Short answer: the KEF R5 for off-axis consistency, the Revel F328Be for efficiency. The R5’s coincident Uni-Q midrange/tweeter keeps horizontal and vertical off-axis responses tracking the direct sound smoothly, but the gap between its 77Hz F3 and 33Hz F10 signals a gradual bass contour, so a subwoofer and roughly 80Hz high-pass are recommended. The F328Be is quite flat on-axis with superb directivity and efficiency above 90dB.
Buy the Revel F328Be. It is rated higher for sound quality, and the KEF R5 is discontinued, so it is only available used.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| Revel F328Be | KEF R5 | |
|---|---|---|
| Price | $19,359.90 per pair | $2,999 per pair Discontinued |
| Ranked | #5 of 74 in Large Size Floorstanding Speakers | #22 of 74 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 39Hz (measured, Audio Science Review) | 33Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 74Hz (measured, Audio Science Review) | 77Hz (measured, Erin’s Audio Corner) |
| Dimensions | 50.9”H x 13.5”W x 17.6”D (1292.9 x 342.9 x 447 mm) | 40.4”H x 6.9”W x 13.5”D |
| Impedance | 8 ohms nominal (3 ohms minimum, measured by Audio Science Review) | Approximately 3.5 ohms minimum near 150Hz (measured, Erin’s Audio Corner) |
| Drivers | Three 8” (200mm) Deep Ceramic Composite aluminum cones, with cast frames woofer, 5-1/4” (130mm) Deep Ceramic Composite aluminum cone, with cast frame midrange, 1” (25mm) Beryllium dome, with acoustic lens waveguide tweeter | 1” aluminum tweeter coaxial with 5” midrange; dual 5.25” woofers |
| Sensitivity | 91dB (measured, Audio Science Review) | Approximately 86dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Weight | 112.4 lbs (51 kg) each | 59.5 lbs (27 kg) each |
| Woofer Cabinet | ported, rear | ported, rear |
| Spinorama Preference Score | 6.40 | 5.78 |
| Spinorama Preference Score with Perfect Sub | 7.81 | 7.40 |
| DIY Kit | No | No |
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The Two Speakers In Full
Revel F328Be: $19,359.90 per pair Crutchfield eBay
Pros: CEA2034 spinorama shows a quite flat on-axis response with superb directivity and efficiency above 90dB. Predicted in-room response is extremely accurate, with a smooth ~5dB downward slope from bass to treble that suits typical rooms without correction. Early reflections sum very nicely with the direct sound. Horizontal beamwidth of about ±70 degrees is wide and quite smooth. At 96dB SPL/1m distortion stays easily below the reviewer’s audibility threshold across nearly the whole range. Measured bass extension of 74Hz (-3dB), with a measured sensitivity of 91dB.
Cons: Vertical directivity is asymmetric: the reviewer recommends staying between -20 and +40 degrees relative to the tweeter axis, reflecting the driver layout of this three-way tower. Impedance dips to a minimum of 3 ohms with an additional resonance-driven phase swing, calling for an amplifier comfortable with a demanding load. Very expensive and very heavy (51 kg each).
Full Revel F328Be review and specifications →
| Bass Extension (-10dB) | 39Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 74Hz (measured, Audio Science Review) |
| DIY Kit | No |
| Dimensions | 50.9”H x 13.5”W x 17.6”D (1292.9 x 342.9 x 447 mm) |
| Drivers | Three 8” (200mm) Deep Ceramic Composite aluminum cones, with cast frames woofer, 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 nominal (3 ohms minimum, measured by Audio Science Review) |
| Sensitivity | 91dB (measured, Audio Science Review) |
| Spinorama Preference Score | 6.40 |
| Spinorama Preference Score with Perfect Sub | 7.81 |
| Weight | 112.4 lbs (51 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Revel F328Be vs MoFi SourcePoint 888
- Revel F328Be vs Radiant Acoustics Clarity 66
- Revel F328Be vs MoFi SourcePoint V10 Master Edition
- Revel F328Be vs Ascend Acoustics ELX Ribbon Tower
- Revel F328Be vs KEF Blade Two Meta
- Revel F328Be vs GR-Research NX-Treme
- Revel F328Be vs KEF R5 Meta
- Revel F328Be vs Revel F226Be
- See all 39 comparisons
KEF R5: $2,999 per pair Discontinued eBay
Pros: Slim three-way tower with the acoustic advantages of KEF’s coincident Uni-Q midrange/tweeter: horizontal and vertical off-axis responses track the direct sound smoothly, producing stable imaging and a well-behaved directivity index. Erin measured deep low-frequency reach for the cabinet width (77Hz F3 but 33Hz F10) and less than 1% harmonic distortion at 86dB. At 96dB it remains clean when high-passed, and its mild response deviations are suitable for equalization because the radiation pattern stays orderly. Measured bass extension of 77Hz (-3dB), with a measured sensitivity of 86dB.
Cons: The unusual gap between 77Hz F3 and 33Hz F10 indicates a gradual bass contour rather than flat deep-bass output; a subwoofer and roughly 80Hz high-pass are recommended for high-level playback. Erin measured a minimum near 3.5 ohms around 150Hz, although most of the curve remains above 4 ohms, so amplifier quality still matters. Sensitivity is approximately 86dB/2.83V/1m. At 102dB, compression reaches roughly 1dB around 150Hz, showing the limits of the twin 5.25-inch woofers. This original model lacks the Meta version’s MAT rear-wave absorption. Discontinued.
Full KEF R5 review and specifications →
| Bass Extension (-10dB) | 33Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 77Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 40.4”H x 6.9”W x 13.5”D |
| Drivers | 1” aluminum tweeter coaxial with 5” midrange; dual 5.25” woofers |
| Impedance | Approximately 3.5 ohms minimum near 150Hz (measured, Erin’s Audio Corner) |
| Sensitivity | Approximately 86dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.78 |
| Spinorama Preference Score with Perfect Sub | 7.40 |
| Weight | 59.5 lbs (27 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons