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INTRODUCTION
Thank you for your purchase of the ROLLS RA235 35 Watt Power Amplifi er. The
RA235 is a virtually indestructible single rack space amplifi er intended for musi-
cians and studio owners alike. The unit is ideal for home studio applications or
wherever a clean, effi cient, medium wattage amp is required. Please read the
following manual carefully to achieve the best results from this product.
DESCRIPTION
FRONT PANEL
pwr CLIP CLIP
VOLUME 2
0 10
VOLUME 1
0 10
RA235
35 Watt Stereo
Power Amplifier
VOLUME 1 / VOLUME 2: This control adjusts the output level of the correspond-
ing channel.
PWR: LED indicating the unit’s power status.
CLIP: These LEDs light in the event of overload in the corresponding channel.
REAR PANEL
CHANNEL 2
INPUT
CHANNEL 1
INPUT
WARNING:
DO NOT EXPOSE THIS EQUIPMENT TO RAIN OR MOISTURE
NO USER SERVICABLE PARTS INSIDE.
MODEL RA235
MADE IN USA
SERIAL NUMBER
235 -
OUTPUTS
CHANNEL TWO CHANNEL ONE
120VAC 50/60Hz 100VA
1.5A Fuse
RISQUE DE CHOC - NE PAS ENLEVER
120 VAC 50/60 HZ 15 VA: IEC Power Cord. Connect to a properly grounded
AC source. NOTE: REPLACE THE FUSE WITH ONLY THE PROPER RATED
FUSE. INSTALLING A FUSE OTHER THAN THE RECOMMENDED RATING
WILL DAMAGE THE UNIT.
Outputs: Spring loaded terminals to be connected to 8 Ohms speaker loads only.
MAIN INPUTS: 1/4” and RCA jacks to be connected to line level signals to be
amplifi ed. Note: Do not directly connect the output of a phono player as those
devices require special equalization.
For MONO operation, plug one RCA connector between the two RCA jacks. Ei-
ther Channel One or Channel Two 1/4” inputs may be used as the MONO input.
BURN WARNING!
THE FRONT PANEL OF THE RA235 IS THE HEAT DISTRIBUTION FOR THE
OUTPUT STAGES. IF THE UNIT IS OPERATED AT HIGH VOLUMES, IT MAY
GET HOT.
INSTALLATION
Mount the RA235 in a safe and sturdy rack. Connect the output of the signal
source to the selected input of the RA235, and connect the Outputs to your
speakers.
Plug the AC cord into a properly grounded AC outlet.
Send signal to the RA235 and adjust the VOLUME controls for a comfortable
listening level.
SPECIFICATIONS
Recommended Load: 8 Ohms minimum
Frequency Response: 5 Hz to 40 kHz
Equiv. Input Noise: 100 microVolt typical, A weighted
600 Ohm input
S/N Ratio: 114 dB @ 35 Watts
Gain: 34 dB
Input Impedance: 47 k Ohms
Size (W x H x D): 19” x 1.75” x 5” (48 x 4.5 x 12.7)
Weight: 5.5 lbs (2.5 kg)
SCHEMATIC