser, dynamic,
and ribbon mics all sound excellent through
these XLR inputs.
You can plug in almost any kind of balanced
mic that has a standard XLR-type male mic
connector.
XLR balanced wiring:
Pin 1 = shield
Pin 2 = hot (+)
Pin 3 = cold (–)
The DFX Mixers provide +48 VDC phantom
powering on pins 2 and 3 of all the mono chan-
nels’ XLR MIC inputs (not the stereo channels).
This can be turned on or off using the PHANTOM
POWER (31) switch on the right side of the mixer.
DO NOT connect a line-
level device to a MIC input
with the phantom power
switched on. This could
damage the device. Use the
LINE IN (2, 3) jacks instead.
2. LINE IN (FOR MONO CHANNELS)
These inputs can accept 1/4" TRS balanced
and 1/4" TS unbalanced plugs from any line-
level instrument, effects device, or tape player.
The line inputs share circuitry (but not phan-
tom power) with the mic preamps, and can be
driven by virtually any line-level signal.
1/4" TS (Tip-Sleeve) unbalanced wiring:
Tip = hot (+)
Sleeve = shield
1/4" TRS (Tip-Ring-Sleeve) balanced
wiring:
Tip = hot (+)
Ring = cold (–)
Sleeve = shield
3. LINE IN (FOR STEREO CHANNELS)
These inputs can accept 1/4" TRS balanced
and 1/4" TS unbalanced plugs from any line-
level instrument, effects device, or tape player.
When connecting a stereo device (two
cords), use both the left (mono) input and the
right input.
When connecting a mono device (just one
cord), always use the left (mono) input and
plug nothing into the right input. A trick called
“jack normalling” causes the signal to appear
on both sides.
2
2
3 1
1
SHIELD
COLD
HOT
SHIELD
COLD
HOT
3
SHIELD
COLD
HOT
3
2
1
SLEEVE
TIP
TIP SLEEVE
TIP
SLEEVE
SLEEVE
TIP SLEEVE
TIP
RING
RING
TIP
SLEEVE RING
9/10 11/12 MAIN OUT
1
1
MON
L R
AUX SEND STEREO AUX
RETURN
LEFT
7/8 5/6
MIC MIC
4
MIC
3
MIC
2 1
MIC MIC
BAL/UNBAL
L
LINE IN
BAL/UNBAL
L
R R
BAL/UNBAL
LINE IN
L
LINE IN
L
R R
LINE IN
BAL/UNBAL BAL/UNBAL
LINE IN
INSERT
BAL/UNBAL
LINE IN
INSERT
BAL/UNBAL
LINE IN
INSERT
BAL/UNBAL
LINE IN
INSERT
(MONO) (MONO) (MONO) (MONO)
2
CD/TAPE
IN
TAPE
OUT
L L
R R
(MONO)
EFX
FOOT
SWITCH
PHONES
2
EFX
RIGHT
BAL/UNBAL