Denon AVR 991 Manual

The Denon AVR 991 is a high-performance 7.1 channel AV receiver that supports various audio and video formats, including Dolby TrueHD and DTS-HD Master Audio. It features advanced connectivity options, including HDMI inputs, network streaming, and multi-room audio capabilities. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: 7.1 channel surround sound, HDMI inputs, network streaming, multi-room audio, and advanced audio processing.

Feature	Description
HDMI Inputs	Multiple HDMI inputs for connecting various devices.
Network Streaming	Stream music and video from online services.
Multi-Room Audio	Distribute audio to different rooms.
Advanced Audio Processing	Supports Dolby TrueHD and DTS-HD Master Audio.
On-Screen Display	User-friendly interface for easy navigation.
Remote Control	Convenient control of all functions.
Calibration System	Automatic calibration for optimal sound.
Power Output	High power output for immersive sound experience.

Installation

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

1. Connect speakers: Use appropriate speaker wire for connections.
2. Connect video sources: Use HDMI cables for video input.
3. Connect to network: Use Ethernet or Wi-Fi for internet access.
4. Plug into AC power.

WARNING! Ensure all connections are secure to avoid damage.

First-Time Setup

Power on the receiver; follow on-screen prompts for initial setup.

1. Program channels automatically: Use the setup menu to scan for channels.
2. Set audio preferences: Adjust settings for optimal sound quality.
3. Configure network settings: Connect to your home network.
4. Update firmware: Check for updates to ensure the latest features.

CAUTION! Ensure stable surface; avoid overheating.

Specifications

• Channels: 7.1 channel surround sound.
• Power Output: 125W per channel.
• HDMI Inputs: 6 HDMI inputs.
• Audio Formats: Supports Dolby TrueHD, DTS-HD Master Audio.
• Network Connectivity: Ethernet and Wi-Fi.
• Dimensions: 17.1 x 14.5 x 6.3 inches.
• Weight: 24.3 lbs.
• Power Consumption: 600W max.

Controls and Settings

Access OSD via remote control or front panel. Key controls include POWER, INPUT, VOLUME, and MENU.

Remote: POWER, Numeric buttons, INPUT, VOLUME, MUTE, SETUP.

Audio settings: Adjust bass, treble, and balance. Video settings: Adjust brightness, contrast, and color.

Connecting Devices

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

1. Turn off the receiver and devices before connecting.
2. Match cables to ports (e.g., HDMI to HDMI).
3. 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.

1. Insert media: Use the appropriate input for your device.
2. Play: Select the media source using the remote.
3. Stop: Press STOP to halt playback.
4. Skip: Use PREV/NEXT for tracks.
5. Adjust volume: Use the VOLUME control on the remote.

WARNING! Do not force connections; handle media with care.

Accessibility Features

Supports closed captions and audio descriptions for enhanced accessibility.

Care & Cleaning

Unplug before cleaning. Use a soft, dry cloth; avoid liquids.

CAUTION! Do not use abrasive cleaners; keep away from moisture.

Regulatory Information

FCC Part 15: Class B digital device; complies with interference limits for residential use. Copyright © 2026 Denon; trademarks of Denon Electronics.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Remote does not work	Obstacles/batteries	Remove obstacles; point at IR sensor; install fresh batteries.
No sound	Connections/mute	Ensure receiver is on; check connections; adjust mute.
Picture not clear	Settings	Adjust video settings in the menu.
Channels not programming	Antenna/menu	Use auto-program in menu; ensure antenna connected.
Device not recognized	Connection issue	Check connections; restart the receiver.

Reset: Menu > System > Reset if available.

Service: 1-800-555-0199; www.denon.com