Rotel RA-03 Troubleshooting, Specifications, Protection Circuitry, Volt Trigger Outlet, English

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 3

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.

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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 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)

English

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

80dB

100dB

115 Volts, 60 Hz

230 Volts, 50 Hz

300 W, 36 W - Idle, 3.7 W - Standby

435 x 92 x 342 mm 17 1/8 x 35/8 x 131/2”

80mm / 31/16” 7.7 kg, 17 lbs.

All specifications are accurate at the time of printing.

Rotel reserves the right to make improvements without notice.