Short answer: the Radiant Acoustics Clarity 66 for better sound quality, the Klipsch RP-8000F II for the lower price. The Radiant Acoustics Clarity 66 ranks #5 of 71 floorstanding speakers at $7998. The Klipsch RP-8000F II ranks #52 at $1159.98, $6838.02 cheaper.
What the Klipsch RP-8000F II offers: Highest sensitivity of the RP II floorstander line (~92dB measured) and the best dynamics/compression behavior of the three under load - the cleanest at high output. Dual 8-inch woofers and the highest power handling in the line. Watch for: Mid-bass sounds lean despite the dual 8-inch woofers, and bass extension disappointed for its size - expected to reach 50Hz, didn’t get there in-room. Has its own edgy upper-mid bump (2-6kHz) that’s harder to EQ out than the other two models’ issues, since it stems from the vertical horn/woofer offset rather than simple tonal balance. The most placement-critical of the three, with the narrowest horizontal (~40-50 degrees) and vertical (+5/-10 degrees) dispersion.
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.
Buy the Klipsch RP-8000F II if the price is the priority over sound quality, or the Radiant Acoustics Clarity 66 if sound quality is the priority over the price.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| Klipsch RP-8000F II | Radiant Acoustics Clarity 66 | |
|---|---|---|
| Price | $1,159.98 per pair | $7,998 per pair |
| Ranked | #52 of 71 in Large Size Floorstanding Speakers | #5 of 71 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 33Hz (measured, Erin's Audio Corner) | 24.4Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 67Hz (measured, Erin's Audio Corner) | 32.2Hz (measured, Audio Science Review) |
| Sensitivity | 92dB (2.83V/1m, measured by Erin's Audio Corner) | 85.9dB (2.83V/1m, measured, Audio Science Review; 86dB manufacturer specified) |
| Drivers | 1" titanium tweeter with 90x90 Tractrix horn, dual 8" cerametallic woofers | Custom waveguide-loaded tweeter with beam-expansion fins, 2x 6.5" Purifi USHINDI aluminum-cone woofers |
| Weight | 61.3 lbs (27.8 kg) | 101.4 lbs (46 kg) each |
| Impedance | 8 ohms nominal (3.7 ohms minimum above 80Hz, measured by Erin's Audio Corner) | 4 ohms nominal |
| Frequency Response | 35Hz - 25kHz (+-3dB, Manufacturer specified) | - |
| Crossover Frequency | 1630Hz | 2.4kHz |
| Power Handling | 150W continuous, 600W peak | - |
| Dimensions | 43.1" x 10.8" x 18.3" (1095 x 275 x 464 mm) | 40.4"H x 8.7"W x 14"D (1025 x 222 x 355 mm) |
| Woofer Cabinet | ported, rear | ported, large rear port |
| Spinorama Preference Score | 4.47 | 5.10 |
| Spinorama Preference Score with Perfect Sub | 6.21 | 6.12 |
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
Klipsch RP-8000F II: $1,159.98 per pair Amazon eBay
Pros: Highest sensitivity of the RP II floorstander line (~92dB measured) and the best dynamics/compression behavior of the three under load - the cleanest at high output. Dual 8-inch woofers and the highest power handling in the line. Measured bass extension of 67Hz (-3dB), with a measured sensitivity of 92dB.
Cons: Mid-bass sounds lean despite the dual 8-inch woofers, and bass extension disappointed for its size - expected to reach 50Hz, didn’t get there in-room. Has its own edgy upper-mid bump (2-6kHz) that’s harder to EQ out than the other two models’ issues, since it stems from the vertical horn/woofer offset rather than simple tonal balance. The most placement-critical of the three, with the narrowest horizontal (~40-50 degrees) and vertical (+5/-10 degrees) dispersion.
Full Klipsch RP-8000F II review and specifications →
| Bass Extension (-10dB) | 33Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 67Hz (measured, Erin's Audio Corner) |
| Crossover Frequency | 1630Hz |
| Dimensions | 43.1" x 10.8" x 18.3" (1095 x 275 x 464 mm) |
| Drivers | 1" titanium tweeter with 90x90 Tractrix horn, dual 8" cerametallic woofers |
| Frequency Response | 35Hz - 25kHz (+-3dB, Manufacturer specified) |
| Impedance | 8 ohms nominal (3.7 ohms minimum above 80Hz, measured by Erin's Audio Corner) |
| Power Handling | 150W continuous, 600W peak |
| Sensitivity | 92dB (2.83V/1m, measured by Erin's Audio Corner) |
| Spinorama Preference Score | 4.47 |
| Spinorama Preference Score with Perfect Sub | 6.21 |
| Weight | 61.3 lbs (27.8 kg) |
| Woofer Cabinet | ported, rear |
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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 Revel F228Be
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