Mackie DFX 12 Owner's Manual - Page 14

Master Features, Stereo Graphic EQ

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MASTER SECTION FEATURES DFX·12 12 CHANNEL INTEGRATED LIVE SOUND MIXER +12 +12 POWER PHANTOM POWER +48V 0 0 LEFT RIGHT CLIP 16 -12 -12 60 250 1K 3.5K 12K MAIN AUX 1 EQ BYPASS DIGITAL STEREO EFFECTS PROCESSOR U REVERSE OO +6 (EFFECTS TO STAGE MONITOR) GATE CATHEDRAL LG. HALL BYPASS LEVEL SET DELAY 1 DELAY 2 DELAY 3 DELAY 4 MD. HALL LG. PLATE MD. PLATE SM. ROOM OO U +6 AUX 1/MON SEND OO U +6 AUX 2/EFX SEND CHORUS FLANGE PHASER SPRING VOCAL ELIMINATOR BREAK SWITCH (MUTES ALL MIC CHANNELS) 12 8 4 NORM 0 4 8 12 16 20 24 30 0 = +4dBu OO MAX PHONES AUX 1 RETURN MUTE AUX 2/EFX RETURN MUTE CD/TAPE RETURN MUTE MAIN MIX LEFT RIGHT dB dB dB dB 10 10 10 10 5 5 5 5 U U U U 5 5 5 5 10 10 10 10 20 20 20 20 30 30 30 30 40 40 40 40 50 50 50 50 60 60 60 60 OO OO OO OO 14 Before you read this chapter, you might want to look at the rather lovely channel strip features on the previous page. 27. STEREO GRAPHIC EQ This equalizer is used to shape the frequency spectrum of the main mix or monitor mix. It is the last thing in the signal chain before the MAIN MIX (34) faders and the MAIN OUT (5) jacks. Each EQ slider controls a different section of the audio frequency range. Moving a slider up or down will boost or cut the output levels of signals around the slider's center frequency. By setting all the EQ sliders to zero (center) you'll effectively remove it from the signal path. The following steps show how the equalizer can be used to reduce feedback: 1. Set the EQ sliders to zero (center) while the band plays on. 2. Set the channel GAIN (16) levels, using the LEVEL SET LED (17) and adjust the channel faders for a nice mix. 3. Slowly turn up the MAIN MIX (34) faders until feedback just begins to occur. BE CAREFUL! Feedback can occur quickly and become very LOUD, very fast. 4. Cut the appropriate EQ slider until the feedback stops. Here are some general suggestions on using the EQ: For better vocal sound, set the 250, and 12K sliders to +5. Note: Make sure the singer is within 3 to 6 inches of the microphone. No amount of EQ can save a wandering minstrel. For more presence, set the 3.5K slider to +5. To warm up the overall sound, set the 1K slider to -5. REMEMBER, LESS IS BETTER.

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14
MASTER SECTION FEATURES
Before you read this chapter,
you might want to look at the
rather lovely channel strip fea-
tures on the previous page.
27. STEREO GRAPHIC EQ
This equalizer is used to shape
the frequency spectrum of the
main mix or monitor mix. It is
the last thing in the signal chain
before the MAIN MIX (34) faders
and the MAIN OUT (5) jacks.
Each EQ slider controls a dif-
ferent section of the audio
frequency range. Moving a slider
up or down will boost or cut the
output levels of signals around
the slider’s center frequency. By
setting all the EQ sliders to zero
(center) you’ll effectively remove
it from the signal path.
The following steps show how
the equalizer can be used to
reduce feedback:
1.
Set the EQ sliders to zero
(center) while the band
plays on.
2.
Set the channel GAIN (16)
levels, using the LEVEL
SET LED (17) and adjust
the channel faders for a
nice mix.
3.
Slowly turn up the MAIN
MIX (34) faders until feed-
back just begins to occur.
BE CAREFUL! Feedback
can occur quickly and be-
come very LOUD, very fast.
4.
Cut the appropriate EQ slider
until the feedback stops.
Here are some general sugges-
tions on using the EQ:
For better vocal sound, set the
250, and 12K sliders to +5.
Note: Make sure the singer
is within 3 to 6 inches of the
microphone. No amount of
EQ can save a wandering
minstrel.
For more presence, set the 3.5K
slider to +5.
To warm up the overall sound,
set the 1K slider to –5.
REMEMBER, LESS IS BETTER.
dB
30
20
10
O
O
40
50
5
5
U
60
10
dB
30
20
10
O
O
40
50
5
5
U
60
10
dB
30
20
10
O
O
40
50
5
5
U
60
10
dB
30
20
10
O
O
40
50
5
5
U
60
10
dB
30
20
10
O
O
40
50
5
5
U
60
10
dB
30
20
10
O
O
40
50
5
5
U
60
10
MAIN MIX
LEFT
RIGHT
AUX 2/
EFX
RETURN
CD/TAPE
RETURN
AUX 1
RETURN
AUX 2
/
EFX
SEND
AUX 1/MON SEND
DFX
·
12
12 CHANNEL INTEGRATED LIVE SOUND MIXER
DIGITAL STEREO
EFFECTS PROCESSOR
LEVEL SET
DELAY 1
BYPASS
(EFFECTS TO
STAGE MONITOR)
REVERSE
GATE
CATHEDRAL
LG. HALL
MD. HALL
LG. PLATE
MD. PLATE
SM. ROOM
DELAY 2
DELAY 3
DELAY 4
CHORUS
FLANGE
PHASER
SPRING
VOCAL
ELIMINATOR
BREAK
SWITCH
(MUTES ALL MIC CHANNELS)
BYPASS
EQ
MAIN
AUX 1
–
12
+12
0
12K
3.5K
–
12
+12
0
60
250
1K
16
12
8
4
0
4
8
12
16
20
24
30
0 = +4dBu
CLIP
LEFT
RIGHT
PHANTOM POWER
+48V
POWER
NORM
PHONES
dB
30
20
10
O
O
40
50
5
5
U
60
10
U
O
O
+6
O
O
MAX
U
O
O
+6
U
O
O
+6
MUTE
MUTE
MUTE