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Ө PHANTOM power switch
These switches turn the internal phantom power supply
on and off in 4 channel groups. Turning the switch on
applies 48 V DC across pins 2 & 3 of the XLR-type
input channel
connectors.
Be sure to turn the power
supply OFF when it is not in use. Since phantom power is.
not normally required for high-impedance sources, the
phone jacks are not connected to the power supply.
IMPORTANT:
The phantom power supply has no effect
on balanced dynamic microphones or line sources, even if
left оп, However,
unbalanced sources, or transformers
with earthed center taps are liable to hum or even dam-
aged if connected to the phantom power supply when it is
on.
@ MASTER INSERT IN/OUT connectors
As with the input channel
inserts, a single unbalanced
TRS jack permits access to the signal path between the
master mix buss and the master fader, with an automatic
closing device if this connector is not used. This is ideal
for inserting devices such as graphic equalizers (to reduce
feedback
or
"customize"?
the sound
of an individual
monitor mix) or a limiter to prevent monitor overload.
MASTER
INSERT
OUT
MASTER
INSERT
IN
© SUB IN (MASTER, AUX, CUE) connectors
These
unbalanced
input
connectors
allow
а second
monitor mixing console to be "cascaded" with the main
monitor
console
in situations
where
more
inputs are
needed
(for example, a big band, orchestra, or a band
using multiple keyboards and complex drum micing). The
master sub, auxiliary sub, and Cue Sub Inputs are con-
nected with the corresponding Outputs of the second
console, enabling the master controls of the main console
to control both units.
If two MC2408M's were used in this way, a total of 48
inputs would
be available—sufficient for virtually any
conceivable situation.
@ AUX IN, AUX OUT connectors
These
unbalanced
input/output jacks, operating at the
professional level of +4 dB, are provided to allow effects
devices to be patched in. With an echo unit, for example,
they could be considered as echo send/return points, with
the levels adjusted by the controls on the front panel.
The AUX OUTs can also be used to supply two additional
monitor mixes, as AUX OUT controls are incorporated .
into each Input Channel. This feature could, for example,
feed a stereo tape deck, or provide monitor outputs for an
operator's speaker or a dressing room speaker.
Ө COMM (IN, TB OUT) connectors
The COMM
IN jack enables the foldback or talkback
output of the house PA console to be connected to the
MC monitor mixing console for communication between
the two engineers. In this case, the —50 dB switch would
need to be used to keep the signals compatible.
This input can also be used as a microphone input, e.g.,
for
communication
with
a
stage
manager,
lighting
director, or conductor. The —50 dB switch is not required
for this application. In either case, the communications
input would
be headphone monitored by the operator,
adjusting the level with the COMM
IN control on the
front panel.
The TB OUT jack enables the monitor operator's talkback
signal to be sent to the house PA console or other loca-
tion, thus completing a 2-way communications setup.
Ө CUE OUT connector
This unbalanced
output terminal supplies the signal for
the operator's monitor speaker system. When cascading
two monitor mixing consoles, it would be connected to
the CUE SUB IN jack of the main console. As it is rated at
*4 dB, it can feed another headphone monitoring system
for use by an assistant engineer, road manager, or even a
video director.
The level at this output is adjusted by the CUE/PHONES
level control on the front panel.
© CUE CONTROL connector
When
two
Yamaha
MC
monitor
mixing consoles are
cascaded
together,
connecting
the
CUE
CONTROL
terminals of both consoles, via a standard 1/4" jack cable,
allows operation of the INPUT CUE
or AUX
IN CUE
functions from either of the units.
This feature allows headphone monitoring of cue'd signals
by both the monitor engineer and an assistant if needed.
4) MASTER OUT connectors
Each master buss has an electrically balanced
XL R-type
output connector, to feed the monitor amplifier systems.
(D POWER
switch
Turning the switch on supplies power to the unit. The VU
meters illuminate to indicate power is on.
IMPORTANT: This switch should be OFF while connect-
ing the console to the mains.
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