Volt Trigger Outlet; Troubleshooting; Specifications; Fuse Replacement - Rotel RA-03 Owner's Manual

12 Volt Trigger Outlet

Some audio components can be turned on
automatically when they receive a 12V turn
on "signal". The 12V Trigger Outputs of the
RA-03 provide the required signal. Connect
compatible components to the RA-03 with a
conventional 3.5mm miniplug cable. When the
RA-03 is in Standby mode, the trigger signal
is interupted, so the components controlled by
it are turned off.
Protection Circuitry
The RA-03 has both thermal and over-current
protection circuitry that protects the amplifier
against damage in the event of extreme or faulty
operating conditions. The protection circuits
are independent of the audio signal and have
no impact on sonic performance. Instead, the
protection circuits monitor the temperature of
the output devices and shut down the amplifier
if temperatures exceed safe limits.
Most likely, you will never see this protection
circuitry in action. However, should a faulty
condition arise, the amplifier will stop playing
and the LED indicator on the front panel will
light up.
If this happens, turn the amplifier off. Let it
cool down for several minutes, and attempt to
identify and correct the problem that caused
the protection circuitry to engage. When you
turn the amplifier back on, the protection circuit
will automatically reset and the indicator LED
should go out.
In most cases, the protection circuitry activates
because of a fault condition such as shorted
speaker wires, or inadequate ventilation lead-
ing to an overheating condition. In very rare
cases, highly reactive or extremely low imped-
ance speaker loads could cause the protection
circuit to engage.
If the protection circuitry triggers repeatedly
and you are unable to isolate and correct the
faulty condition, contact your authorized Rotel
dealer for assistance in troubleshooting.
9

Troubleshooting

]
Most difficulties in audio systems are the result
of incorrect 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 RA-03 refer to the suggestions
for the following conditions:

Power Indicator Is Not Lit

The Power Indicator should be lit whenever the
3
RA-03 is plugged into the wall power outlet
and the Power Switch is pushed in. If it does
not light, test the power outlet with another
electrical device, such as a lamp. Be sure the
power outlet being used is not controlled by
a switch that has been turned off.
Specifications
Continuous Power Output
(20-20 kHz, < 0.03%, 8 ohms)
Total Harmonic Distortion (20Hz-20kHz)
Intermodulation Distortion (60 Hz : 7 kHz, 4:1)
Frequency Response
Phono Input
Line Level Inputs
Damping Factor (20-20,000 Hz, 8 ohms)
Input Sensitivity / Impedance
Phono Input
Line Level Inputs
Input Overload
Phono Input
Line Level Inputs
Premp Output / Impedance
Tone Controls - Bass / Treble
Signal to Noise Ratio (IHF "A" weighted)
Phono Input
Line Level Inputs
Power Requirements
USA Version
European Version
Power Consumption
Dimensions (W x H x D)
Panel Height
Weight (net)
All specifications are accurate at the time of printing.
Rotel reserves the right to make improvements without notice.

Fuse Replacement

If another electrical device works when plugged
into the power outlet, but the Power Indicator
of the RA-03 does not light when plugged
into the same outlet and the Power Switch is
pushed in, it indicates that the internal power
fuse may have blown. If you believe this has
happened, contact your authorized Rotel dealer
to get the fuse replaced.
No Sound
Check the signal source to see if it is function-
ing properly. Make sure the cables from the
signal source to the RA-03 inputs are connected
properly. Be sure the Listening Selector is set
to the proper input. Check the wiring between
the RA-03 and the speakers.
60 watts/ch
< 0.03% at rated power, 1/2 power or 1 watt
< 0.03% at rated power, 1/2 power or 1 watt
20Hz-15kHz, ±0.3dB
10Hz-100kHz, +1, –3dB
180
2.5mV / 47 kOhms
150 mV / 24 kOhms
180mV
5V
1V / 470 Ohms
±6 dB at 100Hz / 10kHz
80 dB
100 dB
115 Volts, 60 Hz
230 Volts, 50 Hz
300 W, 36 W - Idle, 3.7 W - Standby
435 x 92 x 342 mm
17 / x 3 / x 13 / "
1 5 1
8 8 2
80 mm / 3 / "
1
16
7.7 kg, 17 lbs.
English