Data Sheet-8
MA 4
MULTICHANNEL AMPLIFIER
All features & specifications subject to change without notice. DOC 108152
©Rane Corporation 10802 47th Ave. W., Mukilteo WA 98275-5098 USA TEL 425-355-6000 FAX 425-347-7757 WEB www.rane.com
MA 4
ACN 001 345 482
100-240V
500 WATTS 50/60 Hz
COMMERCIAL
AUDIO
EQUIPMENT
24TJ
LISTED
R
C
US
MADE IN U.S.A.
RANE CORP.
Class 2 Wiring
OUTPUTS
Active Low Use Rane VR 2 or 20 kΩ pot
HIGH-PASS
20Hz
40Hz
60Hz
80Hz
ON
4+ – + – + – + – + – + – + – +
REMOTE LEVEL 4
4FLAG 3 2 1
FAULT
Vr Vc Vr Vc Vr Vc Vr Vc–
+ – + – + – + – + – + – + – + –
3 2 1
MASTER
SLAVE
COMP
4 3 2 1
1 2 3 4
+ – + – + – + –
Vr Vc Vr Vc Vr Vc Vr Vc
+ – + – + – + –
INPUTSMODE
For continued
grounding
protection
do not remove
screw
13
22
dBu
SENSITIVITY
4
3
13
22
dBu
SENSITIVITY
4
2
13
22
dBu
SENSITIVITY
4
1
13
22
dBu
SENSITIVITY
4
EXP ON
3
INT EXT
LOAD
2
INT EXT
LOAD
1
INT EXT
LOAD
4
INT EXT
LOAD
4321
ON
4321
ON
MA 4
ACN 001 345 482
100-240V
500 WATTS 50/60 Hz
COMMERCIAL
AUDIO
EQUIPMENT
24TJ
LISTED
R
C
US
MADE IN U.S.A.
RANE CORP.
Class 2 Wiring
OUTPUTS
Active Low Use Rane VR 2 or 20 kΩ pot
HIGH-PASS
20Hz
40Hz
60Hz
80Hz
ON
4+ – + – + – + – + – + – + – +
REMOTE LEVEL 4
4FLAG 3 2 1
FAULT
Vr Vc Vr Vc Vr Vc Vr Vc–
+ – + – + – + – + – + – + – + –
3 2 1
MASTER
SLAVE
COMP
4 3 2 1
1 2 3 4
+ – + – + – + –
Vr Vc Vr Vc Vr Vc Vr Vc
+ – + – + – + –
INPUTSMODE
For continued
grounding
protection
do not remove
screw
13
22
dBu
SENSITIVITY
4
3
13
22
dBu
SENSITIVITY
4
2
13
22
dBu
SENSITIVITY
4
1
13
22
dBu
SENSITIVITY
4
EXP ON
3
INT EXT
LOAD
2
INT EXT
LOAD
1
INT EXT
LOAD
4
INT EXT
LOAD
4321
ON
4321
ON
4
0
2
6
8
10
LEVEL
4
0
2
6
8
10
LEVEL
4
0
2
6
8
10
LEVEL
4
0
2
6
8
10
LEVEL
+ – + – + – + –
MASTER
MA 4
VR 2
VOLUME
REMOTES
ZONE 1 ZONE 2 ZONE 3 ZONE 4
SLAVE
MA 4
SOURCE 4
SOURCE 3
SOURCE 2
SOURCE 1
Advanced Application - Fault Reporting
If you wish to have an amplifier channel report a fault to a control system or back up amplifier, set it to Master. e Fault Flag is
held high (+5 volts) during normal operation and goes low (passive pull down) when a fault occurs. For information about Fault Flag
operation (applications and reported faults) see the Manual, page 3.
Remote Level Control inputs are provided for each channel. e Rane VR 2 or any 10k to 100 kΩ potentiometer may be con-
nected to these inputs.
References
1. D. Bohn, “Constant-Voltage Audio Distribution Systems,” RaneNote, (2000).
(13 pages)
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