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Front & Rear Panels
MG12/4FX
21
Rear Input/Output Section
1 Channel Input Jacks
• MIC jacks (CHs 1 to 4, 5/6, 7/8)
These are balanced XLR-type microphone input jacks
(1:Ground; 2:Hot; 3:Cold).
• LINE jacks (CHs 1 to 4)
These are balanced TRS phone-type line input jacks
(T:Hot; R:Cold; S:Ground).
You can connect either balanced or unbalanced phone
plugs to these jacks.
Where an input channel provides both a MIC
INPUT jack and a LINE INPUT jack, you may use
either one of these jacks but you may not use both
at the same time. Please connect to only one of
these jacks on each channel.
2 INSERT I/O Jacks
Each of these jacks is positioned between the equalizer
and fader of the corresponding input channel (CHs 1 to
4). These jacks can be used to independently connect
these channels to devices such as graphic equalizers,
compressors, and noise filters. These are TRS (tip, ring,
sleeve) phone jacks that support bidirectional operation.
Connection to an INSERT I/O jack requires a spe-
cial separately-sold insertion cable such as illus-
trated below.
The signal output from the INSERT I/O jacks is
reverse-phased. This will not be a problem if connecting
the jack to an effector. If using the jack to output to an
external device, however, please be aware of possible
phase conflicts with other signals.
3 Channel Input Jacks
These are unbalanced stereo line input jacks. Two jack
types are provided: phone type (CHs 5/6 to 11/12) and
RCA pin type (CHs 9/10, 11/12).
Where a channel provides both a phone jack and
an RCA pin jack, you may use either one of these
jacks but you may not use both at the same time.
Please connect to only of these jacks on each chan-
nel.
4 GROUP OUT (1, 2) Jacks
These are impedance-balanced phone-type output jacks
that output the Group 1-2 signals. Use these jacks to con-
nect to the input jacks of an MTR, external mixer, or
other such device.
5 ST OUT (L, R) Jacks
These jacks deliver stereo output of the mixed signal.
You use these jacks, for example, to connect to the
power amplifier driving your main speakers. You also
use these jacks when you wish to record the signal utiliz-
ing the level control applied by the ST fader in the Mas-
ter Control section.
• XLR jacks
XLR-type balanced output jacks.
• LINE jacks
TRS phone-type balanced output jacks.
6 C-R OUT Jacks
Use these stereo phone-type output jacks to connect to your
monitor system.
The signal monitored by these jacks is selected by
the settings of the ST-GROUP toggle switch, the
2TR IN switch, and the PFL switches on the input
channels.
A1
6B3
C
278
54
90
NOTE
NOTE
To the INSERT I/O jack
To the input jack of the external processor
To the output jack of the external processor
Ring
Sleeve
Tip
Sleeve
Tip
NOTE
NOTE