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  1. Home
  2. Passive In-wall Speakers
  3. Monitor Audio W150-LCR vs B&W CWM663

Monitor Audio W150-LCR vs B&W CWM663 Comparison

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Speaker to replace
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Monitor Audio W150-LCR

Passive In-wall | 60-30kHz

Monitor Audio W150-LCR
Check price atAmazon›
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B&W CWM663

Passive In-wall | 45-50kHz

Bowers & Wilkins Performance Series CWM663
Check price atAmazon›
Monitor Audio W150-LCR Monitor Audio W150-L...
Check price atAmazon›
B&W CWM663 B&W CWM663
Check price atAmazon›
Monitor Audio W150-L...
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B&W CWM663
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Monitor Audio W150-LCR vs B&W CWM663 Speaker Comparison

In this review, we will be comparing W150-LCR and CWM663, two Passive In-wall speakers from Monitor Audio and Bowers Wilkins.

Let's have a brief look at the main features of Monitor Audio W150-LCR and B&W CWM663 first before getting into our more detailed comparison.

Key SpecsMonitor Audio W150-LCRB&W CWM663
BrandMonitor Audio
United Kingdom · founded 1972
Bowers Wilkins
United Kingdom · founded 1966
Design2-way2-way
Tweeter1" Hard-Dome1" Soft-Dome
Woofer2 x 5" Metal Matrix Polymer6" Kevlar
Frequency response60-30kHz45-50kHz
Sensitivity88 dB88 dB
Impedance8 ohms8 ohms
Power range30-100 watts25-150 watts
Dimensions (H x W x D)13.8750" x 5.7500" x 4.0000"
353.0 x 147.0 x 102.0mm
11.0000" x 7.2500" x 3.7500"
280.0 x 185.0 x 96.0mm

What size room are the Monitor Audio W150-LCR and B&W CWM663 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* Monitor Audio W150-LCR B&W CWM663
Near-field Average Poor
Small Room Good Average
Mid-size Room Average Good
Large Room Poor Average
Very Large Room Bad 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.)

The sections below take each area in turn: drivers, frequency response, physical size and what you get in the box.


**This post contains affiliate links, and we will be compensated if you make a purchase after clicking through our links. As an Amazon Associate I earn from qualifying purchases.


Drivers

Both W150-LCR and CWM663 are 2-way speakers.

Tweeter - 1 inchWoofer - 5 inchWoofer - 5 inch
Monitor Audio W150-LCR
Tweeter - 1 inchWoofer - 6 inch
B&W CWM663

TweeterWoofer

Front view, drawn to scale - cabinets and drivers share one scale, so sizes are directly comparable. Hover a driver for its size.

Driver Monitor Audio W150-LCR B&W CWM663
Driver Setup 2-way 2-way
Tweeter 1-inch 1-inch
Midrange - -
Woofer 2 x 5-inch 1 x 6-inch

W150-LCR features a 1" Hard-Dome Tweeter and 2 x 5" Metal Matrix Polymer Woofer. On the other hand, the CWM663 features a 1" Soft-Dome Tweeter and 1 x 6" Kevlar Woofer.

Frequency Response

W150-LCR has a frequency range of 60-30kHz whereas CWM663 has a frequency range of 45-50kHz. With a minimum frequency of 45Hz, the CWM663 can go significantly deeper on the low side and provide stronger bass compared to the W150-LCR's min frequency of 60Hz.

The graph below depicts how these two speakers compare with the max, min and average Low Frequency values of other speakers in the In-wall class in our database.

Low Frequency

In-wall Speakers

W150-LCR
CWM663
Min
Average
Median

Neither pair reaches down to 20Hz, the usual definition of full-range, which is normal for speakers of this size. If you want the bottom octave for movies or bass-heavy music, add a subwoofer to whichever you choose. Visit our Powered Subwoofers section to find out more about the available options.

Impedance and Sensitivity

W150-LCR and CWM663 have the same Impedance of 8 ohms and their sensitivity is also same at 88 dB.

Sensitivity

In-wall Speakers

W150-LCR
CWM663
Min
Average
Median

Power Range

Power range is the range of input power in watts RMS that a loudspeaker is designed to handle. Staying within that range gives nominal performance; driving the speaker beyond its maximum wattage can damage it.

CWM663 can handle a max power of 150 watts RMS, whereas W150-LCR has a max power handling value of 100 watts RMS, 50 watts less than the CWM663.

Note that higher power handling does not make a speaker louder: that depends mainly on sensitivity and impedance. The calculator below shows how loud each of these actually plays on a real amplifier.

Which plays louder on your amplifier?

Starting with a popular amplifier - change it to the one you own, or any you are considering, and watch both numbers move.

Monitor Audio W150-LCR
 
B&W CWM663
 

Input Type and Bi-Amping / Bi-Wiring

W150-LCR features Spring post type posts and CWM663 has a Spring post type posts. None of these speakers feature bi-amping/bi-wiring.

Physical Specs

The size of a speaker can sometimes be an important decision factor due to space constraints or in some cases purely for esthetic reasons. In this section, we are going to compare Monitor Audio W150-LCR's and B&W CWM663's external dimensions. Monitor Audio W150-LCR has external dimensions of 353.0 x 147.0 x 102.0mm (13.8750-inch x 5.7500-inch x 4.0000-inch) whereas 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).

B&W CWM663 is 73mm shorter and 6mm less deeper than Monitor Audio W150-LCR but it is also 38mm wider.

Below you can see the front view size comparison of Monitor Audio W150-LCR and B&W CWM663 in scale.

Monitor Audio W150-LCR vs B&W CWM663 Size Comparison - Front View
Comparison image of Monitor Audio W150-LCR and B&W CWM663 Size and External Dimensions

What's in the Box of Monitor Audio W150-LCR?

Here are the items that are included inside the box of W150-LCR:
  • In-wall speaker
  • Grille
  • Paint skim
  • Installation Guide
  • Important Safety Instructions
  • Cutout Template

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

Here are the items that come with the CWM663:
  • 2 In-wall loudspeakers
  • 2 Mounting frames
  • 2 Grilles
  • 2 Paint mask
  • 2 Cut-out templates
  • Quick Start Guide
  • Template
  • Warranty Information


Reasons to choose Monitor Audio W150-LCR over Bowers & Wilkins Performance Series CWM663

Number of Woofers 2 vs 1 More woofers
Base Surface Area 149cm2 vs 177cm2 Takes less floor space
Price per pair* 870USD vs 900USD costs less (*prices may change depending on the seller, location and time)

Reasons to choose Bowers & Wilkins Performance Series CWM663 over Monitor Audio W150-LCR

Max Input Power 150 watts vs 100 watts Handle more power from your amplifier
Woofer Size 6 inches vs 5 inches Larger woofer
Low Frequency Response 45 Hz vs 60 Hz Generates deeper bass
High Frequency Response 50k Hz vs 30k Hz Generates higher frequency
Height 280mm vs 353mm Easier to fit in smaller spaces

Monitor Audio W150-LCR vs B&W CWM663 Specs Table

Detailed comparison of specifications
General Monitor Audio W150-LCR Bowers & Wilkins Performance Series CWM663
Brand Monitor Audio Bowers Wilkins
Speaker Type Passive In-wall Speaker Passive In-wall Speaker
Power Range 30-100 watts 25-150 watts
Sensitivity 88 dB 88 dB
Impedance 8 ohms 8 ohms
Frequency Response 60-30kHz 45-50kHz
Drivers
Woofer Quantity 2 1
Woofer Size 5" 6"
Woofer Composition Metal Matrix Polymer Kevlar
Woofer Surround Material Rubber Rubber
Tweeter Size 1" 1"
Tweeter Type Hard-Dome Soft-Dome
Aimable Tweeter No No
Midrange Driver No No
Physical Specs
Height 353.0mm (13.9") 280.0mm (11")
Width 147.0mm (5.8") 185.0mm (7.3")
Depth 102.0mm (4") 96.0mm (3.8")
Enclosure In-wall In-wall
Moisture Resistancy No No
Connections
Biamp Inputs No No
Other
Parts Warranty Lifetime 5 Years
Labor Warranty Lifetime 5 Years

Verdict

No single best speaker here - they are built to different priorities, and the right one depends on your room, your amplifier and what you listen to.

AreaBetterWhy
BassBB&W CWM663 digs deeper - 45Hz against 60Hz.
Amplifier needsevenly matchedSimilar sensitivity (88dB vs 88dB) - both want much the same power.
HeadroomBB&W CWM663 takes more power (150W vs 100W) - more in hand in a big room.
SizedependsSimilar cabinet size - neither is easier to fit.
Priceevenly matchedMuch the same money ($870 vs $900 a pair).

A Monitor Audio W150-LCR  B B&W CWM663
depends neither is better in the abstract - it turns on your room, your system or how you will use them. Only specs published for both speakers are judged; anything missing on either side is left out rather than guessed.

Which should you choose?

B&W CWM663 has the edge on paper, though the margin is not large. The rows marked "depends" may matter more to you than the score does. If a subwoofer is in your plans, the bass gap largely stops mattering - you would be crossing over above 60Hz anyway, so judge these on the other rows instead. Match it to your room: we rate Monitor Audio W150-LCR the better fit for near-field listening and a small room, and B&W CWM663 for a mid-size room and a large room.

And remember what a spec sheet cannot show: how each looks in your room and whether the finish suits it, what dealer support and warranty are like where you live, and how they actually sound to you. If you can hear them first - ideally with your own music - that will tell you more than any number above.


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