Introduction
This manual provides essential information for the setup, operation, and maintenance of your Bose Companion 2 Series II Multimedia Speaker System. Designed to enhance your computer audio experience, these speakers deliver clear, full-range sound for various media. Please read these instructions carefully before using your speaker system.
Package Contents
Verify that all items are present in your package:
- Powered speaker (right speaker with controls)
- Accessory speaker (left speaker)
- Audio input cable with mini-plug (3.5mm auxiliary cable)
- Speaker cable (to connect the two speakers)
- AC power pack
Setup Instructions
Follow these steps to set up your Bose Companion 2 Series II speaker system:
- Position the Speakers: Place the right (powered) speaker and the left (accessory) speaker on either side of your computer monitor or desired listening area. Ensure they are positioned to create a spacious soundstage.

Image: Bose Companion 2 Series II speakers set up on a desk with a computer.
- Connect the Speakers: Use the provided speaker cable to connect the left accessory speaker to the right powered speaker. The connections are typically color-coded or clearly labeled on the back of each speaker.

Image: Rear view of the Bose Companion 2 Series II speakers, highlighting the connection ports.
- Connect to Audio Source: Connect the audio input cable (3.5mm mini-plug) from the right powered speaker to the headphone jack or audio output port on your computer, MP3 player, or other audio source. The system features dual inputs, allowing connection to a second audio source simultaneously.
- Connect Power: Plug the AC power pack into the power input on the right powered speaker, then plug the power pack into a wall outlet.
- Power On: Turn the volume knob on the front of the right speaker clockwise to power on the system and adjust the volume.

Image: Front view of the right Bose Companion 2 Series II speaker, featuring the volume control and headphone jack.
Magnetic Shielding: The speakers are magnetically shielded to prevent interference with your monitor, ensuring clear visuals.
Operating Your Speaker System
- Volume Control: The large knob on the front of the right speaker controls the system's volume. Turn clockwise to increase volume, counter-clockwise to decrease.
- Headphone Jack: A headphone jack is conveniently located on the front of the right speaker. Plugging in headphones will mute the speakers, allowing for private listening.
- Dual Inputs: The system supports two audio sources simultaneously. You can connect your computer to one input and a portable MP3 or CD player to the other. The system will automatically play audio from the active source.
Product Overview Video
Video: A brief overview of the Bose Companion 2 Series II Multimedia Speaker System, showcasing its design and features.
Maintenance and Care
- Cleaning: Use a soft, dry cloth to clean the speaker surfaces. Do not use liquid cleaners or sprays directly on the speakers.
- Placement: Avoid placing speakers in direct sunlight, near heat sources, or in areas with high humidity. Ensure adequate ventilation around the speakers.
- Cable Management: Keep cables tidy and untangled to prevent damage and ensure optimal performance.
- Storage: If storing the speakers for an extended period, disconnect them from power and audio sources, and store them in a cool, dry place.
Troubleshooting
If you encounter issues with your speaker system, refer to the following common solutions:
- No Sound:
- Ensure the power pack is securely plugged into both the speaker and a working wall outlet.
- Check that the volume knob on the right speaker is turned up.
- Verify that the audio input cable is firmly connected to both the speaker and your audio source.
- Confirm that your audio source (computer, MP3 player) is playing audio and its volume is not muted or too low.
- If headphones are plugged into the speaker's front jack, remove them.
- Distorted Sound:
- Reduce the volume on both the speakers and your audio source.
- Check for loose cable connections.
- Test with a different audio source or cable to rule out external issues.
- One Speaker Not Working:
- Ensure the speaker cable connecting the left and right speakers is securely attached at both ends.
- Verify that the audio source is providing a stereo signal.
- Interference/Humming:
- Move the speakers away from other electronic devices that might cause interference.
- Ensure all cables are properly shielded and connected.
Specifications
| Feature | Detail |
|---|---|
| Brand | Bose |
| Model Name | Companion 2 |
| Model Number | 40274 |
| Series Number | 2 |
| Speaker Type | Computer |
| Audio Output Mode | Stereo |
| Number of Audio Channels | 2.1 |
| Connectivity Technology | Wired |
| Connectivity Protocol | 3.5mm auxiliary |
| Power Source | Corded Electric |
| Color | Grey |
| Enclosure Material | Metal, Plastic |
| Item Dimensions (D x W x H) | 3.4"D x 6"W x 7.5"H |
| Item Weight | 2 Pounds |
| Compatible Devices | Laptop, Desktop, MP3 Player |
| Additional Features | Portable, Magnetically Shielded |
Warranty and Support
Your Bose Companion 2 Series II Multimedia Speaker System comes with a 1-year limited warranty. For warranty claims or technical support, please contact Bose customer service.
Manufacturer: Bose





