Short answer: both are discontinued, so this only matters if you are buying used. Used, the Revel F208 is the better pick: it ranks #27 of 188 floorstanding speakers by sound quality (rated 4.5/5), against #77 (rated 4.2/5) for the Infinity Primus 360. If you want one new, the Revel F228Be replaces the Revel F208 and is rated 4.5/5 at $11,000.
The Revel F208 is the more accurate, deeper-bass option. CEA2034 spinorama shows a fairly even on-axis response with sensitivity matching spec at ~87-88dB. Its measured preference score, a predictor of how neutral it sounds, is 6.35 against 4.97 for the Infinity Primus 360. Its bass reaches about 47Hz before falling 3dB, against 53Hz for the Infinity Primus 360. Watch for: Some directivity error and tweeter-response ripple right at the 2.2kHz crossover point.
The case for the Infinity Primus 360: A three-way tower from 2005 (two 6.5” mid-woofers, a 4” mid-range, and a 0.75” dome tweeter, 8 ohms nominal) that holds up remarkably well by modern measurement standards: on-axis linearity is within about ±2dB, and the listening window stays consistent out to roughly ±30° horizontal and ±10° vertical off the mid-range axis. The catch: Manufacturer-spec sensitivity of 93dB runs about 3-4dB optimistic versus the measured 89.4dB average.
Buy the Revel F208 only if you find one used in good condition; both are discontinued, and it is the better rated of the two. For a new speaker, buy the Revel F228Be, which replaces the Revel F208.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| Revel F208 | Infinity Primus 360 | |
|---|---|---|
| Price | $4,800 per pair used, Discontinued | $650 per pair Discontinued |
| Ranked | #27 of 188 in Large Size Floorstanding Speakers | #77 of 188 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 24Hz (measured, Audio Science Review) | 37Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 47Hz (measured, Audio Science Review) | 53Hz (measured, Erin’s Audio Corner) |
| Dimensions | 46.6”H x 13.5”W x 14.8”D (1183.6 x 342.9 x 375.9 mm) | 39” x 8.2” x 13” (990 x 208 x 330 mm) |
| Impedance | 8 ohms nominal, 3.5 ohms minimum (measured, Audio Science Review) | 8 ohms nominal, 3.5 ohms minimum (measured, Erin’s Audio Corner) |
| Drivers | Dual 8” (20 cm) Aluminum Cone, Cast-frame Woofers, 5.25” (13.3 cm) Aluminum Cone, Cast-frame Midrange, 1” (2.5 cm) Aluminum Tweeter with Acoustic Lens Waveguide | Two 6.5” mid-woofers, 4” mid-range, 0.75” dome tweeter |
| Sensitivity | 88.2dB (measured by Audio Science Review; 88.5dB manufacturer specified) | 89.4dB (measured, Erin’s Audio Corner; 93dB manufacturer specified) |
| Weight | 79.4 lbs (36 kg) each | 48.5 lbs (22 kg) each |
| Woofer Cabinet | ported, front | - |
| Spinorama Preference Score | 6.35 | 4.97 |
| Spinorama Preference Score with Perfect Sub | 7.67 | 7.10 |
| DIY Kit | No | No |
| Frequency Response | - | 38Hz - 20kHz (±3dB, Manufacturer specified) |
| Crossover Frequency | - | 350Hz & 3.3kHz, 24dB/octave |
| Recommended Power | - | 10-200W |
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The Two Speakers In Full
Revel F208: $4,800 per pair used Discontinued eBay
Newer model: the Revel F228Be, ranked lower, rated 4.5/5.
Same family: the Revel M105 (smaller bookshelf, rated 4.2/5), the Revel M106 (larger bookshelf, rated 4.6/5), the Revel F206 (smaller floorstanding, ranked lower, rated 4.5/5), the Revel Performa3 C205 (smaller center, rated 4.1/5) and the Revel Performa3 C208 (larger center, rated 4/5).
Pros: CEA2034 spinorama shows a fairly even on-axis response with sensitivity matching spec at ~87-88dB. Predicted in-room response is a smooth, textbook-quality downward slope that should translate well to most rooms without correction. Early reflections sum so cleanly with the direct sound that side-wall absorption isn’t recommended: it would work against the speaker’s naturally well-integrated off-axis behavior. Distortion stays below 0.5% from 100Hz up at 96dB/1m, with all distortion components falling below audible threshold above 200Hz. Very wide horizontal directivity of about ±75 degrees. Measured performance was judged very close to the flagship Revel Ultima2 Salon2, and Revel’s speakers (including this one) are developed using Harman’s double-blind listening test methodology. Preference score of 7.4 (7.7 with a subwoofer added). Measured bass extension of 47Hz (-3dB), with a measured sensitivity of 88.2dB.
Cons: Some directivity error and tweeter-response ripple right at the 2.2kHz crossover point. A notable on-axis dip at about 4kHz, attributed to probable cabinet diffraction. Cumulative spectral decay (waterfall) shows an unexplained resonance around 4-5kHz that the reviewer couldn’t pin down a clear cause for. Vertical directivity shows narrowband interference nulls just above and below the tweeter axis (roughly 2-3kHz), typical of a non-coaxial tower with vertically separated drivers, so listening height matters more than it would with a coincident design. Minimum impedance dips to 3.4 ohms, calling for a robust, high-current amplifier. Distortion climbs substantially below about 80-100Hz (up to ~5% in the deep bass) when driven hard, an excursion-limited trade-off typical of towers at high output. Isolating the woofers alone shows their usable range ending around 500-700Hz at the crossover, with somewhat elevated (though still low in absolute terms) 2nd/3rd harmonic distortion in the 100-300Hz region. Discontinued.
Full Revel F208 review and specifications →
| Bass Extension (-10dB) | 24Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 47Hz (measured, Audio Science Review) |
| DIY Kit | No |
| Dimensions | 46.6”H x 13.5”W x 14.8”D (1183.6 x 342.9 x 375.9 mm) |
| Drivers | Dual 8” (20 cm) Aluminum Cone, Cast-frame Woofers, 5.25” (13.3 cm) Aluminum Cone, Cast-frame Midrange, 1” (2.5 cm) Aluminum Tweeter with Acoustic Lens Waveguide |
| Impedance | 8 ohms nominal, 3.5 ohms minimum (measured, Audio Science Review) |
| Sensitivity | 88.2dB (measured by Audio Science Review; 88.5dB manufacturer specified) |
| Spinorama Preference Score | 6.35 |
| Spinorama Preference Score with Perfect Sub | 7.67 |
| Weight | 79.4 lbs (36 kg) each |
| Woofer Cabinet | ported, front |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
Infinity Primus 360: $650 per pair Discontinued eBay
Same family: the Infinity Primus 150 (bookshelf, rated 3.4/5).
Pros: A three-way tower from 2005 (two 6.5” mid-woofers, a 4” mid-range, and a 0.75” dome tweeter, 8 ohms nominal) that holds up remarkably well by modern measurement standards: on-axis linearity is within about ±2dB, and the listening window stays consistent out to roughly ±30° horizontal and ±10° vertical off the mid-range axis. Horizontal directivity is well controlled out to about ±75° before tonality starts to drift, meaning the reflected sound in a room stays close in character to the direct sound: a speaker that takes EQ well without fighting itself. Harmonic distortion measures low at both 86dB and 96dB, and multitone distortion stays under the reviewer’s 3% threshold. Silky, smooth midrange with a rich lower-midrange/upper-bass character. No mechanical issues or surround degradation found in a 20-year-old pair, and a second unit measured within about 1-1.5dB of the first, suggesting good long-term consistency for the design. Measured bass extension of 53Hz (-3dB), with a measured sensitivity of 89.4dB.
Cons: Manufacturer-spec sensitivity of 93dB runs about 3-4dB optimistic versus the measured 89.4dB average. Bass output drops off fairly quickly below about 50Hz in-room (F3 53Hz, F10 37Hz), so a subwoofer is needed for real low-end extension. Resonances show up around 170Hz, 220Hz, and 350Hz. On-axis, the lower treble can sound a bit bright or sibilant when the speaker is aimed directly at the listener; toeing out about 10-15° (rather than the more extreme 30°) gave the best balance, and some sidewall acoustic absorption further tamed a 4-5kHz peak. Placed close to the rear wall, bass gets boomy: pulling the speakers out about a foot resolves most of it, with roughly 1.5 feet from the wall as a good compromise between bass character and typical room aesthetics. Straying beyond about 25° above or below the mid-range axis introduces audible suckout. No longer in production, so it’s a used/secondhand purchase only.
Full Infinity Primus 360 review and specifications →
| Bass Extension (-10dB) | 37Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 53Hz (measured, Erin’s Audio Corner) |
| Crossover Frequency | 350Hz & 3.3kHz, 24dB/octave |
| DIY Kit | No |
| Dimensions | 39” x 8.2” x 13” (990 x 208 x 330 mm) |
| Drivers | Two 6.5” mid-woofers, 4” mid-range, 0.75” dome tweeter |
| Frequency Response | 38Hz - 20kHz (±3dB, Manufacturer specified) |
| Impedance | 8 ohms nominal, 3.5 ohms minimum (measured, Erin’s Audio Corner) |
| Recommended Power | 10-200W |
| Sensitivity | 89.4dB (measured, Erin’s Audio Corner; 93dB manufacturer specified) |
| Spinorama Preference Score | 4.97 |
| Spinorama Preference Score with Perfect Sub | 7.10 |
| Weight | 48.5 lbs (22 kg) each |
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