Rolls MA255 Bruksanvisning
Sidor 2 Engels Stavmixer
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MA255
20 + 20 watt
Mixer/Amplifier
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, efficient operation
• Small compact size
• Class D high efficiency amp
The MA255 is a very compact 20 + 20 watt high efficiency 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.
W
W
W
WARNING:
ARNING:
ARNING:
ARNING: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
Effi ciency: 85%
Input Sensitivity: 28 mV
Bandwidth: 20Hz - 25 kHz +/- 3dB
+Size: 6.75" x 3.5" x 1.5"
Weight: 1 lb.
Produktspecifikationer
| Varumärke: | Rolls |
| Kategori: | Stavmixer |
| Modell: | MA255 |
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