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B&W CWM663 vs Monitor Audio W280-IDC Comparison

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B&W CWM663

Passive In-wall | 45-50kHz

Bowers & Wilkins Performance Series CWM663
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Monitor Audio W280-IDC

Passive In-wall | 45-30kHz

Monitor Audio W280-IDC
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B&W CWM663 B&W CWM663
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Monitor Audio W280-IDC Monitor Audio W280-I...
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B&W CWM663
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Monitor Audio W280-I...
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B&W CWM663 vs Monitor Audio W280-IDC Speaker Comparison

In this review, we will be comparing CWM663 and W280-IDC, two Passive In-wall speakers from Bowers Wilkins and Monitor Audio.

Let's have a brief look at the main features of B&W CWM663 and Monitor Audio W280-IDC first before getting into our more detailed comparison.

B&W CWM663 Key Specs

  • 2-way Design
  • 1" Soft-Dome Tweeter
  • 6" Kevlar Woofer
  • 45-50kHz Frequency Response
  • 88 dB Sensitivity
  • Impedance: 8ohms
  • Power Range:25-150watts
  • Dimensions (H x W x D): 280.0" x 7.2500" x 3.7500"( 280.0 x 185.0 x 96.0mm )

Monitor Audio W280-IDC Key Specs

  • 3-way Design
  • 1" Hard-Dome Tweeter
  • 4" Midrange
  • 8" C-CAM Woofer
  • 4" Midrange
  • 45-30kHz Frequency Response
  • 90 dB Sensitivity
  • Impedance: 6ohms
  • Power Range:30-120watts
  • Dimensions (H x W x D): 388.0" x 9.1875" x 3.6875"( 388.0 x 234.0 x 94.0mm )

What size room are the B&W CWM663 and Monitor Audio W280-IDC speakers good for?

The size of the room in which you are planning to use these loudspeakers is an important decision factor. Here we have compared their suitability to various sizes of environments considering their size and max power parameters:

Listening Environment* B&W CWM663 Monitor Audio W280-IDC
Near-field Poor Poor
Small Room Average Average
Mid-size Room Good Good
Large Room Average Average
Very Large Room Poor 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.)

In the following sections, we will get into more detail in order to better understand how the B&W CWM663 and Monitor Audio W280-IDC compare and hopefully end up with enough arguments to decide which one of these loudspeakers is the better choice for you.


**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.


Drivers

One of the fundamental differences between these two speakers is that CWM663 is a 2-way design whereas the W280-IDC is a 3-way speaker. 3-way designs utilize a midrange driver in addition to the tweeter and woofer on 2-way designs. Designing a crossover for a 3-way speaker is a complicated process and generally increases the overall cost of the speaker.

Driver B&W CWM663 Monitor Audio W280-IDC
Driver Setup 2-way 3-way
Tweeter 1-inch 1-inch
Midrange - 1 x 4-inch
Woofer 1 x 6-inch 1 x 8-inch

CWM663 features a 1" Soft-Dome Tweeter and 1 x 6" Kevlar Woofer . On the other hand, the W280-IDC features a 1" Hard-Dome Tweeter , a 4" Midrange and 1 x 8" C-CAM Woofer .

Frequency Response

CWM663 has a frequency range of 45-50kHz whereas W280-IDC has a frequency range of 45-30kHz.

Below graphs depict how these two speakers compare with the max, min and average values of the Min and Max Frequencies of other speakers in the In-wall class in our database.

Low Frequency

In-wall Speakers

CWM663
W280-IDC
Min
Average
Max
High Frequency

In-wall Speakers

B&W CWM663
Monitor Audio W280-IDC
Min
Average
Max

None of these speakers achieves full range experience which is commonly agreed as 20Hz-20kHz. In order to achieve lower lows / deeper bass, we recommend you pair these with a subwoofer. Visit our Powered Subwoofers section to find out more about the available options.

Impedance and Sensitivity

CWM663 is a 8 ohms speaker compared to the W280-IDC which has a nominal impedance of 6 ohms.

These two speakers also have different sensitivity levels. CWM663 sensitivity is rated at 88 dB and the W280-IDC's is rated at 90 dB. This 2 dB difference makes the Monitor Audio W280-IDC a more sensitive speaker compared to B&W CWM663, hence will play louder with the same amount of watts.

Sensitivity

In-wall Speakers

CWM663
W280-IDC
Min
Average
Max

Power Range

Power range is the range of input power in watts RMS that a loudspeaker is designed to handle. While using an amplifier within this range ensures the nominal performance , inputting a power that is higher than the max wattage can result in a damaged speaker.

CWM663 can handle a max power of 150 watts RMS from the amp the whereas W280-IDC has a max power handling value of 120 watts RMS, 30 watts less than the CWM663.

Keep in mind that a higher max power handling value doesn't necessarily make that a louder speaker compared to a lower max handling speaker. Loudness or the sound level is also impacted by parameters such as Impedance, sensitivity and system efficiencies.

Input Type and Bi-Amping / Bi-Wiring

CWM663 features Spring post type posts and W280-IDC has a Spring post type posts. None of these speakers feature bi-amping/bi-wiring.

Physical Specs

Size of a speaker can sometimes become an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare B&W CWM663's and Monitor Audio W280-IDC's external dimensions. B&W CWM663 has external dimensions of 280.0 x 185.0 x 96.0mm ( 11.0000-inch x 7.2500-inch x 3.7500-inch) whereas Monitor Audio W280-IDC has external dimensions of 388.0 x 234.0 x 94.0mm ( 15.2500-inch x 9.1875-inch x 3.6875-inch) .

B&W CWM663 is 49mm narrower and 108mm shorter than Monitor Audio W280-IDC but it is also 2mm deeper.

What's in the Box of B&W CWM663?

Here are the items that are included inside the box of CWM663:
  • 2 In-wall loudspeakers
  • 2 Mounting frames
  • 2 Grilles
  • 2 Paint mask
  • 2 Cut-out templates
  • Quick Start Guide
  • Template
  • Warranty Information
  • What's in the Box of Monitor Audio W280-IDC?

    Here are the items that come with the W280-IDC:
  • In-Wall speaker
  • Grille
  • Paint skim
  • Installation Guide
  • Important Safety Instructions
  • Cutout Template

  • Reasons to choose Bowers & Wilkins Performance Series CWM663 over Monitor Audio W280-IDC
    Max Input Power 150 watts vs 120 watts Handle more power from your amplifier
    Nominal Impedance 8 ohms vs 6 ohms Less selective with amplifiers
    High Frequency Response 50k Hz vs 30k Hz Generates higher frequency
    Height 280mm vs 388mm Easier to fit in smaller spaces
    Base Surface Area 177cm2 vs 220cm2 Takes less floor space
    Price per pair* 900USD vs 1300USD costs less (*prices may change depending on the seller, location and time)

    Reasons to choose Monitor Audio W280-IDC over Bowers & Wilkins Performance Series CWM663

    Driver Setup 3-way vs 2-way Have a dedicated mid-range driver
    Sensitivity 90 dB vs 88 dB Play louder with same amount of amplification power
    Woofer Size 8 inches vs 6 inches Larger woofer
    B&W CWM663 vs Monitor Audio W280-IDC Specs Table
    Detailed comparison of specifications
    General Bowers & Wilkins Performance Series CWM663 Monitor Audio W280-IDC
    Brand Bowers Wilkins Monitor Audio
    Speaker Type Passive In-wall Speaker Passive In-wall Speaker
    Power Range 25-150 watts 30-120 watts
    Sensitivity 88 dB 90 dB
    Impedance 8 ohms 6 ohms
    Frequency Response 45-50kHz 45-30kHz
    Drivers
    Woofer Quantity 1 1
    Woofer Size 6" 8"
    Woofer Composition Kevlar C-CAM
    Woofer Surround Material Rubber Rubber
    Tweeter Size 1" 1"
    Tweeter Type Soft-Dome Hard-Dome
    Aimable Tweeter No Yes
    Midrange Driver N/A" 4"
    Physical Specs
    Height 280.0mm (11") 388.0mm (15.3")
    Width 185.0mm (7.3") 234.0mm (9.2")
    Depth 96.0mm (3.8") 94.0mm (3.7")
    Enclosure In-wall In-wall
    Moisture Resistancy No Yes
    Connections
    Biamp Inputs No No
    Other
    Parts Warranty 5 Years Lifetime
    Labor Warranty 5 Years Lifetime

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