Bose C2III
Bose Companion 2 Series III Multimedia Speaker System User Manual
Model: C2III
Product Overview
The Bose Companion 2 Series III powered speaker system delivers high-quality stereo sound in a sleek and compact design. These multimedia speakers are designed for easy connection to various audio sources, including laptops, tablets, and smartphones, via 3.5mm or USB inputs.

Figure 1: Bose Companion 2 Series III Speaker System (Black)
Key Features:
- High quality audio performance, with clear sound at any volume.
- Auxiliary input for connecting another audio source such as your iPhone or iPad.
- Convenient volume control and headphone jack located on the front of the right speaker.
- Operating compatibility with Mac and Windows XP.
Setup Instructions
Follow these steps to set up your Bose Companion 2 Series III speaker system:
- Positioning the Speakers: Place the right speaker (with the volume control) on the right side of your computer or audio source, and the left speaker on the left side. Ensure they are on a stable, flat surface.
- Connecting the Speakers: Locate the cable extending from the left speaker. Plug the connector of this cable into the "TO LEFT SPEAKER" port on the back of the right speaker.
- Connecting to Audio Source: Use the provided audio cable to connect the "FROM COMPUTER" input on the back of the right speaker to the audio output (headphone jack) of your computer, laptop, tablet, or smartphone.
- Power Connection: Plug the power adapter into the "DC POWER" input on the back of the right speaker. Then, plug the power adapter into a wall outlet.

Figure 2: Rear connections of the Bose Companion 2 Series III Speaker System
Once all connections are secure, the system is ready for operation.
Operating Instructions
Operating your Bose Companion 2 Series III speakers is straightforward:
- Power On/Off: The speakers power on automatically when connected to a power source and an active audio input. There is no dedicated power button on the front.
- Volume Control: Adjust the volume using the large rotary knob located on the front of the right speaker. Turn clockwise to increase volume and counter-clockwise to decrease it.
- Headphone Use: For private listening, plug your headphones into the headphone jack located directly below the volume knob on the front of the right speaker. Plugging in headphones will automatically mute the speakers.
- Auxiliary Input: To connect an additional audio device (e.g., an MP3 player or another smartphone), use a 3.5mm audio cable to plug it into the "AUX IN" port on the back of the right speaker. The speakers will automatically switch to the auxiliary input when a signal is detected.

Figure 3: Front controls of the right speaker
Maintenance
To ensure the longevity and optimal performance of your Bose Companion 2 Series III speakers, follow these simple maintenance guidelines:
- Cleaning: Use a soft, dry cloth to gently wipe the exterior surfaces of the speakers. Avoid using liquid cleaners, aerosols, or abrasive solvents, as these can damage the finish or internal components.
- Placement: Place the speakers on a stable surface to prevent accidental falls. Avoid placing them in direct sunlight, near heat sources, or in areas with high humidity, as extreme conditions can affect performance and lifespan.
- Ventilation: Ensure that the rear ports and vents on the speakers are not obstructed to allow for proper airflow and prevent overheating.
- Cable Management: Keep cables neatly organized and avoid sharp bends or kinks, which can lead to damage over time.
Troubleshooting
If you encounter issues with your Bose Companion 2 Series III speakers, try the following troubleshooting steps:
| Problem | Possible Cause | Solution |
|---|---|---|
| No sound |
|
|
| Distorted sound |
|
|
| Only one speaker working |
|
|
If the issue persists after trying these steps, please refer to the Warranty and Support section.
Specifications
| Feature | Detail |
|---|---|
| Brand | Bose |
| Model Name | Companion 2 |
| Item Model Number | C2III |
| Speaker Type | Multimedia |
| Connectivity Technology | Wired (Auxiliary) |
| Audio Output Mode | Stereo |
| Surround Sound Channel Configuration | 2.0 |
| Compatible Devices | Laptop, Smartphone, Tablet |
| Color | Black |
| Product Dimensions | 8.46"D x 8.46"W x 11.14"H |
| Item Weight | 3.96 pounds (1.8 Kilograms) |
| Included Components | Speaker(s), Cable(s) |
| Control Method | Touch (Volume Knob) |
| Power Source | Corded Electric |
Warranty and Support
The Bose Companion 2 Series III Multimedia Speaker System comes with a Limited Warranty. For detailed information regarding warranty coverage, terms, and conditions, please refer to the documentation included with your product or visit the official Bose website.
Important Note: As per the legal disclaimer, this product is sold "as is" and the seller is not responsible for any unintended use. This may affect specific warranty claims depending on the purchase source.
For technical support, product registration, or service inquiries, please contact Bose customer support directly through their official channels. Contact information can typically be found on the product packaging or their corporate website.
Ask a question about this manual
Ask about setup, troubleshooting, compatibility, parts, safety, or missing instructions. Manuals+ will review the question and use this page’s manual context to help answer it.







