Rotel RB-985 MKII Owner's Manual

Rotel RB-985 MKII Amplifier manual cover
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Rotel RB-985 MKII Amplifier Specification

The Rotel RB-985 MKII Amplifier is a high-performance, five-channel amplifier designed for home theater enthusiasts seeking superior audio fidelity. It delivers a robust 100 watts per channel into 8 ohms, ensuring ample power for dynamic sound reproduction. The amplifier features a wide frequency response range from 10Hz to 80kHz, allowing for precise audio detailing and clarity across all audio spectrums. Its total harmonic distortion is kept remarkably low at 0.03%, contributing to clean and accurate sound output. Signal-to-noise ratio is rated at 116 dB, minimizing background noise and enhancing overall audio quality. The RB-985 MKII employs a toroidal transformer, which provides efficient power delivery and reduces electromagnetic interference for improved audio purity. It includes independent power supply sections for each channel, enhancing channel separation and reducing crosstalk. The amplifier is equipped with high-quality RCA inputs, ensuring compatibility with a wide range of audio sources and preamplifiers. Its robust construction includes a solid chassis that minimizes vibrations and enhances durability. The Rotel RB-985 MKII also features protection circuitry to safeguard against overloads and short circuits, ensuring reliable operation. With its sleek design and high-quality components, the RB-985 MKII is engineered to meet the demands of audiophiles and home theater enthusiasts who prioritize uncompromising sound quality and reliability.

Rotel RB-985 MKII Amplifier F.A.Q.

How do I connect my Rotel RB-985 MKII Amplifier to a home theater receiver?

To connect your Rotel RB-985 MKII Amplifier to a home theater receiver, use RCA cables to connect the pre-out outputs of your receiver to the amplifier's inputs. Ensure that you match the channels correctly (Front Left to Front Left, etc.).

What should I do if my Rotel RB-985 MKII Amplifier is overheating?

Ensure the amplifier is placed in a well-ventilated area and not stacked with other equipment. Check if the cooling fans are functioning properly, and clean any dust from the vents. If the problem persists, consult a professional technician.

How can I troubleshoot a channel that is not producing sound on my Rotel RB-985 MKII?

First, check all cable connections to ensure they are secure. Swap the speaker cables with another channel to determine if the issue is with the speaker or the amplifier. If the problem remains, there may be an internal issue requiring professional service.

What is the proper maintenance routine for the Rotel RB-985 MKII Amplifier?

Regularly dust the exterior and ensure the vents are clear of obstructions. Periodically check all connections for tightness. If used frequently, consider having the amplifier serviced by a professional annually to ensure optimal performance.

How do I reset the Rotel RB-985 MKII Amplifier after a fault condition?

Turn off the amplifier and disconnect it from the power source for at least 30 seconds. Reconnect the power and turn the amplifier back on. If the fault condition persists, further investigation or professional service may be required.

Can I use the Rotel RB-985 MKII with 4-ohm speakers?

Yes, the Rotel RB-985 MKII is capable of driving 4-ohm speakers. However, ensure adequate ventilation to prevent overheating due to the increased load.

What are some common issues faced with the Rotel RB-985 MKII Amplifier?

Common issues include overheating, channel imbalance, and connectivity problems. These can often be resolved by ensuring proper setup, cleaning, and maintenance.

How do I bi-amp my speakers using the Rotel RB-985 MKII?

Connect one pair of the amplifier's outputs to the speaker's high-frequency inputs and another pair to the low-frequency inputs. Ensure your speakers are bi-amp capable and adjust the settings on your preamp/receiver accordingly.

Why is there a hum or noise coming from the Rotel RB-985 MKII?

Check for ground loops, which are a common cause of hum in audio systems. Ensure all components are connected to the same power outlet and use quality shielded cables. If the problem continues, try isolating each device to find the source.

How can I improve the sound quality of my Rotel RB-985 MKII Amplifier?

Use high-quality interconnects and speaker cables, ensure proper speaker placement, and consider room acoustics. Regular maintenance and ensuring the amplifier is operating within its optimal range can also enhance sound quality.