Onkyo HT R640 Instruction Manual

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Year 2006

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Onkyo HT R640 Specification

The Onkyo HT-R640 is a robust home theater receiver designed to deliver high-quality audio and video performance for home entertainment systems. It features a 7.1-channel configuration, enabling surround sound that immerses users in a cinematic audio experience. The amplifier section outputs a substantial power of 130 watts per channel, ensuring clear and dynamic sound reproduction across a wide range of audio content.

Equipped with advanced processing capabilities, the HT-R640 supports Dolby Digital EX, DTS-ES, and Dolby Pro Logic IIx, providing versatile decoding options for various audio formats. This receiver includes multiple connectivity options, such as HDMI inputs and outputs, component video inputs, and digital audio inputs, allowing seamless integration with a variety of external devices like Blu-ray players, gaming consoles, and streaming devices.

The Onkyo HT-R640 is also designed with user convenience in mind, featuring an intuitive on-screen display for easy navigation and setup. It supports Audyssey 2EQ room calibration technology, which adjusts the audio output to suit the acoustics of the room, enhancing the overall listening experience. Additionally, the receiver includes an AM/FM tuner with 40 preset stations, expanding entertainment options.

The build quality of the HT-R640 reflects Onkyo's commitment to durability and performance, with a sleek design that complements modern home theater setups. Its versatility, combined with powerful audio processing and a comprehensive feature set, makes the Onkyo HT-R640 an excellent choice for enthusiasts seeking a high-performance audio-visual receiver for their home entertainment needs.

Onkyo HT R640 F.A.Q.

How do I reset the Onkyo HT-R640 receiver to factory settings?

To reset the Onkyo HT-R640 to factory settings, first, ensure the receiver is in standby mode. Then, press and hold the VCR/DVD button while pressing the ON/STANDBY button. The display should show "Clear," indicating the reset is complete.

What should I do if there is no sound through my Onkyo HT-R640 receiver?

First, check all cable connections to ensure they are secure. Verify that the correct input source is selected. Additionally, ensure that the mute function is not activated and the speaker configurations are set up correctly in the receiver's menu.

How can I update the firmware on my Onkyo HT-R640 receiver?

The Onkyo HT-R640 does not support firmware updates via USB or network as it is an older model. Please consult the Onkyo support website or contact customer service for any potential updates or assistance.

Why is my Onkyo HT-R640 overheating and shutting down?

Ensure the receiver is placed in a well-ventilated area and that vents are not blocked. Check for excessive dust build-up and clean if necessary. If the problem persists, consider using an external fan to improve airflow.

How do I connect my Onkyo HT-R640 to a TV?

Connect the HDMI output from the Onkyo HT-R640 to the HDMI input on your TV. If your TV does not support HDMI, use component or composite cables. Ensure the TV is set to the correct input source.

What is the correct speaker setup for the Onkyo HT-R640?

The Onkyo HT-R640 supports up to a 7.1-channel speaker setup. Position the speakers as follows: front left and right, center, surround left and right, surround back left and right, and subwoofer. Use the speaker setup menu to calibrate each speaker.

How do I program a universal remote to work with my Onkyo HT-R640 receiver?

Refer to the universal remote's manual to find the code for Onkyo receivers. Enter the code while the remote is in programming mode. Test the remote to ensure it controls the receiver functions.

How can I improve the sound quality of my Onkyo HT-R640?

Ensure speakers are positioned correctly according to your room's acoustics. Use the receiver's equalizer settings to adjust sound levels. Consider using higher-quality cables and speaker wires.

What should I do if the display on my Onkyo HT-R640 is not working?

Check if the dimmer function is activated by pressing the DIMMER button on the remote. If the display remains off, try unplugging the receiver for a few minutes before plugging it back in.

How do I connect Bluetooth devices to my Onkyo HT-R640?

The Onkyo HT-R640 does not have built-in Bluetooth capability. You can connect a Bluetooth adapter to one of the receiver's available inputs to stream audio from Bluetooth devices.