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RKB-2100 Power Amplifier
Speaker Connections
See Figure 2
The RKB-2100 has one pair of color coded
connections per channel. Labels above the
connectors show the proper connections.
These speaker connectors accept bare wire,
connector lugs, or "banana" type connectors
(except in the European Community countries
where their use is not permitted).
Route the wires from the RKB-2100 to the
speakers. Give yourself enough slack so you
can move the components enough to allow
access to the speaker connectors.
If you are using banana plugs, connect them
to the wires and then plug into the backs of
the speaker connectors. The collars of the
speaker connectors should be screwed in all
the way (clockwise).
If you are using terminal lugs, connect them
to the wires. If you are attaching bare wires
directly to the speaker connectors, separate the
wire conductors and strip back the insulation
from the end of each conductor. Be careful
not to cut into the wire strands. Unscrew (turn
counterclockwise) the speaker connector col-
lar. Place the connector lug around the shaft,
or insert the bundled wire into the hole in the
shaft. Turn the collars clockwise to clamp the
connector lug or wire firmly in place.
: Be sure there are no loose wire strands
NOTE
that could touch adjacent wires or connec-
tors.
Connect the left speaker to the pair of speaker
connectors labeled LEFT. Connect the right
speaker to the speaker connectors labeled
RIGHT. Follow the labels printed above the
connectors, Make sure that the positive ter-
minal of the speaker is connected to the +
terminal on the amplifier. Make sure that the
negative terminal of the speaker is connected
to the – terminal of the amplifier.
Troubleshooting
Most difficulties in audio systems are the result
of poor or wrong connections, or improper
control settings. If you encounter problems,
isolate the area of the difficulty, check the
control settings, determine the cause of the
fault and make the necessary changes. If you
are unable to get sound from the RKB-2100,
refer to the suggestions for the following
conditions:
Front Panel Power Indicator Is
Not Lit
No main power to the RKB-2100. Check AC
power connections at the amplifier and the AC
outlet. Check the front panel power switch.
Make sure that it is set to the ON position.
If using signal sensing auto power-on, make
sure that a signal is present at the inputs. If
using 12V trigger power-on, make sure that
a trigger signal is present at rear panel +12V
TRIGGER connector.
No Sound
If the amp is getting AC power, but is pro-
ducing no sound, check the PROTECTION
INDICATOR on the front panel. If lit, see be-
low. If not, check all of your connections and
control settings on associated components.
Make sure that your input connections and
speaker connections match your selected
stereo/mono configuration.
Protection Indicator Is Lit
The front panel PROTECTION INDICATOR
lights when the RKB-2100 protection circuits
have shut off the amplifier. Typically, this oc-
curs only when the ventilation openings are
blocked, when there is faulty speaker wiring,
or after a period of extreme use. Turn off the
system and wait for the amp to cool. Then
push the front panel power switch in and out
to reset the protection devices. If the problem
is not corrected or reoccurs, there is a problem
with the system or the amplifier itself.
10
Specifications
Continuous Power Output into 8 ohms
(20-20k Hz, < 0.03% THD)
100 watts/ch into 8 ohms, all channels driven
Continuous Power Output into 4 ohms
(DIN 1 kHz,1.0% THD)
170 watts/ch into 4 ohms, all channels driven
Total Harmonic Distortion
(20Hz-20kHz, 8 ohms)
Continuous rated power: < 0.03%
One-half rated power: < 0.03%
1 watt power: < 0.03%
Intermodulation Distortion
(60 Hz : 7 kHz, 4:1)
< 0.03%
Damping Factor
(20-20,000 Hz, 8 ohms)
>200
Input Impedance
20 k Ohms
Input Sensitivity
1.0 volt
Amplifier Gain:
29 dB
Input Overload Level
5.0 volt
Peak Current
> 60 A
Frequency Response (±1 dB)
4Hz-100kHz
S/N Ratio (IHF A)
120 dB
Crosstalk/Separation
> 70 dB
Speaker Impedance
4 ohms minimum
Auto Turn On Level (with all inputs)
3 mV input signal
Power Requirements
USA: 120 Volts, 60 Hz
Europe: 230 Volts, 50 Hz
Power Consumption
450 Watts
Idle: 40 Watts
Standby: 2.3 Watts
Dimensions (W x H x D)
(not including rack adaptors)
430 x 144 x 328 mm
16.9 x 5.7 x 12.9 in
Weight (net)
11.2 kg, 25 lb.
Panel Height
3U, 132.6 mm/5.2 in
When sizing openings in custom cabinets, mea-
sure the unit to be installed and/or allow at least
1 mm clearance on all sides for unit to unit toler-
ances.
All specifications are accurate at the time of print-
ing. Rotel reserves the right to make improve-
ments without notice.
Rotel and the Rotel HiFi logo are registered trade-
marks of The Rotel Co, Ltd., Tokyo, Japan.
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