Bose Companion 5 Service Manual

Installation & Setup

Unpack all components and inspect for damage. Place on stable surfaces.

1. Connect satellites to module: Plug satellite cables into color-coded ports on rear of Acoustimass module.
2. Connect control pod: Plug the control pod cable into its dedicated port on the module.
3. Connect USB: Run USB cable from module to an available USB port on your computer.
4. Connect power: Plug the AC power cord into the module and then into a wall outlet.
5. Power on: The system powers on automatically when connected to USB and AC power. Status LED should illuminate.

WARNING! Ensure all connections are secure before applying power. Do not place module in enclosed spaces.

Control Pod Operation

The control pod provides all user controls for daily operation.

Volume Knob: Rotate clockwise to increase volume, counter-clockwise to decrease. No power switch; system is always on when connected.

Mute Button: Press to mute/unmute speaker audio. Status LED turns amber when muted.

Headphone Jack: Inserting a 3.5mm plug automatically mutes the speakers and routes audio to headphones. Removing the plug restores speaker audio.

LED Indicators: Green = System on, audio active. Amber = System on, audio muted.

Connection Diagrams

System interconnection and signal flow.

1. Primary Signal Path: Computer (USB Audio) -> Acoustimass Module (DAC & Amplification) -> Control Pod & Satellites.
2. Headphone Bypass: Signal routes to control pod headphone jack when plugged in.
3. Power Distribution: AC Mains -> Module Internal PSU -> Amplifier Circuits & USB Bus Power.

Note: Refer to page 7 of the physical manual for detailed block diagram.

Internal Components

Key internal parts of the Acoustimass module (for service reference).

Disassembly Procedure

For authorized service personnel only. Disconnect all power before proceeding.

1. Remove rubber feet: Peel off four rubber feet to reveal screws.
2. Remove bottom panel screws: Use Torx T10 screwdriver.
3. Separate base: Carefully lift the base plate away from the main enclosure.
4. Disconnect internal wiring: Note locations of speaker, control pod, and power supply connectors.
5. Extract main assembly: The amplifier board and woofer assembly can now be accessed.

CAUTION! High-voltage capacitors may retain charge. Allow sufficient discharge time. Avoid damaging internal wiring or speaker cones.

Circuit Diagrams

Schematic overview of major circuits (summary).

• Power Supply: Switching PSU with +5V, +12V, and -12V rails.
• Digital Audio Section: USB receiver IC, DSP, and stereo DAC.
• Amplifier Section: Proprietary Class-D amplifier modules for satellites and woofer.
• Control Pod Circuit: Analog potentiometer, mute switch logic, headphone detection switch.

Refer to full schematics in Appendix A for component-level details.

Troubleshooting Flowcharts

Parts List & Ordering

Genuine Bose replacement parts must be ordered through authorized service channels.

Contact: Bose Professional Support or authorized distributor for ordering.

Safety & Compliance

This product complies with relevant safety and EMC standards.

• Safety Standards: UL, CSA, IEC 60065.
• EMC: FCC Part 15 Class B, CE, ICES-003.
• Waste Electrical (WEEE): Do not dispose with household waste. Recycle according to local regulations.
• Service Safety: Only qualified personnel should perform service involving the removal of covers, due to risk of electric shock.

© Bose Corporation. Bose, Companion, Acoustimass are trademarks of Bose Corporation. This document is for authorized service use only.