The CCM628 is a custom inwall speaker featuring a 40º-60º coverage angle and 100 mm depth.
This manual covers everything needed to install and optimise the Bowers & Wilkins CCM628 inwall speaker. It explains how to choose a suitable location, prepare the ceiling cavity, run the speaker cable, and mount the speaker securely. Detailed guidance is given for adjusting the tweeter angle (40°‑60°) and using the front‑panel switch to boost or cut high‑frequency output.
The document also includes the limited warranty terms, which are valid for five years on the speaker and two years on electronic components. Instructions for claiming warranty service, required documentation, and contact details for authorized B&W dealers are provided.
| Recommended cable loop resistance (non‑critical) | below 0.5 Ω |
|---|---|
| Recommended cable loop resistance (best results) | below 0.2 Ω |
| Minimum cavity volume | above 10 litres (0.4 cu ft) |
| Minimum distance from walls/ceilings | at least 0.5 m (20 in) |
| Recommended tweeter angle range | 40°‑60° |
The warranty is valid for five years from the date of purchase for the speaker, and two years for electronic components such as amplified loudspeakers.
Keep the loop resistance below 0.5 Ω for non‑critical installations and below 0.2 Ω for the best results.