Denon AV Surround Receiver AVR-3805 Manual

The Denon AVR-3805 is a high-performance 7.1 channel AV surround receiver designed to deliver an immersive audio experience. It supports various audio formats, including Dolby Digital, DTS, and more. The receiver features multiple HDMI inputs, advanced video processing, and a range of connectivity options for all your home theater needs. 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, advanced audio processing, remote control, and multiple audio/video inputs.

Feature	Description
HDMI Inputs	Supports multiple HDMI sources for video and audio.
Multi-channel Audio	Delivers immersive surround sound experience.
Built-in DSP	Advanced digital signal processing for enhanced audio quality.
Remote Control	Convenient control of all functions from a distance.
Zone 2/Zone 3 Outputs	Allows audio playback in multiple rooms.
Auto Setup	Automatically calibrates audio settings based on room acoustics.
On-screen Display	Easy navigation through settings and options.
Power Output	High power output for driving large speakers.

Installation

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

1. Connect speakers: Use appropriate speaker wire for connections.
2. Connect video sources: Use HDMI or component video cables.
3. Connect to power: Plug into a grounded AC outlet.
4. Ensure all connections are secure before powering on.

WARNING! Receiver is heavy; lift with care to avoid injury.

First-Time Setup

Power on the receiver; follow on-screen prompts to configure settings.

1. Set speaker configuration: Use the setup menu to configure speaker sizes and distances.
2. Program inputs: Assign names to each input for easy identification.
3. Adjust audio settings: Set levels for each channel using the test tone feature.
4. Save settings: Ensure all configurations are saved before exiting the setup menu.

CAUTION! Ensure stable surface; use two people for handling if necessary.

Specifications

• Channels: 7.1 channel surround sound.
• Power Output: 120 watts per channel (8 ohms).
• Audio Formats: Dolby Digital, DTS, PCM, and more.
• Video Inputs: 4 HDMI inputs, 2 component video inputs.
• Dimensions: 17.1" x 5.9" x 15.4".
• Weight: 25.3 lbs.
• Power Consumption: 600 watts (maximum).
• Operating Temperature: 0°C to 40°C.

Controls and Settings

Access settings via the on-screen display or front panel controls. Key controls include: POWER, INPUT SELECTOR, VOLUME, and MENU.

Remote: POWER, INPUT, VOLUME, MUTE, and various audio mode buttons.

Audio settings: Adjust bass, treble, and balance. Video settings: Configure picture settings for HDMI and component video.

Connecting Devices

Connect various audio and video devices using HDMI, optical, and analog inputs.

1. Turn off all devices before connecting.
2. Match cables to ports (e.g., HDMI to HDMI).
3. Select input via the INPUT SELECTOR on the remote or front panel.

Tip: Ensure all connections are secure to avoid signal loss.

Playing Audio/Video Media

Supports various media formats through connected devices.

1. Select input source: Use the INPUT SELECTOR to choose the desired source.
2. Adjust volume: Use the VOLUME control to set the desired listening level.
3. Access audio settings: Use the remote to adjust audio modes and settings.

WARNING! Avoid high volume levels to prevent speaker damage.

Accessibility Features

Closed Captions: Enable in the audio settings menu. Parental Controls: Block content based on ratings in the setup menu.

Care & Cleaning

Unplug before cleaning. Use a soft, dry cloth to wipe the exterior; 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	Input selection/menu	Ensure correct input is selected; check connections.
Device not recognized	Connection issue	Check cable connections; try a different port.

Reset: Menu > System > Reset if available.

Service: Contact Denon support for assistance.