Short answer: pick the JTR Speakers Captivator 212PRO if you want sound quality that has been measured and ranked; the KEF KC92 is unmeasured so far, so its case rests on features and price.
What the KEF KC92 offers: Twin 9-inch drivers mounted back to back in a force-cancelling layout that reduces cabinet vibration, driven by 1,000W RMS (2 x 500W) of Class D amplification with KEF’s Music Integrity Engine DSP.
What the JTR Speakers Captivator 212PRO brings: Dual 12-inch ported with 1200W DSP amp and full digital sound processor.
Price: the KEF KC92 lists at $2,499.99 and the JTR Speakers Captivator 212PRO at $2,799.
Buy the JTR Speakers Captivator 212PRO if you want a speaker whose sound quality has been measured and ranked.
Buy the KEF KC92 if you prefer its design or features, and you can wait for measurements to confirm how it sounds.
Looking for alternatives? See the complete Subwoofers rankings.
Specifications Side By Side
| KEF KC92 | JTR Speakers Captivator 212PRO | |
|---|---|---|
| Price | $2,499.99 | $2,600 |
| Ranked | - | #1 of 145 in Medium Home Subwoofers (30-75 lbs) |
| Enclosure | sealed | ported, front |
| Drivers | 2x 9” drivers, force-cancelling | 2x 12” (305mm) drivers |
| Amplifier Power | 1000W RMS (2 x 500W) | 1200W RMS; Class D with DSP |
| Frequency Response | 11-200Hz, ±3dB | - |
| Maximum SPL | 110dB (manufacturer specified) | - |
| Dimensions | 352.5H x 330W x 360.5D mm | 16”H x 30”W x 22.5”D (406.4 x 762.0 x 571.5 mm) |
| Weight | 20.0 kg | 71 lbs (32.2 kg) |
| Cabinet Color | Black Gloss, White Gloss | black |
| Country | United Kingdom | United States |
| Output SPL at 25 Hz | - | 95.4 dB |
| Output SPL at 31.5 Hz | - | 112.2 dB |
| Output SPL at 40 Hz | - | 122.7 dB |
| Output SPL at 50 Hz | - | 129.2 dB |
| Output SPL at 63 Hz | - | 131.3 dB |
| Output SPL at 80 Hz | - | 133.2 dB |
| Output SPL at 100 Hz | - | 134.6 dB |
| Output SPL at 125 Hz | - | 135.2 dB |
| CEA-2010-A Average (40-80Hz) | - | 129.1 dB |
| Warranty | - | 5/3 |
| Measurement Source | - | Data-bass |
| Inputs | - | XLR and RCA |
| XLR Input | - | Yes |
| RCA Input | - | Yes |
| TRS Input | - | No |
| Optical Input | - | No |
| Coaxial Input | - | No |
| USB Input | - | No |
| HDMI Input | - | No |
| AES Input | - | No |
| Aux Input | - | No |
Prices on this page were last checked September 29, 2026 at 3:43 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 KC92: $2,499.99 KEF eBay
Older model: the Kef KF92 (rated 3/5).
Pros: Twin 9-inch drivers mounted back to back in a force-cancelling layout that reduces cabinet vibration, driven by 1,000W RMS (2 x 500W) of Class D amplification with KEF’s Music Integrity Engine DSP. KEF rates it at 11Hz to 200Hz (±3dB) from a cabinet only about 35cm on each side. Speaker-level inputs and an expansion port for KEF’s KW1 wireless adapter.
Cons: No independent measurements yet, so its output can’t be compared with ranked subwoofers. KEF rates maximum output at 110dB, modest for a subwoofer at this price, so it suits music and smaller rooms more than reference-level home theater.
Full KEF KC92 review and specifications →
| Amplifier Power | 1000W RMS (2 x 500W) |
|---|---|
| Cabinet Color | Black Gloss, White Gloss |
| Country | United Kingdom |
| Dimensions | 352.5H x 330W x 360.5D mm |
| Drivers | 2x 9” drivers, force-cancelling |
| Enclosure | sealed |
| Frequency Response | 11-200Hz, ±3dB |
| Maximum SPL | 110dB (manufacturer specified) |
| Weight | 20.0 kg |
- Links
- Reviews, Comparisons and Sound Samples
- These figures are manufacturer-specified rather than independently measured.
- Head-to-Head Comparisons
JTR Speakers Captivator 212PRO: $2,600 JTR Speakers eBay
Pros: Dual 12-inch ported with 1200W DSP amp and full digital sound processor. Dual-12 output beyond impressive with distortion-free performance. Bulletproof construction for pro sound installations.
Cons: Premium pricing at $2799, ported room interaction, and 32 kg mid-size footprint.
Notes: Looks like “PA sub”
Full JTR Speakers Captivator 212PRO review and specifications →
| AES Input | No |
|---|---|
| Amplifier Power | 1200W RMS; Class D with DSP |
| Aux Input | No |
| CEA-2010-A Average (40-80Hz) | 129.1 dB |
| Cabinet Color | black |
| Coaxial Input | No |
| Country | United States |
| Dimensions | 16”H x 30”W x 22.5”D (406.4 x 762.0 x 571.5 mm) |
| Drivers | 2x 12” (305mm) drivers |
| Enclosure | ported, front |
| HDMI Input | No |
| Inputs | XLR and RCA |
| Measurement Source | Data-bass |
| Optical Input | No |
| Output SPL at 25 Hz | 95.4 dB |
| Output SPL at 31.5 Hz | 112.2 dB |
| Output SPL at 40 Hz | 122.7 dB |
| Output SPL at 50 Hz | 129.2 dB |
| Output SPL at 63 Hz | 131.3 dB |
| Output SPL at 80 Hz | 133.2 dB |
| Output SPL at 100 Hz | 134.6 dB |
| Output SPL at 125 Hz | 135.2 dB |
| RCA Input | Yes |
| TRS Input | No |
| USB Input | No |
| Warranty | 5/3 |
| Weight | 71 lbs (32.2 kg) |
| XLR Input | Yes |
- Links
- Reviews, Comparisons and Sound Samples
- Independently measured by Data-bass; the published figures above come from this ASR subwoofer measurement thread.
- Head-to-Head Comparisons
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