Rolls MA255 Handleiding

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MA255

20 + 20 watt

Mixer/Amplifi er

Connection guide

Salt Lake City, Utah

09/11

• RCA Inputs for all channels, and Channel 4 -

3.5mm stereo input on the front panel.

• Volume controls for each Channel

• Low noise, effi cient operation

• Small compact size

• Class D high effi ciency amp

The MA255 is a very compact 20 + 20 watt high effi ciency amp

with a four channel stereo mixer built in. Left and Right stereo

speaker outputs. The unit is perfect for small speakers in small

environments. Great for in ceiling and projector applications where

small size is needed along with class D low radiated heat loca-

tions.

WARNING:

WARNING:

THE MINIMUM SPEAKER IMPEDANCE IS 4

OHMS EACH.

IF YOU CONNECT AND USE THE MA255 WITH A LOW-

ER SPEAKER IMPEDANCE THAN LISTED ABOVE

YOU WILL DAMAGE THE UNIT AND POSSIBLY OTHER

EQUIPMENT THAT IS CONNECTED TO THE MA255.

CH 4

CH 1

CH 2

CH 3CH 4

LEVEL

LEVEL

LEVEL

LEVEL

PS12

CLASS AMP

5 + 5 WATT MIX/AMP

LEFT

RIGHT

MA251

3.5mm

STEREO

+

+

-

-

BOTH OUTPUTS MUST BE USED

PHANTOM

CH 1

INPUT

CH 2

INPUT

CH 3

INPUT

POWER

LINE

OUT

ON - OFF

CH 2

MONO

INPUT

MUTE

R

R

R

L

L

L

CH 4

CH 1

CH 2

CH 3CH 4

LEVEL

LEVEL

LEVEL

LEVEL

LEFT

RIGHT

INPUT

+

+

SPEAKER OUTPUTS

LINE

OUT

CH 2

MONO

INPUT

MUTE

010

010

010

010

-

-

CH 1

INPUT

CH 2

INPUT

CH 3

INPUT

CH4

INPUT

PS24

AMPMIX+

20 + 20 WATT MIX/AMP

MA255

MADE IN USA

www.rolls.com

SPECIFICATIONS:

Line Input Impedance: 10K Ohms

Power Output: 20 Watts X 2 (4 Ohms)

Voltage Gain: 30 dB Line

Maximum Supply Voltage: 24 VDC

THD: .05% typical

EIN: 3 mV

Efficiency: 85%

Input Sensitivity: 28 mV

Bandwidth: 20Hz - 25 kHz +/- 3dB

+Size: 6.75" x 3.5" x 1.5"

Weight: 1 lb.

Product specificaties