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Effects Return Jack (EFT/RET)
The EFF/RET jack is provided to
connect an external effects
device to the MCX-106. When a
plug is inserted the internal
reverberation unit is automati-
cally switched out of the MCX-
106 circuitry, being replaced by
the external unit. This jack
should be connected to the out-
put of the external effects unit.
Nominal input level is —20dB
with an impedance of 50k ohms.
Effects Output Jack (EFF)
The EFF Out jack used in con-
junction with the EFF/RET Jack
allows use of an external effects
device in place of the internal
reverberation unit. The effects
out jack should be connected to
the input of the external effect
unit. Nominal output level is
—l0dB with an impedance of 600
ohms.
Program Output Jack -
(PGM)
The PGM Out jack is provided
for connection to external equal-
izers and/or power amps, deriv-
ing its signal prior to the internal
GEQ and power amp. Nominal
output level is +4dB with an
impedance of 600 ohms.
Graphic Equalizer Input Jack
(GEQ)
The GEQ input jack allows the
graphic equalizer to be used in-
dependently of the MCX-106
with other external equipment,
or the internal power amplifier
and the graphic equalizer with
external equipment. When a
plug is inserted, the main mix
from the program buss is discon-
nected from the graphic equal-
izer and the power amplifier.
The nominal input level is —4dB
with an input impedance of 50k
ohms.
Power Amplifier Input Jack
(PWR)
The PWR Amp input jack allows
the internal power amplifier to
be used with external equip-
ment. When a plug is inserted,
the power amp is automatically
disconnected from the MCX-106
mixer section. The nominal in-
put level is +4dB with an input
impedance of 10k ohms.
Program Buss Link Jack
Fold Back Buss Link (FB)
Reverb/Effects Buss Link Jack
Buss Link Jacks
The buss link provides direct
access to the PGM, FB, and ef-
fects mixing busses, and is pro-
vided for easy input expansion
with additional MCX-106 units
or other auxiliary equipment.
All jacks have an input level of
+4dB with an impedance of 22k
ohms.
- Foldback Output Jack (FB)
This jack is for connection to
external power amplifiers and/
or equalizers for the on-stage
monitoring system. Nominal
output level is +4dB with an
impedance of 600 ohms. If the
internal power amp and equal-
izer are to be used for the on-
stage monitor system, the FB
output should be connected to
the GEQ input jack.
- Graphic Equalizer Output Jack
(GEQ)
This jack allows the MCX-106
and the internal graphic equal-
izer to be used with an external
power amplifier, or in conjunc-
tion with the GEQ in jack, to be
used independently of all other
MCX-106 circuitry. Nominal
output level is +4dB with an
impedance of 600 ohms
Power Switch (POWER) -
The power switch is a three-
position type with the middle
position being the "off" position.
The MCX-106 should be operat-
ed in the switch position which
produces the lowest amount of
system hum.
Speaker Jacks (SPEAKERS) -
The speaker outputs are stand-
ard 1/4" phone jacks wired in
parallel. Speaker cables (recom-
mend at least #18 gauge wire)
should be connected between
the MCX-106 and the speaker
systems prior to applying power
to the unit.
Caution - The MCX-106 should
never be operated into less than
a 2 ohm speaker load.
AC Power Cord
The power cord is the three-wire
type with proper grounding faci-
lities.
Caution - The ground pin should
not be removed under any cir-
cumstances. If the MCX-106
must be used without proper
grounding facilities, a suitable
grounding adapter should be
utilized. Operation of the MCX-
106 with proper grounding
techniques will result in less
system noise and greatly reduc-
ed shock hazard.
Warning - To avoid possible
equipment damage and or per-
sonnel injury, the fuse should
always
be
replaced
with
same
type and rating. Using improper
ty. The MCX-106 should always
be disconnected from AC outlet
prior to changing fuses. If fuse
repeatedly fails, the unit should
be referred to qualified service
personnel lor repair.
Earth Terminal (GND)
AC Fuse
Cord Wrap
The cord wrap is provided for
convenient storage of the power
cord when the MCX-106 is not in
use.
Caution - The power cord should
always be completely removed
from the cord wrap prior to
operation of the unit. This will
insure maximum cooling of the
MCX-106. For the same reason,
adequate clearance should be
maintained between the rear
panel and any other surface (4-6
inches should do). The vents on
the bottom and top of the MCX-
106 are also provided for convec-
tion cooling. These vents should
be kept clear and open. Failure to
do so may cause thermal shut-
down of the unit.
— 6 —
Front Panel, Patch Bay & Buss Link
(+4dB 22k )
(PGM) (+4dB )
(EFF) (+4dB 22k )
22k
Rear Panel
fuses will also void the warran-