Bowers & Wilkins Performance Series CWM663 is a 2-way Passive In-wall In-wall speaker by Bowers Wilkins. It features a 1" Soft-Dome Tweeter and 1 x 6" Kevlar Woofer. The speaker has a frequency range of 45-50kHz and a sensitivity of 88 dB. B&W CWM663 has an MSRP of 900$ per pair.
Room Size Suitability
The size of the room where you plan to use the B&W CWM663 is a crucial factor in your decision. We have assessed its suitability for various room sizes based on its dimensions and maximum power output:
| Listening Environment* |
Suitability |
| Near-field | Poor |
| Small Room | Average |
| Mid-size Room | Good |
| Large Room | Average |
| Very Large Room | Poor |
(* Approximate Room sizes: Small < 100sq. ft / 9 m2, Mid-size: 100-220 sq. ft / 9-20 m2, Large 220-400 sq. ft / 20-36 m2, Very Large: > 400 sq. ft / 36 m2.
Average Floor Height: 9" / 2.7m. Typical room sizes differ from country to country, and the actual listening experience changes depending on floor height, room shape, surface materials, listening position, speaker locations, etc.)
**This post contains affiliate links, and I will be compensated if you make a purchase after clicking through my links. As an Amazon Associate I earn from qualifying purchases.
Frequency Response of the B&W CWM663 Speaker
B&W CWM663 has a Frequency response range of 45-50kHz at ±3dB and Power Range of 25-150 watts. With a minimum frequency of 45 Hz, CWM663 delivers moderate bass depth so depending on your use case, you might want to consider adding a subwoofer to your system.
To focus on the subwoofers that are in a similar price range with B&W CWM663, check out the Powered Subwoofers under $1000. Alternatively, find the Full list of Powered Subwoofers regardless of the price.
Here we have a comparison of how CWM663's Low and High frequency values compare with the average, max and min Low and High frequency values in its class.
Low Frequency
In-wall Speakers
High Frequency
In-wall Speakers
Impedance and Sensitivity
B&W CWM663's nominal impedance level is
8 ohms and has a sensitivity of
88 dB.
Sensitivity
In-wall Speakers
8 Ohms is pretty much the standard nominal impedance amongst stereo speakers and amplifiers so Bowers & Wilkins Performance Series CWM663 is not considered a difficult to drive speaker from nominal Impedance perspective.
Sensitivity
88dB of the Bowers & Wilkins Performance Series CWM663 is an average sensitivity for stereo speaker so it is neither easy nor difficult to drive Sensitivity wise.
Check the amplifiers that are in a similar price range to the B&W CWM663:
Input Type
CWM663 features Spring post type connectors. Bi-amping and Bi-wiring are not possible.
B&W CWM663 External Dimensions and Weight
B&W CWM663 has external dimensions of (Height x Width x Depth) 11.0000-inch x 7.2500-inch x 3.7500-inch (280.0 x 185.0 x 96.0mm ).
Base Surface Area
Base surface area of a loudspeaker may become a determining factor when the space in your room or desk is limited.
The base area of B&W CWM663 is approximately 177.6cm2 / 27.5inch2.
Cabinet type and Materials
B&W CWM663 has a
In-wall type cabinet.
What's in the Box of B&W CWM663?
Here are the items that are included inside the box of CWM663:
2 In-wall loudspeakers2 Mounting frames2 Grilles2 Paint mask2 Cut-out templatesQuick Start GuideTemplateWarranty Information
Recommended Accessories
Here is a list of accessories that we think you may need for the Bowers & Wilkins Performance Series CWM663.
Warranty
5 Years of parts warranty and 5 Years of labor warranty is generally provided by the manufacturer.