Rane MA3 Operator'S Manual Download Page 6

Manual-4

80 Hz Highpass Filters

Internal jumpers allow independently selecting 80 Hz,  

2

nd

-order Butterworth Filters for each channel. These Filters are 

useful when using small bookshelf speakers or small constant-

voltage distribution transformers.

The MA3 is shipped from the factory with the jumpers in the 

“no filter” position, as shown in the diagram below. Moving the 

jumper to the other position activates the 80 Hz filter. This op-

eration requires removing the top cover and should only be done 

by qualified service personel with the unit unplugged.

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

TF 410 & 407 Transformers

The MT 6 rack panel holds up to six transformers installed 

on the back, in any combination. Transformers are sold 

individually:

• The 

TF 407

 is a 40W, 

70.7 V

 transformer with 0.5 dB 

insertion loss at rated power and a frequency response of 50 

Hz to 15 kHz, ±1 dB.

• The 

TF 410

 is a 40W, 

100 V

 transformer with 0.5 dB insertion 

loss at rated power and a frequency response of 50 Hz to 15 

kHz, ±1 dB.

The MA3 is shipped with the internal 80 Hz High-

pass filters in the bypassed position.

DISTRIBUTED

DISTRIBUTED

DISTRIBUTED

70 V

70 V

70 V

ZONE 3

ZONE 2

ZONE 1

6

12

3

12

6

3

0

0

6

12

3

0

1

2

dB

MA 3

MULTICHANNEL

AMPLIFIER

3

CHANNEL OUTPUT HEADROOM

POWER

POWER

MT 6

MULTICHANNEL

TRANSFORMER

TF 410

LEFT

RIGHT

ZONE 2

OR

ZONE 1

OR

MONO

MONO

EXPAND

8 Ω

8 Ω

70 V

DISTRIBUTED

6

12

3

12

6

3

0

0

6

12

3

0

1

2

dB

MA 3

MULTICHANNEL

AMPLIFIER

3

CHANNEL OUTPUT HEADROOM

POWER

POWER

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