Manual for a Kenwood 631

The Kenwood 631 is a high-performance audio receiver featuring multi-zone audio capabilities, digital signal processing, HDMI connectivity, network streaming, AM/FM tuner, Bluetooth compatibility, and advanced audio calibration. With 7.2 channel surround sound, 4K video pass-through, and intuitive control interfaces, this receiver delivers premium home theater experience. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Connecting Devices 7. Network and Streaming 8. Multi-Zone Audio 9. Care & Maintenance 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 7.2 channel amplifier, HDMI inputs/outputs, Network connectivity, Bluetooth, AM/FM tuner, Multi-zone audio, Remote Control, Front panel display.

Feature	Description
HDMI Inputs	6 HDMI inputs with 4K/60p pass-through
Network Connectivity	Ethernet and Wi-Fi for streaming services
Bluetooth	Wireless audio streaming from compatible devices
Multi-zone Audio	Independent audio in two separate zones
AM/FM Tuner	40 station presets with auto-scan
Audio Calibration	Automatic room acoustic correction
Speaker Terminals	Banana plug compatible 7.2 channel outputs
Remote Control	Full-function learning remote
Display	Front panel fluorescent display
Power Output	100W per channel (8 ohms, 20Hz-20kHz)

Installation

Unpack and inspect contents. Ensure proper ventilation around unit.

Connect speakers: Match polarity (+/-) to corresponding terminals.
Connect HDMI devices: Use HDMI inputs for source components.
Connect TV: Use HDMI OUT to main television.
Connect antenna: Attach AM loop and FM wire antennas.
Plug into AC power.

WARNING! Ensure adequate ventilation space around unit. Do not block ventilation openings.

First-Time Setup

Power on receiver; follow on-screen setup wizard.

Run audio calibration: Use included microphone for room acoustic optimization.
Set speaker configuration: Specify speaker sizes and distances.
Connect to network: Configure Wi-Fi or Ethernet connection.
Update firmware: Check for latest software updates.
Configure inputs: Assign names to HDMI inputs.

CAUTION! Keep magnetic devices away from speakers during setup.

Specifications

Amplifier Section: 7.2 channels, 100W per channel (8 ohms)
HDMI: 6 inputs, 2 outputs (Main/Sub), 4K/60p, HDR10, Dolby Vision
Audio Formats: Dolby Atmos, DTS:X, Dolby TrueHD, DTS-HD Master Audio
Network: Ethernet, Wi-Fi (2.4GHz/5GHz), Bluetooth 4.2
Streaming: Spotify Connect, AirPlay 2, Chromecast built-in
Tuner: AM/FM with RDS
Multi-zone: Zone 2 pre-out, independent source selection
Power Consumption: 450W (maximum), 0.5W (standby)
Dimensions: 17.1" W × 6.8" H × 15.4" D
Weight: 25.4 lbs

Controls and Settings

Access menu via front panel or remote control. Front Panel: POWER, INPUT SELECT, VOLUME, TONE, SETUP.

Remote: POWER, INPUT SELECT, VOLUME, MUTE, MENU, Navigation buttons, Numeric keypad, Sound Mode selection.

Audio Settings: Speaker levels, crossover frequencies, distance settings, equalizer. Video Settings: HDMI resolution, color space, deep color. Network Settings: Wi-Fi setup, firmware update, streaming services. System Settings: Language, auto standby, HDMI control.

Connecting Devices

HDMI: Main and sub outputs. Analog: RCA audio inputs. Digital: Optical/Coaxial inputs. Network: Ethernet port.

Turn off receiver and devices before connecting.
Use high-speed HDMI cables for 4K content.
Assign appropriate input names for easy identification.
Connect network cable for firmware updates and streaming.

Tip: Use quality speaker wire (16-gauge or thicker) for best performance.

Network and Streaming

Supports various streaming services and network audio.

Network setup: Connect via Ethernet or configure Wi-Fi in network settings.
Streaming services: Access Spotify, Pandora, Tidal through receiver interface.
Bluetooth pairing: Put receiver in pairing mode, select from device list.
AirPlay/Chromecast: Stream directly from compatible apps.
Internet radio: Access thousands of online radio stations.

WARNING! Ensure stable network connection for uninterrupted streaming.

Multi-Zone Audio

Zone 2 operation for independent audio in second room.

Connect Zone 2 speakers to designated terminals.
Select Zone 2 source independently from main zone.
Control volume separately for each zone.
Use remote in Zone 2 with IR extender if needed.

Note: Some audio formats may not be available in Zone 2.

Care & Maintenance

Unplug before cleaning. Use soft, dry cloth for exterior. Clean ventilation openings regularly.

CAUTION! Do not use liquid cleaners or aerosols. Avoid moisture near electrical components.

Regulatory Information

FCC Part 15: Class B digital device compliant. CE marked for European market. RoHS compliant. Copyright © 2023 Kenwood; trademarks of JVCKenwood Corporation. For support, visit www.kenwood.com or contact 1-800-536-9663.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No power	Power cord/outlet	Check power connection; ensure outlet is working.
No sound	Speaker connections/mute	Verify speaker wires; check mute status; confirm input selection.
No video	HDMI connection	Check HDMI cables; ensure correct input selected; try different HDMI port.
Network issues	Connection settings	Verify network credentials; restart router; check Ethernet connection.
Remote not working	Batteries/obstacles	Replace batteries; ensure clear line of sight to IR sensor.
Overheating	Ventilation	Ensure adequate ventilation space; clean ventilation openings.

Reset: Press and hold POWER + TONE for 5 seconds to factory reset.

Service: 1-800-536-9663; www.kenwood.com