Denon DRA 685 Receiver Manual

The Denon DRA 685 is a high-performance stereo receiver that delivers exceptional audio quality for music enthusiasts. It features a robust amplifier, multiple input options, and advanced sound processing technologies. 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 Media 8. Accessibility Features 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: High-performance amplifier, multiple audio inputs, remote control, headphone jack, and advanced audio processing.

Feature	Description
High-performance amplifier	Delivers clear and powerful sound
Multiple audio inputs	Supports various audio sources including CD, vinyl, and digital
Headphone jack	For private listening
Remote control	Convenient operation from a distance
Audio processing	Advanced sound enhancement features

Installation

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

Connect speakers: Use the speaker terminals on the back panel.
Connect audio sources: Use RCA or optical inputs for various devices.
Plug into AC power.

WARNING! Ensure all connections are secure to avoid damage.

First-Time Setup

Power on the receiver; follow on-screen prompts.

Select input source: Use the INPUT button on the remote.
Adjust audio settings: Access the setup menu for sound preferences.
For radio: Tune to desired stations using the tuning buttons.

CAUTION! Ensure stable surface; avoid overheating.

Specifications

Power Output: 75 watts per channel (8 ohms).
Audio Inputs: 5 x RCA, 1 x Optical, 1 x Coaxial.
Frequency Response: 20 Hz - 20 kHz.
Signal-to-Noise Ratio: 100 dB.
Dimensions: 17.1 x 5.5 x 13.4 inches.
Weight: 20.5 lbs.
Power Source: 120V AC, 60Hz.

Controls and Settings

Access OSD via remote control. Front Panel: POWER, INPUT, VOLUME, TUNING.

Remote: POWER, INPUT, VOLUME, TUNING, MENU, and more.

Audio: Adjust bass, treble, balance, and loudness settings. Access radio presets and input selection easily.

Connecting Devices

Connect speakers and audio sources using the appropriate cables.

Turn off the receiver and devices before connecting.
Match cables to ports (e.g., RCA to audio inputs).
Select input via INPUT button on the remote.

Tip: Ensure all connections are secure to avoid audio issues.

Playing Audio Media

Supports various audio formats including CD, vinyl, and digital audio.

Insert media: Load CD or connect digital device.
Play: Use the PLAY button on the remote.
Stop: Press STOP to halt playback.
Skip: Use PREV/NEXT for tracks.

WARNING! Do not force media into the slot; handle with care.

Accessibility Features

Closed Captions: Enable in audio settings if supported. Parental Controls: Block certain content if necessary.

Care & Cleaning

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

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

Regulatory Information

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.
Audio distortion	Settings	Adjust bass/treble settings; check speaker connections.
Channels not programming	Input selection	Ensure correct input is selected; check connections.

Reset: Menu > System > Reset if available.

Service: Contact Denon support for assistance.