Specifications
Manual-1
MA 4
MULTICHANNEL AMPLIFIER
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
OPERATORS MANUAL
Quick Start
Basic MA 4 operation is straightforward:
1. e universal switching power supply works with 100 to 240 VAC, 50/60 Hz.
2. Make sure the front panel power switch is o (the unit consumes 5 watts in standby mode).
3. Connect balanced inputs (rear panel).
4. Set SENSITIVITY controls to +22 (see why on page Manual-2) (rear panel).
5. Turn the Downward EXPander ON (rear panel).
6. Set COMPressor to 10 dB (rear panel).
7. Select the appropriate HIGH PASS lter frequency (20, 40, 60 or 80 Hz on rear panel).
8. Connect speaker loads (rear panel).
9. Make sure you have adequate ventilation around the unit – see Safety Instructions.
10. Turn ON the front panel power switch. You’re good to go!
Metering shows the status of the amplier at a glance (see page Manual-3). Headroom (with any load), dynamics control, Fault status
and Load status are indicated for each channel.
Extra Credit
For remote turn-on, fault reporting and back-up amplier operations, and remote level control wiring, see page Manual-4.
For FAULT FLAG operation (applications and reported faults), see page Manual-3.
MA 4
100-240V
50/60 Hz 500 WATTS
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
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
COMMERCIAL AUDIO
EQUIPMENT 24TJ
R
4321
ON
4321
ON
+
–
+
–
+
–
+
–
SOURCE 4
SOURCE 3
SOURCE 2
SOURCE 1
WEAR PARTS: This product contains no wear parts.
Installation
• No rear mounting hardware required.
• Allow adequate ventilation to keep ambient temperature around the amplier below 104˚F (40˚C).
• Fan cooled with inset intake on left side and inset exhaust on right side (no lter)
• Amplier heat load in Btu/hr at 100/240 VAC
º 10.2 / 13.3 Btu/hr All ampliers in standby
º 112.3 / 95.5 Btu/hr All ampliers on, no signal
º 167 / 139 Btu/hr All ampliers driven, pink noise, 12 watts avg. 4:1 crest
º Note: 1 watt x 3.413 = 1 Btu/hr.