Short answer: the Radiant Acoustics Clarity 66 for better sound quality, the Revel F228Be for the lower price. The Radiant Acoustics Clarity 66 ranks #5 of 71 floorstanding speakers at $7998. The Revel F228Be ranks #16 at $4500, $3498 cheaper.
What the Radiant Acoustics Clarity 66 offers: ASR’s revised Spinorama measurement shows bass reaching 32.2Hz at -3dB and 27.8Hz at -6dB, giving substantial low-end weight without a subwoofer. The response spans 2.3dB from 300Hz to 5kHz, with preference scores of 5.10 standalone and 6.12 with an ideal subwoofer. The review’s exceptionally low bass distortion at ordinary levels complements that extension, while dual 6.5-inch Purifi woofers provide a strong foundation for full-range listening. Watch for: Vertical directivity is narrow and horizontal coverage is uneven, so listening height and placement affect tonal balance. Treble resonances and response irregularities keep it from reference-level neutrality. Spinorama’s modeled EQ improves the scores to 6.09 standalone and 6.99 with an ideal subwoofer, but those are corrected results, not stock performance. Measured sensitivity is 85.9dB at 2.83V/1m with a nominal 4-ohm load; use an amplifier comfortable driving 4 ohms. Distortion rises at very high playback levels.
What the Revel F228Be offers: CEA2034 spinorama shows an essentially flat on-axis response with very nice directivity. Predicted in-room response is nearly perfect, with a smooth slope down from bass to treble. Horizontal beamwidth of about ±70 degrees is wide and holds up well until narrowing above 8kHz. Vertical directivity offers more degrees of listening-height freedom than a typical bookshelf design, a benefit of this tower’s driver layout. Distortion is extremely low across the full audio range at 86dB SPL/1m and stays comfortable even at 96dB SPL/1m. Near-field measurements of the individual drivers show nice, well-integrated crossover behavior with only low-level resonances. Watch for: Minimum impedance dips to 3.4 ohms with a secondary rise around 2kHz, calling for an amplifier comfortable with a demanding load. Very expensive and very heavy (51 kg each).
Buy the Radiant Acoustics Clarity 66 if sound quality is the priority over the price, or the Revel F228Be if the price is the priority over sound quality.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| Radiant Acoustics Clarity 66 | Revel F228Be | |
|---|---|---|
| Price | $7,998 per pair | $4500 per pair |
| Ranked | #5 of 71 in Large Size Floorstanding Speakers | #16 of 71 in Large Size Floorstanding Speakers |
| Bass Extension (-3dB) | 32.2Hz (measured, Audio Science Review) | 61Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 24.4Hz (measured, Audio Science Review) | 25Hz (measured, Audio Science Review) |
| Sensitivity | 85.9dB (2.83V/1m, measured, Audio Science Review; 86dB manufacturer specified) | 89.3dB (300Hz-3kHz @ 2.83V/1m, measured by Audio Science Review; 90dB manufacturer specified) |
| Drivers | Custom waveguide-loaded tweeter with beam-expansion fins, 2x 6.5" Purifi USHINDI aluminum-cone woofers | Dual 8" (200mm) Deep Ceramic Composite aluminum cones, with cast frames woofers, 5-1/4" (130mm) Deep Ceramic Composite aluminum cone, with cast frame midrange, 1" (25mm) Beryllium dome, with acoustic lens waveguide tweeter |
| Dimensions | 40.4"H x 8.7"W x 14"D (1025 x 222 x 355 mm) | 50.9"H x 13.5"W x 17.6"D (1292.9 x 342.9 x 447 mm) |
| Weight | 101.4 lbs (46 kg) each | 112.4 lbs (51 kg) each |
| Impedance | 4 ohms nominal | 8 ohms |
| Crossover Frequency | 2.4kHz | - |
| Woofer Cabinet | ported, large rear port | ported, front |
| Spinorama Preference Score | 5.10 | 5.20 |
| Spinorama Preference Score with Perfect Sub | 6.12 | 6.70 |
Related Speaker Comparisons
How Radiant Acoustics Clarity 66 compares with other leading options:
- Radiant Acoustics Clarity 66 vs KEF Blade Two Meta
- Radiant Acoustics Clarity 66 vs MoFi SourcePoint V10 Master Edition
- Radiant Acoustics Clarity 66 vs MoFi SourcePoint 888
- Radiant Acoustics Clarity 66 vs Ascend Acoustics ELX Ribbon Tower
- Radiant Acoustics Clarity 66 vs Revel F328Be
Prices on this page were last checked September 16, 2026 at 12:41 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
Radiant Acoustics Clarity 66: $7,998 per pair Radiant Acoustics eBay
Pros: ASR’s revised Spinorama measurement shows bass reaching 32.2Hz at -3dB and 27.8Hz at -6dB, giving substantial low-end weight without a subwoofer. The response spans 2.3dB from 300Hz to 5kHz, with preference scores of 5.10 standalone and 6.12 with an ideal subwoofer. The review’s exceptionally low bass distortion at ordinary levels complements that extension, while dual 6.5-inch Purifi woofers provide a strong foundation for full-range listening. Measured bass extension of 32.2Hz (-3dB), with a measured sensitivity of 85.9dB.
Cons: Vertical directivity is narrow and horizontal coverage is uneven, so listening height and placement affect tonal balance. Treble resonances and response irregularities keep it from reference-level neutrality. Spinorama’s modeled EQ improves the scores to 6.09 standalone and 6.99 with an ideal subwoofer, but those are corrected results, not stock performance. Measured sensitivity is 85.9dB at 2.83V/1m with a nominal 4-ohm load; use an amplifier comfortable driving 4 ohms. Distortion rises at very high playback levels.
Full Radiant Acoustics Clarity 66 review and specifications →
| Bass Extension (-10dB) | 24.4Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 32.2Hz (measured, Audio Science Review) |
| Crossover Frequency | 2.4kHz |
| Dimensions | 40.4"H x 8.7"W x 14"D (1025 x 222 x 355 mm) |
| Drivers | Custom waveguide-loaded tweeter with beam-expansion fins, 2x 6.5" Purifi USHINDI aluminum-cone woofers |
| Impedance | 4 ohms nominal |
| Sensitivity | 85.9dB (2.83V/1m, measured, Audio Science Review; 86dB manufacturer specified) |
| Spinorama Preference Score | 5.10 |
| Spinorama Preference Score with Perfect Sub | 6.12 |
| Weight | 101.4 lbs (46 kg) each |
| Woofer Cabinet | ported, large rear port |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Radiant Acoustics Clarity 66 vs Ascend Acoustics ELX Ribbon Tower
- Radiant Acoustics Clarity 66 vs MoFi SourcePoint 888
- Radiant Acoustics Clarity 66 vs MoFi SourcePoint V10 Master Edition
- Radiant Acoustics Clarity 66 vs KEF Blade Two Meta
- Radiant Acoustics Clarity 66 vs Revel F328Be
- Radiant Acoustics Clarity 66 vs Revel F226Be
- Radiant Acoustics Clarity 66 vs JBL 4367
- Radiant Acoustics Clarity 66 vs JBL Studio 698
- See all 23 comparisons
Revel F228Be: $4500 per pair Crutchfield eBay
Pros: CEA2034 spinorama shows an essentially flat on-axis response with very nice directivity. Predicted in-room response is nearly perfect, with a smooth slope down from bass to treble. Horizontal beamwidth of about ±70 degrees is wide and holds up well until narrowing above 8kHz. Vertical directivity offers more degrees of listening-height freedom than a typical bookshelf design, a benefit of this tower’s driver layout. Distortion is extremely low across the full audio range at 86dB SPL/1m and stays comfortable even at 96dB SPL/1m. Near-field measurements of the individual drivers show nice, well-integrated crossover behavior with only low-level resonances. Measured bass extension of 61Hz (-3dB), with a measured sensitivity of 89.3dB.
Cons: Minimum impedance dips to 3.4 ohms with a secondary rise around 2kHz, calling for an amplifier comfortable with a demanding load. Very expensive and very heavy (51 kg each).
Full Revel F228Be review and specifications →
| Bass Extension (-10dB) | 25Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 61Hz (measured, Audio Science Review) |
| Dimensions | 50.9"H x 13.5"W x 17.6"D (1292.9 x 342.9 x 447 mm) |
| Drivers | Dual 8" (200mm) Deep Ceramic Composite aluminum cones, with cast frames woofers, 5-1/4" (130mm) Deep Ceramic Composite aluminum cone, with cast frame midrange, 1" (25mm) Beryllium dome, with acoustic lens waveguide tweeter |
| Impedance | 8 ohms |
| Sensitivity | 89.3dB (300Hz-3kHz @ 2.83V/1m, measured by Audio Science Review; 90dB manufacturer specified) |
| Spinorama Preference Score | 5.20 |
| Spinorama Preference Score with Perfect Sub | 6.70 |
| Weight | 112.4 lbs (51 kg) each |
| Woofer Cabinet | ported, front |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons