Rane MA 4 Operator's Manual

1
3 Limit
6 Comp
12 Exp
24
dB Headroom

Quick Start

Basic MA 4 operation is straightforward:
1. The universal switching power supply works with 100 to 240 VAC, 50/60 Hz.
2. Make sure the front panel power switch is off (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 filter 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 amplifier 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 amplifier operations, and remote level control wiring, see page Manual-4.
For FAULT FLAG operation (applications and reported faults), see page Manual-3.
MADE IN U.S.A. MA 4
ACN 001 345 482
RANE CORP.
COMMERCIAL
For continued
AUDIO
grounding
protection EQUIPMENT
do not remove
screw
C
R
100-240V
50/60 Hz 500 WATTS LISTED
+ – + –
Installation
• No rear mounting hardware required.
• Allow adequate ventilation to keep ambient temperature around the amplifier below 104˚F (40˚C).
• Fan cooled with inset intake on left side and inset exhaust on right side (no filter)
• Amplifier heat load in BTU/hr at 100/240 VAC
º 347/463 BTU/hr All amplifiers in standby
º 3825/3245 BTU/hr All amplifiers on, no signal
º 5681/4820 BTU/hr All amplifiers driven, pink noise, 12 watts avg. 4:1 crest
º Note: The heat load of 1 watt is 116 BTU/hr
WEAR PARTS: This product contains no wear parts.
OPERATORS MANUAL
2 3 4
Fault 3 Limit Fault 3 Limit Fault 3 Limit
Load 6 Comp Load 6 Comp Load 6 Comp
Ready 12 Exp Ready 12 Exp Ready 12 Exp
24 24 24
dB Headroom dB Headroom dB Headroom
OUTPUTS
Class 2 Wiring
INT EXT INT EXT INT EXT INT EXT
4 3 2 1
LOAD LOAD LOAD LOAD
+ – + – + – + – + – + – + – + –
24TJ
US
+ – + – + – + – + – + – + – + –
+ – + –
ON
Fault
Load
Ready
MODE
HIGH-PASS
20Hz
FAULT REMOTE LEVEL
40Hz
FLAG 4
60Hz
80Hz
Active Low Use Rane VR 2 or 20 kΩ pot
MASTER COMP
SLAVE ON
4 3 2 1 Vr Vc Vr Vc
ON ON
1 2 3 4 1 2 3 4
4 3 2 1 1 2 3 4 EXP ON Vr Vc Vr Vc
MULTICHANNEL AMPLIFIER
INPUTS
4 3
3 2 1
SENSITIVITY SENSITIVITY
13
+ – + –
Vr Vc Vr Vc
22 4
dBu
+ – + –
Vr Vc Vr Vc
SOURCE 2
SOURCE 3
SOURCE 4
MA 4
MA 4
DIGITAL
AMPLIFIER
2 1
SENSITIVITY SENSITIVITY
13 13 13
+ – + –
22 4 22 4 22 4
dBu dBu dBu
+ – + –
SOURCE 1
Manual-