Bose AV 48 User Manual

The Bose AV 48 is a high-performance home theater audio/video receiver featuring Dolby Digital and DTS decoding, multi-zone audio capabilities, HDMI switching, AM/FM tuner, and compatibility with various audio/video sources. It delivers immersive surround sound, supports multiple input devices, and offers intuitive setup via on-screen display. Below are key sections for safety, features, installation, setup, operation, and troubleshooting.

Features at a Glance

Key components: Main unit with integrated amplifier, Remote Control, HDMI ports, Speaker terminals, Antenna connectors, Audio/Video input jacks.

Feature	Description
HDMI Inputs/Outputs	For high-definition video and audio connection
Optical/Coaxial Digital Inputs	For digital audio sources
Multi-Zone Audio Output	For second room audio playback
AM/FM Tuner	Built-in radio with preset memory
Speaker Terminals	For connecting up to 7.1 channel speakers
Remote Control Sensor	For wireless remote operation
POWER	Turns receiver on/off
INPUT SELECT	Cycles through audio/video sources
VOLUME	Adjusts audio level
MUTE	Mutes sound temporarily

Installation

Unpack and inspect contents. Place on well-ventilated surface.

1. Connect speakers: Match polarity (+/-) to speaker terminals.
2. Connect video sources: Use HDMI ports for modern devices; component/composite for legacy devices.
3. Connect audio sources: Use digital optical/coaxial or analog RCA inputs.
4. Connect antennas: Attach AM loop and FM wire antennas.
5. Plug into AC power.

WARNING! Ensure proper ventilation; do not block vents. Use appropriate speaker wire gauge.

First-Time Setup

Power on receiver; follow on-screen setup wizard.

1. Speaker configuration: Run auto-calibration or manually set speaker sizes/distances.
2. Input assignment: Assign sources to specific input buttons.
3. Radio presets: Auto-scan and save AM/FM stations.
4. Audio settings: Configure decoding modes (Dolby Digital, DTS, etc.).
5. Network setup: Connect to home network if applicable.

CAUTION! Disconnect power before making speaker connections.

Specifications

• Audio Power: 100 watts per channel (8 ohms).
• Audio Decoding: Dolby Digital, DTS, Dolby Pro Logic II.
• Video: HDMI 1.4, component video, composite video.
• Tuner: AM/FM with 40 presets.
• Inputs: 6 HDMI, 3 optical digital, 2 coaxial digital, 6 analog audio.
• Outputs: HDMI out, zone 2 audio, subwoofer, headphone.
• Multi-Zone: Independent audio in second zone.
• Power Source: 120V AC, 60Hz.
• Dimensions: Standard component width.

Controls and Settings

Access OSD via SETUP button. Front Panel: POWER, INPUT SELECT, VOLUME, MUTE, HEADPHONE.

Remote: POWER, Numeric buttons, INPUT SELECT, VOLUME, MUTE, SETUP, MENU navigation.

Audio: Speaker levels, crossover frequency, decoding mode, tone controls. Video: Resolution output, aspect ratio. Tuner: Preset memory, auto-scan. System: Firmware update, factory reset, network settings.

Connecting Devices

HDMI: For Blu-ray players, game consoles, streaming devices. Analog: For CD players, turntables (with phono preamp).

1. Turn off receiver and devices before connecting.
2. Use high-quality HDMI cables for best performance.
3. Assign inputs in setup menu for easy selection.
4. Select source via INPUT SELECT or remote.

Tip: Label cables for easy identification during setup.

Audio/Video Playback

Supports various audio formats and video resolutions.

1. Select source: Press INPUT SELECT for desired device.
2. Audio mode: Choose decoding mode (Auto, Direct, Stereo, etc.).
3. Volume control: Adjust with VOLUME or remote.
4. Radio: Tune AM/FM bands; save presets.
5. Multi-channel: Enjoy 5.1/7.1 surround sound with compatible content.
6. Night mode: Compresses dynamic range for late-night viewing.

WARNING! Avoid excessive volume to prevent hearing damage and speaker damage.

Multi-Zone Operation

Zone 2: Send different audio source to second room speakers.

1. Connect Zone 2 speakers to designated terminals.
2. In setup menu, enable Zone 2 and select source.
3. Control Zone 2 volume independently.
4. Use remote in Zone 2 if IR extender installed.

Care & Cleaning

Unplug before cleaning. Use 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. Copyright © Bose Corporation. For support, visit www.bose.com or contact 1-800-999-2673.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound	Input selection/volume	Check input source; increase volume; ensure mute is off.
No video	HDMI connection	Check HDMI cable; ensure TV input matches receiver output.
Remote not working	Batteries/obstructions	Replace batteries; ensure line of sight to sensor.
Overheating	Ventilation blocked	Ensure adequate space around receiver; clean vents.
Radio poor reception	Antenna placement	Reposition antennas; extend FM wire fully.

Reset: Hold POWER while unplugging, then plug back in for 10 seconds.

Service: 1-800-999-2673; www.bose.com/support