Specifications
4
REAR PANEL FEATURES
CMA30, CMA60, & CMA120 Rear Panels
directxfmr
chime
level
send/return
auto mutecompressor
amp
in
pre
out
line
out
rec
out
remote
level
stacking in
+
4
com
8
25V
50V
70V
~
115/230V AC 50/60 Hz 375 VA
BIAMP SYSTEMS
an affiliate of
Rauland-Borg Corp
threshold adjust
phantom pwr
auto mute
manual mute
mute
level
-40
-20
priority
line
mic
on
off
channel 1channel 2channel 3channel 4channel 5channel 6
phantom pwr
auto mute
manual mute
mute
level
-40
-20
priority
line
mic
on
off
phantom pwr
auto mute
manual mute
mute
level
-40
-20
priority
line
mic
on
off
phantom pwr
auto mute
manual mute
mute
level
-40
-20
priority
line
mic
on
off
phantom pwr
auto mute
manual mute
mute
level
priority
line
mic
on
off
tel
phantom pwr
auto mute
manual mute
mute
level
-40
-20
priority
line
mic
on
off
USE ONLY WITH
250V FUSE
+10V c
mute/
chime
120watt
output
min
out
min
max
trim
n
o
m
i
n
a
min
max
trim
n
o
m
i
n
a
min
max
trim
n
o
m
i
n
a
min
max
trim
n
o
m
i
n
a
min
max
trim
n
o
m
i
n
a
min
max
trim
n
o
m
i
n
a
min
max
-40
-20
min
max
+ + + + + +
R
C
E158021
R
LISTED 2 Z 91
COMMERCIAL
AUDIO EQUIP
3.15A -230V
6.3A - 115V
CMA350 Rear Panel
direct
xfmr
chime
level
send/return
auto mutecompressor
amp
in
pre
out
line
out
rec
out
remote
level
4 com
8
25V
50V
70V
~
115/230V AC 50/60 Hz 700 VA
threshold adjust
channel 1
channel 2
channel 3
channel 4
channel 5
channel 6
channel 1channel 2channel 3channel 4channel 5channel 6stacking in
phantom pwr
auto mute
manual mute
mute
level
-40
-20
priority
line
mic
on
off
phantom pwr
auto mute
manual mute
mute
level
priority
line
mic
on
off
tel
phantom pwr
auto mute
manual mute
mute
level
-40
-20
priority
line
mic
on
off
USE ONLY WITH
250V FUSE
+10V
c
mute/
chime
350 watt
output
WARNING:
do not change
AC voltage switch
when power is on.
min
out
min
max
trim
n
o
m
i
n
a
l
min
max
trim
n
o
m
i
n
a
l
min
max
trim
n
o
m
i
n
a
l
min
max
-40
-20
min
max
+
+
+
+
+
+
R
C
E158021
R
LISTED 2 Z 91
COMMERCIAL
AUDIO EQUIP
3.15A -230V
6.3A - 115V
phantom pwr
auto mute
manual mute
mute
level
-40
-20
priority
line
mic
on
off
trim
n
o
m
i
n
a
l
min
max
phantom pwr
auto mute
manual mute
mute
level
-40
-20
priority
line
mic
on
off
trim
n
o
m
i
n
a
l
min
max
phantom pwr
auto mute
manual mute
mute
level
-40
-20
priority
line
mic
on
off
trim
n
o
m
i
n
a
l
min
max
115
+
CMA350
BIAMP SYSTEMS
Portland, Oregon
an affiliate of Rauland-Borg Corp.
Power Entrance:
This receptacle accepts a 3-prong AC power
cord.
WARNING: DO NOT REMOVE OR DEFEAT THE GROUND PRONG, AS
THIS CONSTITUTES A SHOCK HAZARD.
The removable lower portion
of the receptacle holds the AC fuse. NOTE:
See AC Fuse on
page 7 for replacement by qualified personnel.
A chassis ground
post is provided (next to the receptacle) for system grounding.
Power Selector Switch
(model CMA350 only)
:
This switch
selects either 115 Volt or 230 Volt AC operation for model CMA350
(see Modifications on pg. 7). Power Selector Switches for other
models are on the underside of the chassis.
Output Selector:
This switch selects either direct output or
transformer coupled output from the amplifier. On models CMA60,
CMA120, & CMA350 direct output is from the 4
Ω
terminal. On
model CMA30, direct output is from the 8
Ω
terminal.
Output Terminals:
These screw terminals provide connection for
speaker loads (4
Ω
, 8
Ω
, 25V, 50V, 70V, or 100V) at the amplifier
output. NOTE:
100V output is an export model option only.
WARNING: THE LOUDSPEAKER OUTPUTS POSE A RISK OF HAZARDOUS
ENERGY. LOUDSPEAKER CONNECTIONS MUST BE MADE PROPERLY.
THE OUTPUT TERMINAL COVER MUST BE INSTALLED WHEN THE DEVICE
IS ENERGIZED.
Chime Level:
This control adjusts the volume level of the chime
tone (see Mute/Chime on next page). To turn the chime tone off
completely, set this control to the fully counter-clockwise position.
Send/Return:
This 3-conductor TRS 1/4" Phone jack provides an
insert point for signal processing or remote control devices. It is
wired with Tip as send, Ring as return, and Sleeve as ground.
Send/Return is after Stacking In, Loudness, & Tone, but before
Compressor, Master Level, & Low Cut. Send/Return is a switching
jack, which interrupts the signal flow only when a plug is inserted.