Denon AVR 681 Manual

The Denon AVR 681 is a versatile 7.1 channel AV receiver designed to deliver high-quality audio and video performance. It supports various surround sound formats, including Dolby Digital and DTS, and features multiple HDMI inputs for connecting your devices. The receiver also includes advanced audio processing technologies, customizable settings, and a user-friendly interface for easy operation. 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. Playing Audio/Video Media 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: 7.1 channel audio, HDMI inputs, Dolby Digital and DTS support, remote control, customizable audio settings.

Feature	Description
HDMI Inputs	Multiple inputs for connecting various devices
Audio Formats	Supports Dolby Digital, DTS, and more
Zone 2 Output	Allows for multi-room audio setup
On-Screen Display	User-friendly interface for easy navigation
Customizable EQ	Adjust audio settings to personal preference
Remote Control	Convenient control of all functions

Installation

Unpack and inspect contents. Place the receiver on a stable surface.

Connect speakers: Use appropriate speaker wire for connections.
Connect video sources: Use HDMI or composite connections for video.
Plug into AC power.

WARNING! Ensure all connections are secure to avoid damage.

First-Time Setup

Power on the receiver; follow on-screen prompts.

Program channels automatically: Use the setup menu to configure settings.
Set audio preferences: Adjust settings in the audio menu.
For video: Ensure correct input is selected for your display.

CAUTION! Ensure stable surface; avoid overheating.

Specifications

Channels: 7.1 channel audio.
Power Output: 100 watts per channel.
Audio Formats: Supports Dolby Digital, DTS, and more.
HDMI Inputs: 4 HDMI inputs for versatile connectivity.
Zone 2 Output: Yes, for multi-room audio.
Dimensions: 17.1 x 13.4 x 6.3 inches.
Weight: 22.5 lbs.

Controls and Settings

Access OSD via remote control or front panel buttons. Key controls include power, volume, input selection, and menu navigation.

Remote: Includes buttons for quick access to audio settings, input selection, and more.

Connecting Devices

Connect various devices using HDMI, optical, or RCA connections.

Turn off the receiver and devices before connecting.
Match cables to ports (e.g., HDMI to HDMI).
Select input via remote control.

Tip: Ensure all devices are powered off before making connections.

Playing Audio/Video Media

Supports various audio and video formats.

Insert media: Use appropriate input for playback.
Play: Use remote control to start playback.
Stop: Press STOP on the remote.
Skip: Use NEXT/PREV buttons for tracks.

WARNING! Do not force media into the receiver; use proper formats.

Accessibility Features

Closed captions and audio descriptions can be enabled in the settings menu.

Care & Cleaning

Unplug before cleaning. Use a dry cloth only; avoid liquids.

CAUTION! Do not spray liquids; keep away from heat and moisture.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. For support, visit www.denon.com or contact customer service.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Remote does not work	Obstacles/batteries	Remove obstacles; replace batteries.
No sound	Connections/mute	Check connections; ensure mute is off.
Picture not clear	Settings	Adjust video settings in the menu.
Channels not programming	Antenna/menu	Use auto-program in menu; ensure antenna connected.
Media not playing	Format/loading	Ensure media is compatible; reload if necessary.

Reset: Menu > System > Reset if available.

Service: Visit www.denon.com for support.