Rolls RA900 User Manual
R a900 power amplifier, Power amplifier
![background image](/manuals/200344/1/background.png)
R A900 Power Amplifier
The R A900 Power Amplifier is a two channel amp with
two 410 watt RMS - 4 ohm outputs via 1/4" jacks or 5-
way binding posts. It may be bridged and connected to a
4 or 8 ohm load supplying up to 1100 Watts or 850 Watts
respectively. The unit is housed in a painted steel chas-
sis and includes a special high performance transformer,
and a fused power line.
The R A900 is ideal for DJs, musicians, or other sound
reinforcement applications like powering front-of-house
speakers or monitors.
SPECIFICATIONS
Power Output, Stereo:
570 W RMS/ch. 2
Ω
410 W RMS/ch. 4
Ω
260 W RMS/ch. 8
Ω
Bridged:
1100 Watts RMS 4
Ω
850 Watts RMS 8
Ω
Input Connectors:
1/4" TRS balanced and XLR balanced
Output Connectors:
1/4" and 5-way binding posts
Sensitivity:
0.9 V rms 0 dB V
THD:
<.05% (20Hz - 20 kHz)
@ rated output, 8
Ω
)
Frequency response:
@ 1 Watt rms 8
Ω
; 10Hz to 40kHz
@ rated output, 8
Ω
; 20Hz to 20kHz
Hum and Noise:
100 dB, unweighted
Power Consumption:
7A and 120 VAC
Cooling System:
2 speed fan
Transformer:
Toroidal
Size:
19" x 3.5" x 15.9" (48.3 x 8.8 x 40.5 cm)
Weight:
31 lbs (14 kg)
ROLLS Coporation
5143 South Main Street, Salt Lake City, UT, 84107
(801) 263-9053 FAX (801) 263-9068
[email protected] • www.rolls.com
CHANNEL A
0 10
RA900
CHANNEL B
0 10
PROTECT
CLIP
SIGNAL
POWER
POWER
INPUT
BAL
B
A
Channel B
Channel A
INPUT
THRU
B
A
CA
UTION
MINIMUM L
OAD IMPEDANCE
2 OHMS PER CHANNEL
4 OHM BRIDGE
FUSE
15A/120V
- BRIDGE MONO +
POWER AMPLIFIER
+
-
+ 2
- 3
1
23
4
BA
1
4
2
3
LO
W
CUT FIL
TER
ON=30Hz
OFF=50Hz
LO
W
CUT FIL
TER
ON=30Hz
OFF=50Hz
1
GROUND
LIF
T
AMP MODE
STEREO
BRIDGE