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MGP16X/MGP12X Owner’s Manual
18
Channel Control Block
Mono input section
Mono and stereo input section
Stereo input section
q +48V switch and indicator
This switch toggles phantom power on and off. When this
switch is turned on ( ), the mixer supplies DC +48V
power to pins 2 and 3 of all XLR input jacks. Turn this switch
on when using one or more phantom-powered condenser
microphones. The indicator lights when it is turned on.
CAUTION
• Be sure to leave this switch off ( ) if you do not need
phantom power. Humming or damage may result if you
connect to an unbalanced device or to an ungrounded
transformer while this switch is on.
• When turning the switch on, make sure that only a con-
denser microphone is connected to the XLR input jacks.
Devices other than condenser microphones may be
damaged if connected to the phantom power supply.
This precaution does not apply to balanced dynamic
microphones, however, as these will not be affected by
phantom power.
• To prevent damage to speakers, be sure to turn off power
amplifiers (or powered speakers) before turning this
switch on or off. It’s also a good idea to turn the mixers
output controls - the STEREO master and GROUP (1-2,
3-4) faders - all the way down when turning phantom
power on. Neglect of these precautions may result in
large noise bursts that may damage your equipment,
your ears, or both.
w 26dB (PAD) switch
When this switch is turned on ( ), the input signal from
the MIC/LINE jack of the mono channel is attenuated by
26dB.
Turn this switch off ( ) if you’ve connected a microphone
or other device with a low input level to the channel. Turn it
on ( ) if you’ve connected a line-level device.
e (High Pass Filter) switch
Turning this switch on ( ) will apply a high-pass filter that
attenuates frequencies below 100Hz in the signal by a slope
of 12dB/octave.
r DUCKER switch
When this switch is turned on ( ), the volume of the stereo
channels is automatically lowered when a signal exceeding a
certain level is input to the SOURCE channel (MGP16X:
CH8, MGP12X: CH4). You can use this switch, for example,
when you want to have the volume of background music
automatically lowered when making an announcement on the
microphone. For effective use of this switch, see Step 6 on
page 14. The switch lights when it is turned on.
NOTE
You can adjust the attenuation of the Ducker function in the
detailed setting mode (see column on page 21).
q
u
o
!0
!2
!5
!7
!6
!1
!3
!8
!5
!7
!6
!8
!5
!7
!6
!8
!4
o
!0
!2
!1
o
t
!0
!2
!1
!3
!4
!3
!4
e
w
y
q
e
y y
r
i
Mono
channels
1–8 (MGP16X),
1–4 (MGP12X)
Mono/stereo
channels
9–12 (MGP16X),
5–8 (MGP12X)
Stereo
channels
13–16 (MGP16X),
9–12 (MGP12X)