Short answer: choose the CI200RR-THX for a usable surround or height channel; choose the CI50R only for a tiny, legacy background-audio location.
The CI200RR-THX is the capable ceiling speaker. Its 8-inch woofer and 1.5-inch Uni-Q tweeter, 90dB sensitivity, and THX certification give it considerably more capacity than a micro-speaker. Its 82.5Hz reported -3dB extension means it should still be crossed to a subwoofer for demanding playback.
The CI50R exists for exceptionally tight spaces. At 80mm square and 55mm deep, it can fit locations unavailable to the CI200RR-THX. Its 2-inch driver reaches only around 170Hz at -3dB, so it needs a high crossover and cannot replace a conventional surround or height speaker.
Buy the CI200RR-THX for current, THX-certified ceiling audio.
Buy the CI50R only for a compact legacy fill or ambient-audio use.
Specifications Side By Side
| KEF CI200RR-THX | KEF CI50R | |
|---|---|---|
| Price | $898.75 | Discontinued |
| Ranked | #3 of 5 in In-Wall & In-Ceiling Speakers | #5 of 5 in In-Wall & In-Ceiling Speakers |
| Drivers | 8" woofer, 1.5" Uni-Q tweeter (2.2kHz crossover) | 2" full-range driver |
| Enclosure | Open-backed, in-ceiling | Open-backed (optional rear enclosure), in-ceiling |
| Mounting Cutout | 238mm (9.37 in) | 70mm (2.76 in) with rear enclosure |
| Dimensions | 11.4" x 11.4" x 5.2" (290 x 290 x 132.6 mm) (126.5mm mounting depth) | 3.1" x 3.1" x 2.2" (80 x 80 x 55 mm) |
| Weight | 7.9 lbs / 3.6kg | 2.2 lbs / 1.0kg |
| Sensitivity | 90dB | 82dB |
| Impedance | 4 ohms | 6 ohms |
| Power Handling | 10-190W recommended amplifier power | 10-30W recommended amplifier power |
| Frequency Response | 33Hz-28kHz +/-6dB (manufacturer, open-backed) | 125Hz-20kHz +/-6dB (manufacturer, open-backed) |
| Bass Extension (-3dB) | 82.5Hz (measured, spinorama.org vendor data) | 170Hz (measured, spinorama.org vendor data) |
| Bass Extension (-10dB) | 30.5Hz (measured, spinorama.org vendor data) | 113Hz (measured, spinorama.org vendor data) |
| Certification | THX | - |
| Discontinued | - | Yes |
Related Speaker Comparisons
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- KEF Ci3160RLM-THX vs KEF CI130.2CR
- KEF CI250RRM-THX vs KEF CI130.2CR
- KEF Ci3160RLM-THX vs KEF CI250RRM-THX
- KEF CI200RR-THX vs KEF CI130.2CR
- KEF Ci3160RLM-THX vs KEF CI200RR-THX
Prices on this page were last checked September 7, 2026 at 7:47 AM 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: $898.75 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 $1,199.99 each, it costs about half of KEF’s flagship Ci3160RLM-THX while carrying the same THX certification.
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 |
| 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
KEF CI50R: Discontinued eBay
Pros: At just 80 x 80mm and 55mm deep, this is by far the smallest speaker in this category, small enough to fit into spaces, tight closets, cabinetry, shallow ceiling cavities, that none of the other in-wall or in-ceiling models here can reach.
Cons: No longer sold as a current KEF product; dealer listings mark it a legacy item replaced in KEF’s lineup, so buying one now means used or leftover new-old stock rather than a current retail purchase. It measures the shallowest bass extension of any speaker in this category by a wide margin, reaching only about 170Hz at -3dB and roughly 113Hz at -10dB, consistent with a small background or ambient-audio speaker rather than one built for full-range listening. Discontinued.
Full KEF CI50R review and specifications →
| Bass Extension (-10dB) | 113Hz (measured, spinorama.org vendor data) |
|---|---|
| Bass Extension (-3dB) | 170Hz (measured, spinorama.org vendor data) |
| Dimensions | 3.1" x 3.1" x 2.2" (80 x 80 x 55 mm) |
| Discontinued | Yes |
| Drivers | 2" full-range driver |
| Enclosure | Open-backed (optional rear enclosure), in-ceiling |
| Frequency Response | 125Hz-20kHz +/-6dB (manufacturer, open-backed) |
| Impedance | 6 ohms |
| Mounting Cutout | 70mm (2.76 in) with rear enclosure |
| Power Handling | 10-30W recommended amplifier power |
| Sensitivity | 82dB |
| Weight | 2.2 lbs / 1.0kg |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons