Short answer: the KEF CI200RR-THX. It ranks #12 of 28 in-wall speakers by sound quality, rated 3.7/5, at $2,399.98; the Bowers & Wilkins CWM 7.5 S2 ranks #24, rated 3.0/5, and costs $2,700, which makes this an easy call rather than a real tradeoff.
The KEF CI200RR-THX is the better-sounding pick. An 8” woofer paired with a 1.5” Uni-Q tweeter (crossing over at 2.2kHz) measures a genuine 82.5Hz at -3dB and roughly 30.5Hz at -10dB, respectable low-end reach for a mid-priced in-ceiling speaker. Watch for: Spinorama’s measurement of this model is a lower-confidence manufacturer curve rather than an independently verified Klippel scan, so treat the extension figures as directionally useful rather than as precise as the ASR-measured entries in this category.
What the Bowers & Wilkins CWM 7.5 S2 does well: A Reference Series in-wall with a 1” Carbon Dome tweeter and a 5” Continuum cone, a forward-firing Flowport and a retrofittable integrated back box, rated 45Hz to 28kHz. The catch: No independent measurements yet, so its tonal balance and directivity can’t be compared directly with measured speakers; the rating is estimated from its measured predecessor.
Buy the KEF CI200RR-THX. It is rated higher for sound quality than the Bowers & Wilkins CWM 7.5 S2 and costs less, which makes it the one to get unless you need something the other one does better.
Worth knowing: the Bowers & Wilkins CWM 7.5 S2 has not been measured yet. Its rating is estimated from related models, with a likely range of 2.5 to 3.5, so treat this verdict as provisional.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| KEF CI200RR-THX | Bowers & Wilkins CWM 7.5 S2 | |
|---|---|---|
| Price | $2,399.98 per pair | $2,700 per pair |
| Ranked | #12 of 28 in In-Wall & In-Ceiling Speakers | #24 of 28 in In-Wall & In-Ceiling Speakers Estimated |
| Drivers | 8” woofer, 1.5” Uni-Q tweeter (2.2kHz crossover) | 1” Carbon Dome tweeter, 5” Continuum cone mid/bass |
| Enclosure | Open-backed, in-ceiling | - |
| Mounting Cutout | 238mm (9.37 in) | - |
| Dimensions | 11.4” x 11.4” x 5.2” (290 x 290 x 132.6 mm) (126.5mm mounting depth) | 14”H x 8.3”W x 4”D (356 x 212 x 102 mm) |
| Weight | 7.9 lbs (3.6kg) | 8.4 lbs (3.8 kg) each |
| Sensitivity | 90dB | 86dB (2.83V/1m, manufacturer specified) |
| Impedance | 4 ohms | 8 ohms nominal, 3.8 ohms minimum (manufacturer specified) |
| Power Handling | 10-190W recommended amplifier power | - |
| Frequency Response | 33Hz-28kHz +/-6dB (manufacturer, open-backed) | 45Hz-28kHz (manufacturer specified) |
| Bass Extension (-3dB) | 82.5Hz (measured, spinorama.org vendor data) | 45Hz (manufacturer specified) |
| Bass Extension (-10dB) | 30.5Hz (measured, spinorama.org vendor data) | - |
| Certification | THX | - |
| DIY Kit | No | No |
| Woofer Cabinet | - | ported (front Flowport), integrated back box |
Related Speaker Comparisons
More worthwhile head-to-heads for KEF CI200RR-THX:
- KEF Ci3160RLM-THX vs KEF CI200RR-THX
- KEF CI250RRM-THX vs KEF CI200RR-THX
- Monolith THX-365IW vs KEF CI200RR-THX
- JBL Synthesis SCL-6 vs KEF CI200RR-THX
- JBL Synthesis SCL-7 vs KEF CI200RR-THX
Prices on this page were last checked October 11, 2026 at 4:59 PM UTC. Product prices and availability are accurate as of that date/time and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.
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The Two Speakers In Full
KEF CI200RR-THX: $2,399.98 per pair Amazon eBay
Pros: An 8” woofer paired with a 1.5” Uni-Q tweeter (crossing over at 2.2kHz) measures a genuine 82.5Hz at -3dB and roughly 30.5Hz at -10dB, respectable low-end reach for a mid-priced in-ceiling speaker. The 238mm cutout accepts a large enough driver to move real air in a family room or media room. At $1200 each, it costs about half of the flagship KEF Ci3160RLM-THX while carrying the same THX certification. Measured bass extension of 82.5Hz (-3dB).
Cons: Spinorama’s measurement of this model is a lower-confidence manufacturer curve rather than an independently verified Klippel scan, so treat the extension figures as directionally useful rather than as precise as the ASR-measured entries in this category. No Harman-style preference score has been published for it.
Full KEF CI200RR-THX review and specifications →
| Bass Extension (-10dB) | 30.5Hz (measured, spinorama.org vendor data) |
|---|---|
| Bass Extension (-3dB) | 82.5Hz (measured, spinorama.org vendor data) |
| Certification | THX |
| DIY Kit | No |
| Dimensions | 11.4” x 11.4” x 5.2” (290 x 290 x 132.6 mm) (126.5mm mounting depth) |
| Drivers | 8” woofer, 1.5” Uni-Q tweeter (2.2kHz crossover) |
| Enclosure | Open-backed, in-ceiling |
| Frequency Response | 33Hz-28kHz +/-6dB (manufacturer, open-backed) |
| Impedance | 4 ohms |
| Mounting Cutout | 238mm (9.37 in) |
| Power Handling | 10-190W recommended amplifier power |
| Sensitivity | 90dB |
| Weight | 7.9 lbs (3.6kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Bowers & Wilkins CWM 7.5 S2: $2,700 per pair Estimated Audio Advice eBay
Older model: the Bowers & Wilkins CWM7.5 (ranked lower, rated 2.6/5). See every Bowers & Wilkins CWM In-Wall generation.
Same family: the Bowers & Wilkins CWM7.3 S2 (larger in-wall, ranked higher, rated 3.3/5).
Pros: A Reference Series in-wall with a 1” Carbon Dome tweeter and a 5” Continuum cone, a forward-firing Flowport and a retrofittable integrated back box, rated 45Hz to 28kHz. Mounting depth is only 4 1/16”.
Cons: No independent measurements yet, so its tonal balance and directivity can’t be compared directly with measured speakers; the rating is estimated from its measured predecessor. Its predecessor measured poorly on axis, so the range is wide. Sensitivity is 86dB.
Full Bowers & Wilkins CWM 7.5 S2 review and specifications →
| Released | 2019 (7 years ago) |
|---|---|
| Bass Extension (-3dB) | 45Hz (manufacturer specified) |
| DIY Kit | No |
| Dimensions | 14”H x 8.3”W x 4”D (356 x 212 x 102 mm) |
| Drivers | 1” Carbon Dome tweeter, 5” Continuum cone mid/bass |
| Frequency Response | 45Hz-28kHz (manufacturer specified) |
| Impedance | 8 ohms nominal, 3.8 ohms minimum (manufacturer specified) |
| Sensitivity | 86dB (2.83V/1m, manufacturer specified) |
| Weight | 8.4 lbs (3.8 kg) each |
| Woofer Cabinet | ported (front Flowport), integrated back box |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons