Data Sheet-1
MA 4
MULTICHANNEL AMPLIFIER
Features
• Universal voltage, power-factor-corrected power supply
• Very low inrush current
• 100 watts x 4 channels in 1U chassis
• Built-in load monitoring
• Remote fault reporting and redundancy switching
• Optional 4 channel 70/100 volt transformers in 1U chassis
• Adjustable high-pass filters and remote level controllable
• Advanced dynamics control adjusts for sensitivity setting, load Z
and temperature
DIGITAL
AMPLIFIER
dB Headroom dB Headroom dB Headroom dB Headroom
3
6
12
24
Limit
1
Comp
Exp
Fault
Load
Ready
3
6
12
24
Limit
2
Comp
Exp
Fault
Load
Ready
3
6
12
24
Limit
3
Comp
Exp
Fault
Load
Ready
3
6
12
24
Limit
4
ON
Comp
Exp
Fault
Load
Ready
MA 4
DATA SHEET
General Description
e 100 watt per channel, four-channel MA 4 amplifier
achieves unparalleled power density, reliability and features in a
space saving 1U, 19 inch rack mount chassis weighing only eight
pounds (3.6 kg). A universal-voltage switching power supply
provides near perfect Power-Factor, reducing peak currents to
⅓ compared to non power-factor-corrected supplies. A long list
of unique features ranging from constant load power to built in
automatic redundancy switching to advanced dynamics control,
qualify the MA 4 for the most demanding fixed installation
applications. e MA 4 excels in Music & Paging systems, small
conference rooms and speech reinforcement applications requir-
ing multiple amplifiers. Advanced dynamics control algorithms
adapt to changes in temperature, load impedance and sensitivity
setting. e result is a truly plug-and-play amplifier that ensures
excellent signal integrity at all times.
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
MT 4
MULTICHANNEL
TRANSFORMER
1234
MADE IN U.S.A.
RANE CORP.
MT 4
+
IN OUT
–
100V 70V COM
+
IN OUT
–
100V 70V COM
+
IN OUT
–
100V 70V COM
+
IN OUT
IN OUT IN OUT IN OUT IN OUT
–
100V 70V COM
+ –
100V 70V COM
+ –
100V 70V COM
+ –
100V 70V COM
+ –
100V 70V COM
Accessories
MT 4 Multichannel Transformer for 100V or 70.7V constant-voltage distribution. VR 2 Volume Remote can
control the level from
within each zone.
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