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 Klipsch Forte IV ranks #122, rated 4.0/5, at $5,499.98, $2,498.02 cheaper, a saving that is not big enough to make up the sound-quality gap.
The Radiant Acoustics Clarity 66 is the more accurate, deeper-bass choice. Highly accurate floorstanding speakers with Purifi woofers and bass deep enough to skip a subwoofer. Its measured preference score, a predictor of how neutral it sounds, is 6.01 against 3.78 for the Klipsch Forte IV. Its bass reaches about 32.2Hz before falling 3dB, against 82Hz for the Klipsch Forte IV. Watch for: Vertical directivity is narrow and horizontal coverage is uneven, so listening height and placement affect tonal balance.
What the Klipsch Forte IV does well: A heritage horn tower with a huge, wide soundstage, low distortion and a quiet, resonance free cabinet. The catch: Contrary to the classic Klipsch reputation for being forward and bright, this model is actually somewhat recessed in the 1.5-4kHz “presence” region, which can make some tracks sound dull or lacking in detail.
Buy the Radiant Acoustics Clarity 66. It is rated higher for sound quality, and saving $2,498.02 with the Klipsch Forte IV 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.
A heritage horn tower with a huge, wide soundstage, low distortion and a quiet, resonance free cabinet.
Prices on this page were last checked October 31, 2026 at 7:11 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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Specifications Side By Side
| Radiant Acoustics Clarity 66 | Klipsch Forte IV | |
|---|---|---|
| Price | $7,998 per pair | $5,499.98 per pair |
| Ranked | #11 of 228 in Large Size Floorstanding Speakers | #122 of 228 in Large Size Floorstanding Speakers |
| Bass Extension (-3dB) | 32.2Hz (measured, Audio Science Review) | 82Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 24.4Hz (measured, Audio Science Review) | 39Hz (measured, Erin’s Audio Corner) |
| Sensitivity | 85.9dB (2.83V/1m, measured, Audio Science Review; 86dB manufacturer specified) | 93.8dB (measured average, Erin’s Audio Corner; manufacturer rates 99dB in-room / ~94dB anechoic) |
| Drivers | Custom waveguide-loaded tweeter with beam-expansion fins, 2x 6.5” Purifi USHINDI aluminum-cone woofers | 1x 12” (305mm) fiber-composite woofer + 15” passive radiator, 1x 1.75” compression driver midrange on horn, 1x 1” titanium compression tweeter on horn |
| Dimensions | 40.4”H x 8.7”W x 14”D (1025 x 222 x 355 mm) | 36”H x 16.5”W x 13”D (914.4 x 419.1 x 330.2 mm) |
| Weight | 101.4 lbs (46 kg) each | 117.3 lbs (53.2 kg) |
| Impedance | 4 ohms nominal | 8 ohms |
| Crossover Frequency | 2.4kHz | - |
| Woofer Cabinet | ported, large rear port | passive radiator |
| Spinorama Preference Score | 6.01 | 3.78 |
| Spinorama Preference Score with Perfect Sub | 7.03 | 5.72 |
| DIY Kit | No | No |
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