MACKIE ProFX12 - Manual (Page 21)

21
Owner’s Manual
Owner’
s Manual
Master Controls
31. PHANTOM POWER SWITCH
If the microphones need phantom power, press
in this switch to add phantom power to all the XLR
microphone inputs of the mixer. This lets the mixer
send low-current DC voltage to the mic’s electronics
through the same wires that carry audio. The LED will
turn on as a reminder that phantom power is engaged.
Most modern professional condenser mics require
phantom power. 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.
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.
32. POWER LED
This LED comes on when the mixer is plugged into
the AC mains supply, and the rear panel power switch
[2] is on.
If the LED does not turn on, make sure the
AC power is live, both ends of the power cord are
correctly inserted, the electricity bill has been
paid and the lights in town are on.
33. METERS
These meters have 2 columns of 12 LEDs each,
with dB markings from –30 to +15, and OL (overload
at +20 dBu). They indicate the stereo signal strength
of the main mix after the main fader [47].
Typically, these meters should be bouncing between
the “0” and the “+3” LEDs. It is okay if the OL LEDs light
occasionally, but if they light frequently or continuously,
turn down the main fader until they blink occasionally
or not at all.
Remember, audio meters are just tools to help assure
that the levels are “in the ballpark.” You don’t have to
stare at them (unless you want to).
MAIN
RIGHT
(BALANCED)
MAIN
LEFT
USB
(BALANCED)
8K 4K 2K 1K 500 250 125
15
15
10
10
5
5
0
15
15
10
10
5
5
0
TAPE
IN
ST RETURN MAIN OUT PHONES
FOOTSWITCH
PHONES
TAPE
OUT
L
R
L
(UNBALANCED)
R
STEREO GRAPHIC EQ
FX SEND
MID
2.5kHz
MID
2.5kHz
MID
2.5kHz
MID
2.5kHz
MID
2.5kHz
80Hz
LOW
U
+15 -15
U
+15 -15
U
+15 -15
LINE IN 4
INSERT
R L
LOW CUT
100 Hz
U
GAIN
MI
C GAIN
U +50
-20dB +30dB
4
12kHz
HI
MID
2.5kHz
80Hz
LOW
U
+15 -15
U
+15 -15
U
+15 -15
12kHz
HI
MID
2.5kHz
80Hz
LOW
U
+15 -15
U
+15 -15
U
+15 -15
12kHz
HI
MID
2.5kHz
80Hz
LOW
U
+15 -15
U
+15 -15
U
+15 -15
12kHz
HI
PAN
AUX U
+15 O O
MON
FX
U
+15 O O
R L
PAN
AUX U
+15 O O
MON
FX
U
+15 O O
R L
PAN
AUX U
+15 O O
MON
FX
U
+15 O O
R L
PAN
AUX U
+15 O O
MON
FX
U
+15 O O
80Hz
LOW
U
+15 -15
U
+15 -15
U
+15 -15
R L
LOW CUT
100 Hz
12kHz
HI
PAN
AUX U
+15 O O
MON
FX
U
+15 O O
80Hz
LOW
U
+15 -15
U
+15 -15
U
+15 -15
BAL /
UNBAL
(MONO) (MONO) (MONO) (MONO)
LINE IN 7
LINE IN 8
BAL /
UNBAL
LINE IN 9
R L
LOW CUT
100 Hz
GAIN
7/8 5/6
12kHz
HI
PAN
AUX U
+15 O O
MON
FX
U
+15 O O
80Hz
LOW
U
+15 -15
U
+15 -15
U
+15 -15
R L
MIC
GAIN
U +50
GAIN
MIC
GAIN
U +50
9/10
12kHz
HI
LEVEL
SET
LEVEL
SET
LEVEL
SET
LOW CUT
100 Hz
U
GAIN
MI
C GAIN
U +50
-20dB +30dB
LEVEL
SET
LEVEL
SET
LEVEL
SET
LOW CUT
100 Hz
U
GAIN
MI
C GAIN
U +50
-20dB +30dB
LOW CUT
100 Hz
U
GAIN
MI
C GAIN
U +50
-20dB +30dB
PAN
AUX U
+15 O O
MON
FX
U
+15 O O
GAIN
MIC MIC MIC MIC MIC MIC
80Hz
LOW
U
+15 -15
U
+15 -15
U
+15 -15
U
+20 -20
GAIN
U
+20 -20
R L
11/12 ST RTN FX RTN
EQ EQ EQ EQ EQ EQ EQ EQ
12kHz
HI
PAN
AUX U
+15 O O
MON
FX
U
+15 O O
U
+15
FX TO MON FX MASTER
U
+15 O O O O
dB
30
20
10
10
O O
40
50
5
5
U
60
dB
30
20
10
10
O O
40
50
5
5
U
60
dB
30
20
10
10
O O
40
50
5
5
U
60
dB
30
20
10
10
O O
40
50
5
5
U
60
dB
30
20
10
10
O O
40
50
5
5
U
60
dB
30
20
10
10
O O
40
50
5
5
U
60
dB
30
20
10
10
O O
40
50
5
5
U
60
dB
30
20
10
10
O O
40
50
5
5
U
60
dB
30
20
10
10
O O
40
50
5
5
U
60
dB
30
20
10
10
O O
40
50
5
5
U
60
dB
30
20
10
10
O O
40
50
5
5
U
60
dB
30
20
10
10
O O
40
50
5
5
U
60
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
PRESETS
FX PRESETS
01 BRIGHT ROOM
02 WARM LOUNGE
03 SMALL STAGE
04 WARM THEATER
05 WARM HALL
06 CONCERT HALL
13 DELAY 1 (300ms)
14 DELAY 2 (380ms)
15 DELAY 3 (480ms)
16 REVERB + DLY (250ms)
07 PLATE REVERB
08 CATHEDRAL
09 CHORUS
10 CHORUS + REV
11 DOUBLER
12 TAPE SLAP
MON MAIN
4
LINE IN 3
INSERT
3
BAL /
UNBAL
3
LINE IN 2
INSERT
2
BAL /
UNBAL
BAL /
UNBAL
2
LINE/HI-Z IN 1
INSERT
1 5/6 7/8 9/10 11/12
POWER
ON
0dB=0dBu
MAIN
METERS
OL
4
6
3
10
15
7
10
20
30
0
2
BREAK
(MUTES ALL CHANNELS)
PHANTOM
POWER
POWER
O O +10
U
TAPE LEVEL
O O +20
U
USB THRU
LINE
HI-Z
O O MAX
1
OL OL OL OL OL OL OL OL OL
OL
MAIN MIX
MON
EQ IN
BYPASS
R L
INPUT LEVEL
USB
MUTE
MUTE MUTE MUTE MUTE MUTE MUTE MUTE MUTE MUTE
48V
36
37 38
31
32
33
34
35 41 53 51
49
48
50
39
40
44 45 46 47
42 43
52