Bose Acoustimass 3 User Manual

The Bose Acoustimass 3 is a compact, high-performance speaker system designed to deliver rich, full-range sound. It features a unique Acoustimass module for deep bass, two Direct/Reflecting cube speakers for spacious stereo imaging, and simple setup for use with various audio sources. 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 Connections 6. Connecting to Audio Sources 7. Operation and Sound Adjustment 8. Care & Maintenance 9. Regulatory Information 10. Troubleshooting

Features at a Glance

Key components: Acoustimass bass module, two Direct/Reflecting cube speakers, speaker cables, power cord, and user manual.

Feature	Description
Acoustimass Module	Compact bass unit for deep, distortion-free low frequencies
Direct/Reflecting Cube Speakers	Two small speakers for wide, spacious stereo sound
Speaker Connections	Color-coded push-button terminals for easy setup
Power Input	For AC power connection to the bass module
Input Jacks	For connecting to receiver, amplifier, or other audio source
Bass Level Control	Adjustable knob on the bass module

Installation

Unpack and inspect all components. Choose a stable location for the bass module and speakers.

Place the Acoustimass module: Position on floor near wall or in corner for enhanced bass.
Position cube speakers: Place on shelves, stands, or mount on walls at ear level when seated.
Connect speakers to module: Use provided cables; match colors (red to red, black to black).
Connect audio source: Run cable from module input to your receiver/amplifier speaker outputs.
Plug power cord into outlet and module.

WARNING! Ensure all connections are secure and cables are not pinched. Do not place heavy objects on speakers.

First-Time Setup

After installation, power on your audio source and adjust settings.

Power on: Ensure bass module is plugged in and audio source is on.
Set bass level: Adjust knob on module to preference (start at midpoint).
Test sound: Play audio and verify both cube speakers are working.
Fine-tune placement: Adjust speaker positions for optimal stereo imaging.

CAUTION! Keep bass module away from heat sources and ensure proper ventilation.

Specifications

System Type: 2.1 channel speaker system.
Bass Module: Acoustimass technology, powered.
Cube Speakers: Direct/Reflecting design, 2.25" drivers.
Frequency Response: 45 Hz – 20 kHz.
Impedance: 4–8 ohms compatible.
Power Handling: Up to 100 watts per channel recommended.
Inputs: Speaker-level inputs (from amplifier).
Power Source: 120V AC, 60Hz (or regional equivalent).
Dimensions (each cube): Approx. 4.5" H x 3.5" W x 3.5" D.

Controls and Connections

Primary controls are on the Acoustimass module and your audio source.

Acoustimass Module: Power indicator, Bass Level control knob, Input terminals, Power socket.

Audio Source (Receiver/Amplifier): Volume, Balance, Tone controls.

Connections: Speaker wires from amplifier connect to module INPUT terminals. Cube speakers connect to module OUTPUT terminals. Ensure polarity is correct (red to red, black to black).

Connecting to Audio Sources

Compatible with most stereo receivers, amplifiers, and compatible audio outputs.

Turn off and unplug all equipment before connecting.
Connect amplifier speaker outputs to module INPUT terminals.
Connect cube speakers to module OUTPUT terminals.
Plug module into AC outlet.
Turn on amplifier and play audio to test.

Tip: Use high-quality speaker wire for best performance. Keep cables away from power cords to avoid interference.

Operation and Sound Adjustment

For daily use and optimizing sound quality.

Power: Ensure module is powered (LED indicator on).
Volume: Control volume from your audio source.
Bass adjustment: Use knob on module to increase/decrease bass level.
Speaker placement: Adjust cube speaker position and angle for best stereo effect.
Listening modes: Use source equipment for stereo, mono, or other sound modes.

WARNING! Do not exceed recommended power input to avoid damage. Avoid placing objects directly against speaker grilles.

Care & Maintenance

Unplug system before cleaning. Use soft, dry cloth for exterior surfaces.

CAUTION! Do not use liquids, solvents, or abrasive cleaners. Do not open any part of the system; no user-serviceable parts inside.

Regulatory Information

FCC Compliance: This device complies with Part 15 of the FCC Rules. Operation is subject to interference that may cause undesired operation. Copyright © Bose Corporation. All rights reserved. Bose and Acoustimass are registered trademarks of Bose Corporation. For support, visit www.bose.com or contact Bose Customer Service.

Troubleshooting

Symptom	Possible Cause	Corrective Action
No sound from speakers	Power/connections	Check power to module; verify all cable connections are secure and correct.
Weak or no bass	Bass level setting	Adjust bass knob on module; check source audio settings.
Distorted sound	Overdriven input	Reduce volume on audio source; ensure amplifier power is within recommended range.
One speaker not working	Loose wire	Check connections at both module and speaker; swap cables to isolate issue.
Hum or buzz	Ground loop/interference	Ensure all components are plugged into same grounded outlet; separate audio and power cables.

Reset: Power cycle system by unplugging module for 30 seconds, then reconnect.

Service: Contact Bose Customer Support or authorized service center.