Short answer: the Radiant Acoustics Clarity 66. It ranks #11 of 228 floorstanding speakers by sound quality, rated 4.6/5, at $7,998. The KEF R11 Meta ranks #46, rated 4.4/5, at $6,999.98, $998.02 cheaper, not enough of a saving to outweigh the sound-quality gap.
The Radiant Acoustics Clarity 66 is the deeper-bass pick. Highly accurate floorstanding speakers with Purifi woofers and bass deep enough to skip a subwoofer. Its bass reaches about 32.2Hz before falling 3dB, against 64Hz for the KEF R11 Meta. The tradeoff: Vertical directivity is narrow and horizontal coverage is uneven, so listening height and placement affect tonal balance.
The case for the KEF R11 Meta: Slim floorstanding speakers with accurate sound, very deep bass and extremely low distortion even when played loud, with excellent coaxial imaging. The tradeoff: A dip around 1-1.2kHz on-axis is attributed to a diffraction effect, and shows up as a smaller dip in the predicted in-room response.
Buy the Radiant Acoustics Clarity 66. It is rated higher for sound quality, and saving $998.02 with the KEF R11 Meta does not make up for the sound-quality gap.
Want more options? Browse the full Passive Home rankings.
Highly accurate floorstanding speakers with Purifi woofers and bass deep enough to skip a subwoofer.
Slim floorstanding speakers with accurate sound, very deep bass and extremely low distortion even when played loud, with excellent coaxial imaging.
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Specifications Side By Side
| Radiant Acoustics Clarity 66 | KEF R11 Meta | |
|---|---|---|
| Price | $7,998 per pair | $6,999.98 per pair |
| Ranked | #11 of 228 in Large Size Floorstanding Speakers | #46 of 228 in Large Size Floorstanding Speakers |
| Bass Extension (-3dB) | 32.2Hz (measured, Audio Science Review) | 64Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 24.4Hz (measured, Audio Science Review) | 31Hz (measured, Audio Science Review) |
| Sensitivity | 85.9dB (2.83V/1m, measured, Audio Science Review; 86dB manufacturer specified) | 89.5dB |
| Drivers | Custom waveguide-loaded tweeter with beam-expansion fins, 2x 6.5” Purifi USHINDI aluminum-cone woofers | 4 x 165 mm (6.5 in.) hybrid aluminium cone woofers, 125 mm (5 in.) aluminium cone midrange, 25 mm (1 in.) vented aluminium dome with MAT tweeter |
| Dimensions | 40.4”H x 8.7”W x 14”D (1025 x 222 x 355 mm) | 51”H x 12.2”W x 15.1”D (1295.4 x 309.9 x 383.5 mm) |
| Weight | 101.4 lbs (46 kg) each | 80.5 lbs (36.5 kg) each |
| Impedance | 4 ohms nominal | 4 ohms |
| Crossover Frequency | 2.4kHz | - |
| Woofer Cabinet | ported, large rear port | ported, rear |
| Spinorama Preference Score | 6.01 | 5.91 |
| Spinorama Preference Score with Perfect Sub | 7.03 | 7.32 |
| DIY Kit | No | No |
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