Rolls MA251 User manual

The new MA251 is a compact class D
stereo amplier 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 amplication 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.
MSRP: $150.00 USD
ROLLS
ROLLS
MIXER - AMP
MIXER - AMP
5 + 5 Watts
5 + 5 Watts
ROLLS
5968 SOUTH 350 WEST S.L.C.,UT 84107
PHONE: 8012639053
FAX: 8012369068
MA251
DATA SHEET FOR MA251 www.rolls.com
INSTALLATION MIX - AMPLIFIER
STEREO INPUTS AND OUTPUTS
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
Efficiency: 85%
Bandwidth: 20Hz - 25 kHz
Size: 6.75" x 3.5" x 1.5"
Weight: 1 lb.
5 + 5 WATT MIXER - AMPLIFIER
MADE IN USA
Included - 12
VAC ROLLS
PS12 external
power supply
5 watts X 2 @ 4 Ohms.
75889 02510 16
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 RRR
LLL
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
RRR
LLL
CH 4 CH 1
CH 2
CH 3CH 4
LEVEL LEVEL LEVEL LEVEL
PS12
LEFT
RIGHT
MA251
INPUT
+
+
SPEAKER OUTPUTS
PHANTOM CH 1
INPUT CH 2
INPUT CH 3
INPUT
POWER LINE
OUT
OFF - ON
CH 2
MONO
INPUT
MUTE
MADE IN USA
010010010010
www.rolls.com
--
CLASS AMP
5 + 5 WATT MIX/AMP
Size: 6.75” X 3.5” X 1.5”