Rotel RA-812 Owner's Manual

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Rotel RA-812 Amplifier Specification

The Rotel RA-812 is a high-fidelity integrated amplifier designed to deliver exceptional audio performance with a focus on precision and clarity. It features a robust build quality typical of Rotel's engineering ethos, ensuring durability and reliability. The amplifier offers a power output of 32 watts per channel into 8 ohms, providing sufficient power for a wide range of speakers while maintaining audio purity. It incorporates a low distortion level with a total harmonic distortion of less than 0.03%, ensuring minimal interference with audio signals.

The RA-812 includes a comprehensive range of inputs and outputs, including phono, tuner, aux, and tape loops, allowing for versatile connectivity with various audio sources. The inclusion of a phono stage supports both moving magnet (MM) cartridges, catering to vinyl enthusiasts. Tone controls for bass and treble are provided, along with a tone defeat switch for purists who prefer an unaltered audio signal. The amplifier also features a loudness switch, enhancing low and high-frequency response at lower listening levels for a more dynamic sound.

Its front panel is equipped with a user-friendly interface that includes a large volume knob, input selector switches, and balance controls, all designed for intuitive operation. The RA-812’s design aesthetic is understated yet elegant, featuring a classic silver aluminum faceplate that complements any audio setup. With a focus on delivering high-quality sound and a range of features for audio customization, the Rotel RA-812 stands as a testament to Rotel's commitment to audio excellence.

Rotel RA-812 Amplifier F.A.Q.

How do I connect my Rotel RA-812 Amplifier to a turntable?

To connect your turntable to the Rotel RA-812, use an RCA cable to connect the turntable's output to the 'Phono' input on the amplifier. Ensure that the grounding wire from the turntable is connected to the ground terminal on the amplifier to prevent hum or noise.

What should I do if there's no sound coming from the speakers?

First, check that the amplifier is powered on and the correct input source is selected. Ensure that the speaker wires are correctly connected to the amplifier's speaker terminals. Check the volume level and try a different audio source to rule out external device issues.

How can I clean the Rotel RA-812 Amplifier?

Turn off and unplug the amplifier before cleaning. Use a soft, dry cloth to wipe the exterior. For stubborn dirt, slightly dampen the cloth with water. Avoid using chemical cleaners or allowing moisture to enter any openings.

What is the correct procedure for replacing a blown fuse in the RA-812?

Unplug the amplifier and locate the fuse holder at the back. Use a screwdriver to open the fuse holder and remove the blown fuse. Replace it with a new fuse of the same type and rating. Reattach the fuse holder and plug the amplifier back in.

Can I use headphones with the Rotel RA-812?

Yes, you can use headphones with the Rotel RA-812. Simply plug your headphones into the headphone jack located on the front panel. Ensure the volume is set to a low level before putting on the headphones.

What is the function of the 'Tape Monitor' button on the RA-812?

The 'Tape Monitor' button allows you to listen to the audio signal being sent to a connected tape recorder. This is useful for monitoring recordings or comparing the recorded output with the original source.

How do I adjust the balance between the left and right speakers?

Use the 'Balance' control knob on the front panel of the Rotel RA-812. Turn the knob towards the left or right to adjust the sound balance until you achieve the desired audio balance between the speakers.

Why does my amplifier overheat and shut down?

Ensure the amplifier has adequate ventilation and is not placed on a heat-trapping surface. Check for obstructions around the cooling vents. If the issue persists, verify that the speaker impedance matches the amplifier's specifications, as mismatched impedance can cause overheating.

How can I reduce hum or noise in my audio setup?

Ensure all connections are secure and use quality cables. Connect the amplifier and all audio sources to the same electrical outlet to minimize ground loops. If using a turntable, ensure it is properly grounded to the amplifier.

What maintenance does the Rotel RA-812 require for optimal performance?

Regularly dust the exterior and ensure all connectors are clean and secure. Periodically check and tighten any loose screws. It is advisable to have the amplifier serviced by a professional every few years to ensure all internal components are functioning correctly.