Bose Companion 2 Series II (Model 40274)

Bose Companion 2 Series II Multimedia Speaker System User Manual

Model: 40274

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:

  1. 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.

    Bose Companion 2 Series II speakers positioned on a desk next to a computer monitor, keyboard, and mouse.

    Image: Bose Companion 2 Series II speakers set up on a desk with a computer.

  2. 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.

    Rear view of the Bose Companion 2 Series II speakers showing the audio input and speaker cable connections.

    Image: Rear view of the Bose Companion 2 Series II speakers, highlighting the connection ports.

  3. 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.
  4. 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.
  5. Power On: Turn the volume knob on the front of the right speaker clockwise to power on the system and adjust the volume.

    Front view of the right Bose Companion 2 Series II speaker showing the volume knob and headphone jack.

    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

FeatureDetail
BrandBose
Model NameCompanion 2
Model Number40274
Series Number2
Speaker TypeComputer
Audio Output ModeStereo
Number of Audio Channels2.1
Connectivity TechnologyWired
Connectivity Protocol3.5mm auxiliary
Power SourceCorded Electric
ColorGrey
Enclosure MaterialMetal, Plastic
Item Dimensions (D x W x H)3.4"D x 6"W x 7.5"H
Item Weight2 Pounds
Compatible DevicesLaptop, Desktop, MP3 Player
Additional FeaturesPortable, 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

© 2026 Bose Corporation. All rights reserved.

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