onkyo tx nr656 user manual
The Onkyo TX‑NR656 is a versatile AV receiver that blends classic design with modern connectivity. This user manual guides you through setup‚ component placement‚ and advanced audio‑video settings‚ ensuring optimal performance for home theater enthusiasts. Use this calibrate sound and enjoy cinema!
Safety Precautions
Before powering on the Onkyo TX‑NR656‚ read all safety instructions carefully. Keep the receiver in a dry‚ well‑ventilated area away from direct sunlight‚ heat sources‚ and moisture. Ensure the power cord is connected to a grounded outlet and that outlet is not overloaded. Do not touch exposed metal parts while the unit is powered. Avoid using extension cords or power strips that exceed the rated capacity. Keep the device out of reach of children and pets. Do not attempt to disassemble the receiver without professional assistance. If you notice any abnormal noise‚ smell‚ or heat‚ turn off the unit and disconnect the power immediately. Do not use the receiver in damp environments or near water. Do not expose the unit to dust or debris that could clog ventilation. Keep the device away from flammable materials. In case of a power surge‚ unplug the receiver immediately. Do not use the receiver as a charging station for other devices. Do not expose the power button to moisture. Do not modify the firmware or hardware. The receiver is not designed for use in hazardous environments such as industrial settings or near flammable gases. Always follow local regulations for disposal of electronic equipment. The receiver contains electronic components that may generate heat during operation; ensure that ventilation openings remain unobstructed. Do not cover the rear fan or front grille. Place the unit on a stable‚ flat surface and avoid stacking heavy objects on top. If the receiver is used in a location with high humidityor extrem
Device Overview
The Onkyo TX‑NR656 is a 7.2‑channel AV receiver featuring 120 W per channel‚ Dolby Atmos‚ DTS:X‚ and 4K HDR support. It offers HDMI 2.1‚ Wi‑Fi‚ Bluetooth‚ and a user‑friendly front panel for quick access to audio‑video settings. Ideal for home theater upgrades. Connect via HDMI for 4K HDR enjoy sound.
3.1 Physical Components
The Onkyo TX‑NR656’s chassis is a robust‚ matte‑black metal enclosure measuring 17.6 inches wide‚ 7.5 inches tall‚ and 4.2 inches deep‚ weighing approximately 15 lbs. The front panel hosts a 3‑row LED display‚ a 12‑button rotary selector‚ and a dedicated “Setup” button for quick access to the on‑screen menu. Below the display‚ a 2‑row matrix of 3‑pin speaker terminals supports 5.25‑inch binding posts for left‚ center‚ right‚ and two sub‑woofer outputs‚ while a separate 3‑pin binding post accommodates the rear pair. The rear panel is a 12‑port hub: four HDMI 2.1 inputs (one 4K/120 Hz‚ three 4K/60 Hz)‚ two HDMI 2.1 outputs (one 4K/120 Hz‚ one 4K/60 Hz)‚ one HDMI ARC‚ one HDMI eARC‚ one optical (TOSLINK)‚ one coaxial (S/PDIF)‚ a USB‑A input‚ a USB‑B input‚ a 3.5 mm headphone jack‚ a 5‑V DC power inlet‚ and a 3‑pin speaker terminal for the rear pair. The power supply is a 100‑240 V AC‚ 50/60 Hz‚ 2‑A adapter‚ rated at 200 W. The unit’s rear ventilation slots are positioned along the top edge‚ ensuring airflow when mounted on a wall or placed on a shelf. The receiver’s back panel also features a 3‑pin “B‑S” connector for a balanced audio input‚ a 3‑pin “S‑S” for a stereo line‑in‚ and a 3‑pin “S‑S” for a stereo line‑out‚ allowing flexible integration with external amplifiers or mixers. The device’s dimensions and mounting holes are designed to fit standard AV racks‚ with a 1‑inch mounting rail on the rear. The TX‑NR656’s physical design balances durability with a compact footprint‚ making it suitable for both home theater setups and professional installations. Cable management is facilitated by the rear panel’s integrated cable ties and a cable routing channel‚ allowing neat organization of HDMI‚ optical‚ and power cords!Thanks now!
Power and Cable Connections
Connect the TX‑NR656 to a 100‑240 V AC outlet using the supplied 2‑A adapter. Attach HDMI cables to the rear HDMI ports‚ optical or coaxial for audio‚ and a 3.5 mm jack for headphones. Ensure all cables are seated firmly and routed neatly. All connections secure
4.1 Power Supply
The Onkyo TX‑NR656 uses a 100‑240 V AC input and comes with a 2‑A power adapter. Its internal supply is a switched‑mode design that delivers clean‚ stable voltage to the amplifier‚ processor‚ and network modules. Before connecting‚ ensure the outlet is grounded and the power cord is free of kinks. The adapter’s polarity is marked on the plug; inserting it incorrectly will trigger a built‑in protection circuit that shuts the receiver off. Once powered‚ the front panel displays a green LED indicating normal operation. If the LED remains off or flashes‚ check the cable for damage‚ verify the outlet supplies the correct voltage‚ and confirm the adapter’s rating matches the device’s 2‑A requirement. The TX‑NR656 also supports a 12‑V DC input for external power supplies. In this mode‚ the DC connector is located on the rear panel; the input must be a regulated 12‑V source with a minimum current of 2 A. The receiver will automatically detect the DC input and bypass the AC adapter. For safety‚ always disconnect the power before performing any internal maintenance or replacing the power supply. The device’s power consumption is approximately 200 W during peak operation‚ with an idle draw of 10 W. Proper ventilation around the rear vent is essential to prevent overheating. The power supply’s efficiency is rated at 85 % under typical load conditions‚ which helps reduce heat output and energy consumption. The Onkyo TX‑NR656’s power circuitry includes over‑current protection‚ short‑circuit protection‚ and over‑voltage protection to safeguard the internal components. These features ensure reliable operation in a variety of environments‚ from home theaters to professional setups. For troubleshooting power issues‚ consult the troubleshooting section or contact Onkyo support. The user manual also provides a schematic diagram of the power supply for advanced users who wish to replace or repair the unit. All power connections are designed to meet international safety standards‚ and the device is certified for use in North America‚ Europe‚ and Asia. By following these guidelines‚ users can maintain the receiver’s performance and extend its lifespan; Keep the power cable away from heatand moisture for long‑term reliability today.
4.2 Audio/Video Inputs
The Onkyo TX‑NR656 provides a versatile set of audio and video inputs to suit both modern and legacy devices. The rear panel includes two HDMI‑ARC ports that support 4K HDR10‚ Dolby Vision‚ and eARC for high‑bandwidth audio. Three additional HDMI inputs deliver full 1080p and 4K compatibility. For older equipment‚ a component video (YPbPr) and a composite video (RCA) input are available. Digital audio can be routed through two optical (TOSLINK) ports and two coaxial inputs‚ each handling Dolby Digital‚ DTS‚ and PCM. The front panel offers a headphone jack for private listening‚ while a 3.5‑mm stereo input on the rear allows connection of portable devices. A USB‑A port supports audio playback from flash drives and firmware updates. Bluetooth streaming is also supported‚ enabling wireless audio from smartphones or tablets. For professional use‚ the receiver features two 3‑1/4‑inch balanced XLR inputs and two 1‑/4‑inch TRS inputs‚ suitable for line‑level connections to mixers or audio interfaces. Each input has a dedicated label and volume knob on the front panel‚ giving precise control. The device automatically detects input formats and applies the correct audio decoding‚ whether stereo‚ 5.1‚ or 7.1 surround. Users can override auto‑detect via the on‑screen menu to select a specific channel format. All inputs are protected by surge suppression to guard against power spikes. The input selection logic prioritizes HDMI sources‚ then component‚ composite‚ and digital audio‚ ensuring the correct source is displayed. The receiver’s firmware also supports manual channel selection for each input. The input matrix allows simultaneous playback of multiple sources‚ with easy switching via remote or front‑panel buttons. This flexibility makes the TX‑NR656 ideal for multi‑room setups or users who switch between Blu‑ray players‚ game consoles‚ and streaming devices without changing cables. For wiring diagrams and pinouts‚ consult the technical specifications section of the manual.
Network and Firmware Setup
Connect the TX‑NR656 to Wi‑Fi via the on‑screen menu‚ then update firmware through the “System Update” option. Use the USB port for manual updates‚ and enable DLNA for streaming. Ensure the router supports 802.11ac for optimal performance.
Keep firmware current.!!
5.1 Wi‑Fi Configuration
Press the “Setup” button on the front panel‚ go to “Network Settings‚” and select “Wi‑Fi Setup.” Choose “Auto‑Scan” to list SSIDs; highlight your network and tap “OK.” If the network is hidden‚ pick “Manual Entry‚” type the SSID‚ choose the security type (WPA2‑PSK or WPA3‑PSK)‚ and enter the password. A green LED confirms a successful connection. For best streaming‚ use the 2.4 GHz band if the receiver’s firmware supports dual‑band; otherwise‚ switch to 5 GHz. Adjust the “Channel” setting to avoid interference. If the connection fails‚ check that the router’s MAC filter is disabled or add the receiver’s MAC address. The TX‑NR656 also offers “Wi‑Fi Direct” for peer‑to‑peer streaming; enable it under “Advanced Settings” and pair with compatible devices. Once connected‚ use “DLNA” and “AirPlay” to stream from phones‚ tablets‚ or PCs. For firmware updates‚ go to “System Update” and select “Wi‑Fi Update” to download the latest software. Keep the firmware current to stay compatible with new streaming services and security protocols. If you notice latency or buffering‚ move the receiver closer to the router or use a Wi‑Fi extender. The built‑in “Signal Strength” meter helps locate weak spots and guides optimal placement. Follow these steps to enjoy seamless wireless connectivity and high‑quality audio‑visual playback on the TX‑NR656.
Audio Settings
Use the TX‑NR656’s Audio menu to set your sound profile. Choose a Sound Mode (Standard‚ Movie‚ Music‚ etc.) and adjust the EQ presets. In Speaker Setup‚ select speaker types and distances. Balance and Fade controls fine‑tune left‑right output. Enable Dolby Digital or DTS for surround. Enjoy now.!!!
6.1 Sound Modes and EQ
Onkyo TX‑NR656 offers a range of preset sound modes that cater to different listening environments. The Standard mode delivers balanced audio‚ ideal for everyday use. Movie mode enhances dialogue clarity and deepens low‑frequency impact‚ creating an immersive cinema experience. Music mode optimizes treble and mid‑range‚ providing a natural‚ studio‑like sound. The Bass Boost and Treble Boost modes allow you to tailor the low‑and high‑frequency response to your preference or room acoustics. For those who enjoy a more cinematic feel‚ the Dolby Digital and DTS modes activate the receiver’s decoding capabilities‚ delivering multi‑channel surround sound from compatible sources. Each mode can be further refined using the built‑in equalizer. The TX‑NR656’s graphic EQ lets you adjust 10 frequency bands in 1‑dB increments‚ giving precise control over the tonal balance. You can also use the parametric EQ to target specific frequencies for fine‑tuning. The “Auto” setting automatically selects the best mode based on the input source‚ while the “Manual” option lets you lock in your chosen mode. Remember to calibrate your speaker system with the Onkyo Setup Wizard before applying EQ adjustments for optimal performance. Experiment with these settings to find the perfect sound signature for your home theater setup. Additionally‚ the receiver includes a “Surround” mode that simulates a 5.1 or 7.1 layout even with fewer speakers‚ and a “Dynamic” mode that boosts low‑end punch for action scenes. The “Night” mode reduces high‑frequency content to protect hearing during late‑night listening. Use the “Sound Effect” presets for sports‚ news‚ or classic movie styles‚ each adjusting the EQ and speaker delay for the best immersive experience. Finally‚ the “User” mode allows you to create a custom profile by saving your preferred EQ and tone settings for quick switching between different listening scenarios. The TX‑NR656 also supports a “True‑Bass” mode that enhances low‑frequency response for bass‑heavy music‚ and a “V‑SOUND” mode that delivers a virtual surround effect using only two speakers. The “Audio‑Control” feature lets you set individual speaker levels‚ ensuring that each channel is balanced to your listening room. For advanced users‚ the “DSP” menu offers a range of tone‑control options‚ including a 5‑band graphic EQ and a 3‑band parametric EQ‚ providing fine‑grained adjustments. The receiver’s firmware can be updated via USB or network‚ ensuring you always have the latest audio improvements and bug fixes. By combining these modes and EQ settings‚ you can tailor the TX‑NR656 to match any room size‚ speaker placement‚ or personal preference‚ achieving professional‑grade sound quality at home.
Video Settings
The TX‑NR656 supports 4K HDR10‚ Dolby Vision‚ and HDR10+. Adjust Picture Mode (Standard‚ Cinema‚ Game) and set resolution to 3840×2160. Enable Dynamic Contrast‚ Color Temperature‚ and Sharpness. Use the Advanced Video menu to tweak gamma‚ black level‚ and upscaling for optimal image quality. Enjoy.!
7.1 Picture Modes and Resolution
Onkyo TX‑NR656 offers a range of picture modes designed for various viewing preferences. The Standard mode delivers balanced color and contrast for everyday viewing‚ while the Cinema mode enhances depth and realism with a muted palette and increased dynamic range. The Game mode reduces input lag and sharpens motion‚ making it ideal for competitive play. Sports mode boosts brightness and motion clarity‚ ensuring fast action stays crisp. Custom mode allows users to fine‑tune hue‚ saturation‚ brightness‚ and sharpness to personal preference. Each mode can be paired with a specific resolution setting: 1080p for full HD sources‚ 4K (3840×2160) for Ultra HD content‚ and 720p for older devices. The receiver automatically detects the input resolution and applies the best matching picture mode‚ but manual override is available through the on‑screen menu. Users can also enable HDR10‚ Dolby Vision‚ and HDR10+ support‚ which automatically adjust the picture mode to accommodate high dynamic range signals. For optimal image quality‚ it is recommended to calibrate the display using built‑in calibration tools or an external colorimeter. The TX‑NR656’s advanced upscaling engine ensures that lower‑resolution sources are smoothly enhanced to 4K‚ preserving detail and reducing artifacts. By selecting the appropriate picture mode and resolution‚ users can experience the full visual potential of their home theater system. The system’s flexibility lets users adjust picture settings to match lighting and taste‚ ensuring immersive viewing
Troubleshooting and FAQ
Power: If the TX‑NR656 does not power on‚ check the mains cable and outlet. A blown internal fuse can be replaced; reset by holding the power button for 10 s until the indicator blinks.
No Signal: Loose HDMI or component cables often cause “No Signal.” Ensure all cables are firmly seated and try a different HDMI cable if the problem persists.
Audio Drop‑Out: Verify speaker impedance matches the receiver’s setting (4 Ω‚ 8 Ω‚ 16 Ω). Check speaker cables for damage or loose connections.
Firmware Update: Place the extracted firmware file on a FAT32 drive‚ insert it‚ and select “System > Firmware Update.” Do not interrupt the process once it starts.
HDMI Handshake: Disable HDMI‑CEC on both devices‚ then re‑enable. If errors continue‚ set the HDMI port to “Auto” or “Manual” in the receiver’s settings;
FAQ: Q: How to enable 4K HDR passthrough? A: Set HDMI port to “HDMI‑ARC” and enable “HDR Passthrough” in the Video menu. Q: Why does the receiver mute after a power outage? A: Press the power button to wake it from standby.
Common connectivity issues may arise when using older HDMI cables or devices that lack HDCP 2.2 support. Upgrading to certified 18 Gbps cables and ensuring both source and receiver firmware are current typically resolves these problems. For optimal picture quality‚ enable “HDMI‑ARC” only on the port connected to the TV’s HDMI‑ARC input and disable any unused HDMI ports to prevent interference. (updated 2026).
Warranty and Support
Onkyo offers a limited 2‑year warranty on the TX‑NR656‚ covering manufacturing defects and parts. The warranty is valid only for the original purchaser and must be registered within 30 days of purchase. Registration can be completed online via the Onkyo website or by mailing the proof of purchase to the customer service department. The warranty does not cover damage from power surges‚ improper installation‚ or misuse. For power‑related issues‚ consult the surge‑protection guidelines in the user manual. If a defect is detected‚ receiver can be repaired or replaced at a service center authorized Onkyo. The repair process typically takes 7–10 business days‚ during which a loaner unit may be provided. Shipping to the service center is the customer’s responsibility of the unit during shipping and now. For firmware updates‚ download the latest version from the official Onkyo support page and follow the instructions in the manual. If you encounter problems during the update‚ contact technical support via email at support@onkyo.com or call 1‑800‑ONKYO (1‑800‑656‑7464) for assistance or send a ticket! Technical support is available Monday‑Friday‚ 9 a.m. to 6 p.m. local time. For international customers‚ support hours are adjusted to the local time zone. In addition to the standard warranty‚ Onkyo offers extended protection plans that can be purchased through authorized retailers. These plans cover accidental damage‚ extended coverage‚ and priority repair services. For more details‚ visit the Onkyo website or contact your dealer. All service requests must be accompanied by the original receipt and a detailed description of the issue. Failure to provide these documents may delay the repair process. Finally‚ keep the receiver’s serial number and model number handy for all inquiries. The serial number can be found on the back panel of the unit and is required for warranty verification and service authorization. By following these guidelines‚ you can ensure that your TX‑NR656 remains in optimal condition and that any issues are resolved efficiently and professionally.