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Data Sheet-7

MA 4

MULTICHANNEL AMPLIFIER

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

+

+

+

+

SOURCE 4

SOURCE 3

SOURCE 2

SOURCE 1

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

+5V

Advanced Application - Remote Turn-on

If you wish to operate an amplifier channel in low power standby with remote turn-on, set its rear panel switch to SLAVE. 

Ex5 volts connected to the FAULT FLAG holds the amplifier in standby. 

Floating the FAULT FLAG or connecting it to ground turns the channel on.

Basic Application

Don't let those extra connections and switches intimidate you.

The MA 4 is a high-quality general-purpose amplifier and connects like any other.

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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