Yamaha MG12/4, MG16/4 Rear Input/Output Section

Front & Rear Panels

MG16/4, MG12/4

1Channel Input jacks

•MIC jacks (MG16/4: CHs 1 to 8, 9/10, 11/12. MG12/4:

CHs 1 to 4, 5/6, 7/8)

These are balanced XLR-type microphone input jacks

(1:Ground; 2:Hot; 3:Cold).

•LINE jacks (MG16/4: CHs 1 to 8. MG12/4: 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.

2INSERT I/O Jacks

Each of these jacks is positioned between the equalizer and

fader of the corresponding input channel (MG16/4: CHs 1 to 8;

MG12/4: CHs 1 to 4). These jacks can be used to indepen-

dently connect these channels to devices such as graphic equal-

izers, 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 con-

necting the jack to an effector. If using the jack to out-

put to an external device, however, please be aware

of possible phase conﬂicts with other signals.

3Channel Input jacks

These are unbalanced stereo line input jacks. Two jack types

are provided: phone type (MG16/4: CHs 9/10 to 15/16;

MG12/4: CHs 5/6 to 11/12) and RCA pin type (MG16/4: CHs

13/14, 15/16; MG12/4: 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 channel.

4GROUP OUT (1, 2) Jacks

These are impedance-balanced phone-type output jacks that

output the Group 1-2 signals. Use these jacks to connect to the

input jacks of an MTR, external mixer, or other such device.

5ST 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 utilizing the level control applied by

the ST fader in the Master Control section.

•XLR jacks

XLR-type balanced output jacks.

•Line jacks

TRS phone-type balanced output jacks.

6C-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.

7SEND Jacks

•AUX1, AUX2

These are impedance balanced phone-type output jacks.

These jacks output the signals from the AUX1 and AUX2,

respectively. Use these jacks to output these signals to an

effector or a cue box or other such monitor system.

Rear Input/Output Section

4 15

6 37 8

AB

9 0 2

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

MG12-16_E.book Page 22 Monday, May 26, 2003 1:14 PM