Onkyo A 9355, A 9155 Instruction Manual

Pages 20

Year 2007

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Onkyo A 9355, A 9155 Specification

The Onkyo A-9355 and A-9155 are integrated stereo amplifiers designed to deliver high-quality audio performance for audiophiles and casual listeners alike. The A-9355 is distinguished by its utilization of Onkyo's proprietary Vector Linear (VL) Digital technology, which enhances audio fidelity by minimizing distortion across a wide frequency range. This model features a robust power output, capable of delivering 85 watts per channel into 4 ohms, which ensures dynamic and powerful sound reproduction suitable for a variety of speaker systems.

In contrast, the A-9155 offers a more traditional analog amplification approach and is rated at 65 watts per channel into 4 ohms. It is engineered to provide a clear and detailed audio experience, making it an excellent choice for users seeking a balance between performance and simplicity. Both amplifiers are equipped with a range of connectivity options, including multiple audio inputs for CD players, tuners, and other components, as well as a phono input for vinyl enthusiasts. The front panel of each model features user-friendly controls for volume, bass, treble, and balance adjustments, allowing for personalized sound calibration.

The design of the A-9355 emphasizes modern aesthetics with a sleek aluminum front panel, while the A-9155 maintains a classic appearance with a durable, understated finish. Both amplifiers incorporate high-quality components and construction, reflecting Onkyo's commitment to reliability and longevity in audio equipment. Overall, the A-9355 and A-9155 cater to different preferences within the audio community, providing versatile options for enhancing home audio systems with exceptional sound quality and design.

Onkyo A 9355, A 9155 F.A.Q.

How do I connect speakers to the Onkyo A-9355 amplifier?

To connect speakers to the Onkyo A-9355, ensure that the amplifier is turned off. Connect the speaker cables to the corresponding terminals on the amplifier, matching the positive (+) and negative (-) terminals with those on the speakers. Once connected, ensure the connections are secure before powering on the amplifier.

What is the proper way to clean and maintain my Onkyo A-9155 amplifier?

To clean the Onkyo A-9155, turn off and unplug the unit. Use a soft, dry cloth to wipe the exterior. Avoid using volatile liquids such as alcohol, thinner, or insecticide as they may damage the finish. Ensure that the ventilation holes are not obstructed to maintain optimal performance.

How can I troubleshoot no sound output from my Onkyo A-9355?

If there's no sound output from the Onkyo A-9355, check if the speakers are properly connected and the speaker selector is set correctly. Ensure the input source is active and the volume is turned up. Also, check that the mute function is not engaged and that headphones are not plugged in.

What should I do if my Onkyo A-9155 keeps shutting off unexpectedly?

If your Onkyo A-9155 is shutting off unexpectedly, it may be due to overheating or a short circuit. Ensure that the unit is well-ventilated and not placed in a confined space. Check all speaker wires for shorts and ensure they are not touching each other.

Can I use the Onkyo A-9355 with a turntable?

Yes, you can use the Onkyo A-9355 with a turntable. Connect the turntable to the dedicated phono input on the amplifier. Ensure that your turntable has a built-in preamp or use an external phono preamp if necessary.

How do I reset the Onkyo A-9155 to factory settings?

To reset the Onkyo A-9155 to factory settings, turn off the amplifier. While holding down the “CD” and “Speaker A/B” buttons, press the “Power” button. This will reset the unit to its original settings.

What is the recommended speaker impedance for the Onkyo A-9355?

The recommended speaker impedance for the Onkyo A-9355 is between 4 to 16 ohms. Ensure that the speakers you connect fall within this range to avoid damaging the amplifier.

How can I improve the sound quality of my Onkyo A-9155 system?

To improve the sound quality of your Onkyo A-9155, consider positioning the speakers correctly, ensuring they are at ear level and equidistant from the listening area. Use high-quality speaker cables and interconnects. Also, ensure that the amplifier is on a stable surface to minimize vibrations.

Why is there a humming noise coming from my Onkyo A-9355?

A humming noise from the Onkyo A-9355 may be due to a ground loop issue. Ensure all connected devices are plugged into the same power outlet to prevent this. If the problem persists, consider using a ground loop isolator or checking the grounding of your turntable if connected.

Can I connect headphones to my Onkyo A-9155?

Yes, you can connect headphones to the Onkyo A-9155. Simply plug the headphones into the headphone jack located on the front panel of the amplifier. The speakers will automatically mute when headphones are connected.