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Custom Installation Amplifiers
RKB-250, RKB-650 and RKB-2100
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RKB-250, RKB-650 and RKB-2100
Custom Installation Amplifiers
Rotel’s new custom power amplifiers address all of the demands
of the professional custom installer: easy rack-mount installation,
failsafe design, and set it and forget it operation. They also come
with the most important features that all music lovers want: great
sound and an affordable price.
This is all possible due to Rotel’s Balanced Design Concept, a
design philosophy that emphasizes an exhaustive analysis of ever y
part that goes into our circuits to determine not which one will do,
but which one will sound best.
There are three models to cover almost ever y custom application.
The RKB-250 features, 2 x 50 watts RMS @ 8 ohms, the RKB-650
is rated 6 x 50 watts RMS @ 8 ohms, and the RKB-2100 output
is 2 x 100 watts @ 8 ohms. These power amplifiers are extremely
robust and are able to increase their output power into 4 ohms
(20 Hz-20 kHz, 0.05% THD).
Each RKB power amplifier includes front access gain controls for
easy settings, a security cover for tamper-proof installations, an
IEC detachable power cord, a 12-volt trigger input for remote sys-
tem operation, and rack mount capability.
With high output power, high thermal stability and shor t-circuit
protection, the RKB Series is the ideal solution to any permanently
installed sound system.
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Custom Installation Amplifiers
RKB-250
FEATURES
3 models to meet your exact power requirements
Toroidal power supply technology for high performance and compact size
Custom integrated security covers over volume controls for tamper proof installations
Audio pass through (RCA) to send line level signals to an additional amplifier
Optional cooling fan available
Front panel gain controls for fast settings
12 volt trigger input for turn On and Off
12 volt trigger output for daisy chaining
Front panel indicators including signal
5 way binding post output connector
Comprehensive protection circuitry including DC, infrasonic, thermal overload and
short circuit protection
5-year warranty
RKB-650
RKB-2100
Page 4
Optional RKB-1 Fan Kit
SPECIFICATIONS
Continuous Power Output into 8 ohms
(20-20k Hz, < 0.03% THD)
Continuous Power Output into 4 ohms
(DIN 1 kHz,1.0% THD)
Total Harmonic Distortion
(20Hz-20kHz, 8 ohms)
Intermodulation Distor tion
(60 Hz : 7 kHz, 4:1)
Damping Factor
(20-20,000 Hz, 8 ohms)
Input Impedance
Input Sensitivity
Amplifier Gain:
Input Overload Level
Peak Current
Frequency Response (±1 dB)
S/N Ratio (IHF A)
Crosstalk/Separation
Speaker Impedance
Auto Turn On Level (with all inputs)
Power Requirements
Power Consumption
Dimensions (W x H x D)
(not including rack adaptors)
RKB-250
50 watts/ch into 8 ohms,
all channels driven
90 watts/ch into 4 ohms,
all channels driven
Continuous rated power: < 0.03%
One-half rated power: < 0.03%
1 watt power: < 0.03%
< 0.03%
>200
20 k Ohms
1.0 volt
26 dB
5.0 volt
> 25 A
10Hz-100kHz
115 dB
> 70 dB
4 ohms minimum
3 mV input signal
USA: 120 Volts, 60 Hz
Europe: 230 Volts, 50 Hz
190 Watts
Idle: 22 Watts
Standby: 2.3 Watts
430 x 100 x 322 mm
16.9 x 3.9 x 12.7 in
RKB-650
6x50 watts/ch into 8 ohms,
all channels driven
6 x 80 watts/ch into 4 ohms,
all channels driven
Continuous rated power: < 0.03%
One-half rated power: < 0.03%
1 watt power: < 0.03%
< 0.03%
>200
20 k Ohms
1.0 volt
26 dB
5.0 volt
> 25 A
10Hz-100kHz
115 dB
> 70 dB
4 ohms minimum
3 mV input signal
USA: 120 Volts, 60 Hz
Europe: 230 Volts, 50 Hz
450 Watts
Idle: 42 Watts
Standby: 2.6 Watts
430 x 144 x 429 mm
16.9 x 5.7 x 16.9 in
RKB-2100
100 watts/ch into 8 ohms,
all channels driven
170 watts/ch into 4 ohms,
all channels driven
Continuous rated power: < 0.03%
One-half rated power: < 0.03%
1 watt power: < 0.03%
< 0.03%
>200
20 k Ohms
1.0 volt
29 dB
5.0 volt
> 60 A
4Hz-100kHz
120 dB
> 70 dB
4 ohms minimum
3 mV input signal
USA: 120 Volts, 60 Hz
Europe: 230 Volts, 50 Hz
450 Watts
Idle: 40 Watts
Standby: 2.3 Watts
430 x 144 x 328 mm
16.9 x 5.7 x 12.9 in
Weight (net)
Panel Height
8 kg, 17.6 lb.
2U, 88.1 mm/3.5 in
15.5 kg, 34.1 lb.
3U, 132.6 mm/5.2 in
11.2 kg, 25 lb.
3U, 132.6 mm/5.2 in
www.rotel.com
54 Co nc ord Stre et • No r t h Readi ng • MA • USA • 01864 -2 69 9 • P ho ne 97 8- 66 4-3820 • Fax 9 78-664-41 09
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