Rolls MA251 User Manual
MSRP: $150.00 USD
ROLLS
MIXER - AMP
5 + 5 Watts
-
-
-
-
5 + 5 WATT MIXER - AMPLIFIER
MADE IN USA
www.rolls.com
CLASS AMP
5 + 5 WATT MIX/AMP
LEVEL
CH 1
POWER
PHANTOM
ON - OFF
INPUT
CH 1
MA251
MA251
CH 4
INPUT
LEVEL
CH 2
INPUT
CH 2
L
R
010
LEVEL
LEVEL
CH 3CH 4
INPUT
CH 3
L
R
010
CH 3CH 4
LEVEL
LEVEL
OUT
LINE
L
R
INPUT
MONO
CH 2
MUTE
CH 2
MONO
INPUT
+
SPEAKER OUTPUTS
010
CH 2
LEVEL
STEREO
3.5mm
CH 4
RIGHT
010
CH 1
LEVEL
5 + 5 WATT MIX/AMP
CLASS AMP
MA251
BOTH OUTPUTS MUST BE USED
LEFT
+
PS12
PS12
OFF - ON
PHANTOM
POWER
CH 1
INPUT
CH 2
INPUT
The new MA251 is a compact class D
stereo amplier with a 4 CH. stereo mixer
built in. It has 5 watts per channel @ 4
Ohms. The class D low heat design gives
the MA251 the ability to be mounted in
very tight applications. It will work great in
ceilings by projectors, or anywhere small
and heat free amplication is required. The
MA251 is in an all metal chassis and
weighs 1 pound. Overall dimension are
6.75” X 3.5” X 1.5”. Bottom mounts are
provided for permanent installations. The
MA251 has an included 12 VAC external
power supply. The 4 channel mixer section
consists of 2 separate RCA stereo inputs,
along with an XLR mic input and a 3.5mm
(1/8”) stereo input perfect for an ipod or
laptop computer type input. Phantom
power is supplied to the XLR input by a
switch on the back of the MA251.
SPECIFICATIONS
Line Input Impedance: 10K Ohms line
600 Ohms mic
Power Output:
Voltage Gain: 55 dB mic
30 dB line
Maximum Supply Voltage: 24 VDC
THD: .05% typical
Effi ciency: 85%
Bandwidth: 20Hz - 25 kHz
Size: 6.75" x 3.5" x 1.5"
Weight: 1 lb.
5 watts X 2 @ 4 Ohms.
CH 3
INPUT
LINE
OUT
MUTE
+
RIGHT
-
-
+
LEFT
Size: 6.75” X 3.5” X 1.5”
ROLLS
PS12
+
LEFT
BOTH OUTPUTS MUST BE USED
MIXER - AMP
MA251
CLASS AMP
5 + 5 WATT MIX/AMP
5 + 5 Watts
+
RIGHT
CH 4
3.5mm
STEREO
INSTALLATION MIX - AMPLIFIER
STEREO INPUTS AND OUTPUTS
ROLLS
5968 SOUTH 350 WEST S.L.C.,UT 84107
PHONE: 8012639053
FAX: 8012369068
DATA SHEET FOR MA251 www.rolls.com
MADE IN USA
MUTE R
L
CH 2
LEVEL
MONO
INPUT
LINE
OUT
CH 3CH 4
LEVEL
CH 3
INPUT
Included - 12
VAC ROLLS
PS12 external
power supply
R
R
L
CH 2
INPUT
L
CH 2
LEVEL
CH 1
INPUT
PHANTOM
CH 1
LEVEL
75889 02510
ON - OFF
POWER
16
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