The KEF CI250RRM-THX ranks #2 out of 5 total In-Wall & In-Ceiling Speakers for sound quality. See Top Recommended Speakers By Attribute for all the top speaker suggestions.
Brand: KEF
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#2 KEF CI250RRM-THX: $2,999.99 Abt Electronics eBay
Pros: Independently measured by Audio Science Review to a genuine 51.3Hz at -3dB and roughly 23.3Hz at -10dB, the deepest bass extension of any in-wall or in-ceiling speaker in this category. It’s a THX-certified 3-way coaxial design, a 10” woofer built around a 4” Uni-Q midrange and 1” aluminum dome tweeter, deliberately voiced for the 30-60 degree off-axis angle typical of a ceiling-mounted Dolby Atmos height or surround channel rather than a straight-down listening position. Run through a receiver’s automated room correction, spinorama’s EQ-adjusted figures show its preference score climbing from 3.76 to 4.78, so it responds well to correction.
Cons: At $2,999.99 each, this is the most expensive speaker in this category. Its raw on-axis measurement trails the Ci3160RLM-THX (preference score 3.76 vs. 4.62) since the driver array is tuned for off-axis dispersion rather than a flat straight-ahead response, and its on-axis deviation averages 1.14dB, one of the roughest of the batch measured on-axis.
How it compares: Just above it: KEF Ci3160RLM-THX - $700 cheaper. Just below it: KEF CI200RR-THX - $1800 cheaper, 1Hz higher bass extension (-3dB).
| Bass Extension (-10dB) | 23.3Hz (measured, spinorama.org ASR data) |
|---|---|
| Bass Extension (-3dB) | 51.3Hz (measured, spinorama.org ASR data) |
| Certification | THX |
| Dimensions | 13.6" x 13.6" x 6.9" (346 x 346 x 175 mm) (168mm mounting depth) |
| Drivers | 10" LF woofer, 4" Uni-Q midrange, 1" vented aluminum dome tweeter with MAT (3-way coaxial) |
| Enclosure | Open-backed, in-ceiling |
| Frequency Response | 28Hz-20kHz +/-6dB (manufacturer, open-backed) |
| Impedance | 8 ohms |
| Mounting Cutout | 300mm (11.81 in) |
| Power Handling | 50-250W recommended amplifier power |
| Sensitivity | 89dB |
| Weight | 13.2 lbs / 6kg (13.2 lbs) |
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