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Rane MA 4, Datasheet

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Data Sheet-8

MA 4

MULTICHANNEL AMPLIFIER

All features & specifications subject to change without notice. 2-2014

©Rane Corporation  10802 47th Ave. W.,  Mukilteo WA 98275-5000 USA  TEL 425-355-6000  FAX 425-347-7757  WEB rane.com

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 k

Ω 

pot

HIGH-PASS

20Hz

40Hz

60Hz

80Hz

ON

4

+ – + – + – + –

+ – + – + – +

REMOTE LEVEL

4

4

FLAG

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

+ –

+ –

+ –

+ –

INPUTS

MODE

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

4

3

2

1

ON

4

3

2

1

ON

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 k

Ω 

pot

HIGH-PASS

20Hz

40Hz

60Hz

80Hz

ON

4

+ – + – + – + –

+ – + – + – +

REMOTE LEVEL

4

4

FLAG

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

+ –

+ –

+ –

+ –

INPUTS

MODE

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

4

3

2

1

ON

4

3

2

1

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

+

–

+

–

+

–

+

–

VR 2

VOLUME

REMOTES

ZONE 1

ZONE 2

ZONE 3

ZONE 4

SOURCE 4

SOURCE 3

SOURCE 2

SOURCE 1

FOR CONTINUED GROUNDING 

PROTECTION DO NOT REMOVE

THIS SCREW. 

FOR CONTINUED GROUNDING 

PROTECTION DO NOT REMOVE

THIS SCREW. 

MASTER

MA 4

SLAVE

MA 4

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. The 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. The 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).

Summary of Contents for MA 4

Page 1: ...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 de...

Page 2: ...0 40 60 80 Hz dipswitch select Load sensing 2 to 16 normal Green Load indicator on Low load detect Below 2 is low Green Load indicator flashing High load detect Above 16 is high Green Load indicator o...

Page 3: ...Hz HIGH PASS filters are provided The setting affects all channels Filters are 12 dB per octave Butterworth alignment 8 Each channel is set for MASTER or SLAVE operation Master channels write Fault Fl...

Page 4: ...L U A F D A O L Y D A E R P X E B d 3 B d 6 B d 2 1 B d 4 2 T I M I L P M O C T L U A F D A O L Y D A E R P X E 4 H C 3 H C 2 H C 1 H C P S D T S O H D N G Y T I V I T I S N E S 4 H C 3 H C 2 H C 1 H...

Page 5: ...2 Z H 0 4 z H 0 6 z H 0 8 E D O M V 8 0 O T V 0 0 Y B D N A T S V 0 3 O T V 2 2 E T U M V 5 5 O T V 2 4 N O 1 M 2 M 3 M 4 M 1 M 2 M 3 M 4 M E S N E S Y L P P U S 5 2 R E T I M I L K A E P DETECT RMS...

Page 6: ...selection of 20 40 60 or 80 Hz highpass 2nd order Butterworth filters Load sensitive limiter circuits shall prevent clipping and the associated loss of speech intelligibility A front panel LED shall i...

Page 7: ...Rane VR 2 or 20 k pot HIGH PASS 20Hz 40Hz 60Hz 80Hz ON 4 REMOTE LEVEL 4 4 FLAG 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 INPUTS MODE 13 22 dBu...

Page 8: ...P 4 3 2 1 1 2 3 4 Vr Vc Vr Vc Vr Vc Vr Vc INPUTS MODE 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 E...

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