Rolls RP220 - Manual

RP220
Dual Tube Mic Preamp
The RP220 provides clear sonic quality and perfor-
mance for the working musician, studio operator or
anyone who needs a preamp with the warm, smooth,
analog sound. Each channel utilizes one premium 7025
tube in a unique configuration to give smooth control-
lable gain through transformer balanced inputs. The unit
has both XLR and 1/4" inputs and outputs with a 30 dB
Pad and a Phase Reversal switches to adapt to any
performing or studio situation.
WHY TUBES?
Because they sound great! Vacuum tube circuits have
a natural warming effect on audio signals because they
react differently than solid state devices and will not
reproduce sharp transients in the music. The result of
adding a Bellari tube processor or preamp to your sig-
nal is a smooth round sound.
Preamps or signal processors are designed to provide
low noise gain or effects to microphones and instru-
ments without coloring or distorting the sound in an
unpleasant way. The audio signal can go directly from
a Bellari tube processor to the recorder, thus bypass-
ing any additional solid state circuits of a mixer.
SPECIFICATIONS
Frequency Response:
20Hz - 40kHz, +/- 3dB Mic/Line
5Hz - 40kHz inst.
Input Impedance: 600
Ω
balanced XLR
1M
Ω
Instrument
THD: 0.1% typical
S/N Ratio: >107 dB
Max Gain: 48 dB Inst. or Line, 70 dB Low Z
Indicators: 5 segment output level
Power status LED
Input/Output jacks: XLR balanced and 1/4”
Dimensions: 3.5” x 6” x 19”
(89mm x 162mm x 482mm)
Power: 120 VAC (230 VAC) 15 VA
Weight: 7.5 lbs (3.5 kg)
Bellari is a division of Rolls Corporation
5143 South Main Street
Salt Lake City, UT 84107
www.rolls.com
Tube preamps and processors have gained in popularity to
counteract the “digital sound” of contemporary digital re-
cording equipment which may sound harsh or brittle. Tube
processors are utilized by recording engineers who prefer
the “sound” of analog recording equipment, but like the
editing and predictability of digital recorders. Bellari tube
processors have a more even harmonic structure, adding
that analog touch back to the signal, so they just plain sound
better.
GAIN VOLUME
PWR
INST.
INPUT
+48V
RP220
Channel One
Dual Tube Microphone Preamp
+38 dB +65 dB 0
-30dB
NORM
- OO
PHAN
POWER
INPUT
PAD
GAIN VOLUME
INST.
INPUT
+48V
Channel Two
+38 dB +65 dB 0
-30dB
NORM
- OO
PHAN
POWER
INPUT
PAD
CHANNEL
ONE CHANNEL
TWO
OUTPUT INPUT
OUTPUT
CAUTION
WARNING: DO NOT EXPOSE THIS EQUIPMENT TO RAIN
OR MOISTURE.
CAUTION:
TO REDUCE THE RISK OF ELECTRIC SHOCK DO NOT
NOT REMOVE BACK. NO USER SERVICABLE PARTS INSIDE. REFER
SERVICING TO QUALIFIED SERVICE PERSONNEL.
RISQUE DE CHOC - NE PAS ENLEVER
RISK OF ELECTRIC SHOCK
DO NOT OPEN
120 VAC
50/60 Hz 15 VA
MADE IN U.S.A.
MODEL RP220
SERIAL NUMBER
220-
OUTPUT
OUTPUT INPUT
NORM
-30dB
NORM
REV
NORM
-30dB
NORM
REV
NRTL /C
PHASE OUTPUT
LEVEL
PHASE OUTPUT
LEVEL