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6
Placement
Like all audio components that handle low-
level signals, the RB-03 can be affected by its
environment. Avoid placing the RB-03 on top
of other components. Also avoid routing au-
dio signal cables near power cords. This will
minimize the chance it will pick up hum or in-
terference.
The RB-03 generates heat as part of its nor-
mal operation. The heat sinks and ventilation
openings in the amplifier are designed to dis-
sipate this heat. The ventilation slots in the top
cover must be open. There should be 10 cm
(4 inches) of clearance around the chassis, and
reasonable airflow through the installation lo-
cation, to prevent the amplifier from overheating.
Remember the weight of the amplifier when
you select an installation location. Make sure
that the shelf or cabinet can support it. We
recommend installing the RB-03 in furniture
designed to house audio components. Such
furniture is designed to reduce or suppress
vibration which can adversely affect sound
quality. Ask your authorized Rotel dealer for
advice about component furniture and proper
installation of audio components.
Cables
Be sure to keep the power cords, digital sig-
nal cables and regular audio signal cables in
your installation away from each other. This
will minimize the chance of the regular au-
dio signal cables picking up noise or inter-
ference from the power cords or digital cables.
Using only high quality, shielded cables will
also help to prevent noise or interference from
degrading the sound quality of your system.
If you have any questions see your authorized
Rotel dealer for advice about the best cable
to use with your system.
RB-03 Stereo Power Amplifier
AC Power and Control
AC Power Input
The RB-03 is supplied with the proper AC
power cord. Use only this cord or an exact
equivalent. Do not use an extension cord. A
heavy duty multi-tap power outlet strip may
be used, but only if it is rated to handle the
current demand of the RB-03.
Be sure the Power Switch on the front panel
of the RB-03 is turned off. Then, plug one end
of the cord into the AC power connector
on the back panel of the amplifier. Plug the
other end into an appropriate AC outlet.
Your RB-03 is configured at the factory for the
proper AC line voltage in the country where
you purchased it (USA: 115 volts/60 Hz ,
Europe: 230 volts/50 Hz). The AC line con-
figuration is noted on a label on the back panel.
NOTE: Should you move your RB-03 to
another country, it is possible to configure
your amplifier for use on a different line
voltage. Do not attempt to perform this con-
version yourself. Opening the enclosure of
the RB-03 exposes you to dangerous volt-
ages. Consult a qualified technician or the
Rotel factory service department for infor-
mation.
If you are going to be away from home for
an extended period of time, it is a sensible
precaution to unplug your amplifier.
Power Switch and
Indicator
The Power Switch is located on the front panel.
To turn the amplifier on (or to activate either
of the optional automatic power-on modes),
push the switch in. The LED indicator above
the switch will light, indicating that the am-
plifier is turned on. To turn the amplifier off,
push the button again and return it to the out
position.
Trigger ON/OFF
Mode Selector
The Amplifier provides the option for manual
or automatic power on/off operation. These
modes are selectable using a toggle switch on
the back panel.
With the switch in the 12V TRIGGER ON
position, the amplifier is turned on automati-
cally when a 12V trigger signal is present at
the 3.5 mm Jack of TRIGGER IN on the rear
panel. The amplifier will go into standby mode
if the 12V signal is not present. The front panel
POWER SWITCH overrides this function. It must
be ON for the 12V trigger to work. Turning
the switch OFF cuts power to the amplifier,
regardless of whether or not a trigger signal
is present.
12V Trigger Input
and Output
The jack labeled IN is for connecting the 3.5mm
Plug/Cable carrying a 12 V trigger signal to
turn the amplifier on and off. To use this fea-
ture the toggle switch must be set to the ON
position. This input accepts any control sig-
nal (AC or DC) ranging from 3 volts to 30 volts.
The jack labeled OUT is for connecting an-
other 3.5mm plug/cable to provide a 12V
trigger signal to other components. The 12V
output signal is available whenever a 12 V
trigger signal is applied to the IN connector.
Input Signal Connection
[See Figure 2 for normal stereo wir-
ing illustration.]
The RB-03 has conventional RCA type input
connectors, the type found on nearly all au-
dio equipment.
Note: To prevent loud noises that neither
you nor your speakers will appreciate,
make sure the amplifier is turned off when
you make any signal connections.
Select a high quality pair of audio intercon-
nect cables. Connect the left channel output of
your preamp to the left channel input on the
RB-03. Connect the right channel output of your
preamp to the right channel input.