Short answer: the Polk Reserve R500, if you are buying new. The KEF R5 ranks higher than it (#40 vs #74 of 188 floorstanding speakers, 4.4/5 vs 4.2/5) but is discontinued, so only consider it used; the Polk Reserve R500 is still sold new at $1,118.
What the KEF R5 does well: 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. The tradeoff: 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.
The Polk Reserve R500 is the deeper-bass choice. Dual 5.25” midwoofers paired with a ring radiator tweeter in a floorstanding tower design. Its bass reaches about 51Hz before falling 3dB, against 77Hz for the KEF R5. Watch for: A bump around 4-6kHz gives a “shouty,” mildly sibilant quality in the lower treble.
Buy the Polk Reserve R500 if you want one new; the KEF R5 is discontinued, so only look for it used.
Still deciding? The full Passive Home rankings cover every ranked option.
Specifications Side By Side
| KEF R5 | Polk Reserve R500 | |
|---|---|---|
| Price | $2,999 per pair Discontinued | $1,118 per pair |
| Ranked | #40 of 188 in Large Size Floorstanding Speakers | #74 of 188 in Large Size Floorstanding Speakers |
| Bass Extension (-3dB) | 77Hz (measured, Erin’s Audio Corner) | 51Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 33Hz (measured, Erin’s Audio Corner) | 33Hz (measured, Erin’s Audio Corner) |
| Sensitivity | Approximately 86dB/2.83V/1m (measured, Erin’s Audio Corner) | 86.2dB (measured, Erin’s Audio Corner) |
| Impedance | Approximately 3.5 ohms minimum near 150Hz (measured, Erin’s Audio Corner) | 4.1 ohms minimum above 80Hz (measured, Erin’s Audio Corner; 8 ohms nominal per manufacturer) |
| Drivers | 1” aluminum tweeter coaxial with 5” midrange; dual 5.25” woofers | Two 5.25” Turbine Cone woofer, 1” Pinnacle Ring Radiator tweeter |
| Dimensions | 40.4”H x 6.9”W x 13.5”D | 40.3”H x 6.8”W x 12.4”D (1023.6 x 172.7 x 315 mm) |
| Weight | 59.5 lbs (27 kg) each | 39.2 lbs (17.8 kg) each |
| Woofer Cabinet | ported, rear | ported, rear |
| Spinorama Preference Score | 5.78 | 5.86 |
| Spinorama Preference Score with Perfect Sub | 7.40 | 7.44 |
| DIY Kit | No | No |
Related Speaker Comparisons
More worthwhile head-to-heads for KEF R5:
- KEF Blade Two Meta vs KEF R5
- MoFi SourcePoint 888 vs KEF R5
- Revel F328Be vs KEF R5
- KEF R5 Meta vs KEF R5
- Revel F226Be vs KEF R5
Prices on this page were last checked October 9, 2026 at 8:01 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.
As an eBay Partner, we may be compensated if you make a purchase.
The Two Speakers In Full
KEF R5: $2,999 per pair Discontinued eBay
Same family: the KEF R3 (bookshelf, rated 4.5/5), the KEF R7 (larger floorstanding, ranked lower, estimated 4.2/5), the KEF R11 (larger floorstanding, ranked lower, estimated 4.3/5) and the KEF R2c (center, rated 4/5).
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
Polk Reserve R500: $1,118 per pair Amazon eBay
Same family: the Polk Reserve R100 (smaller bookshelf, rated 3.4/5), the Polk R200 (larger bookshelf, rated 3.2/5), the Polk Reserve R600 (larger floorstanding, ranked lower, estimated 4.2/5), the Polk Audio Reserve R700 (larger floorstanding, ranked higher, rated 4.3/5), the Polk Audio Reserve R300 (smallest center, estimated 3.6/5), the Polk Audio Reserve R350 (center, rated 3.7/5) and the Polk Audio Reserve R400 (largest center, estimated 3.8/5).
Pros: Dual 5.25” midwoofers paired with a ring radiator tweeter in a floorstanding tower design. Surprisingly neutral overall compared to Polk’s smaller bookshelf models: notably more even-handed than the brighter-sounding Polk R200 the reviewer tested previously. Good linearity on-axis, within about -3/+2dB. Sensitivity close to 86dB, easily driven to adequate levels in a small-to-medium room with a 100W-capable amplifier. Takes very well to EQ: a single band of correction (about a 2dB cut around 4-5kHz) resolves the main tonal issue and transforms the sound. Dynamic range and compression performance is solidly “medium,” holding up fine through about 20dB of level increase before higher-frequency and bass output start to taper at extreme volumes. Measured bass extension of 51Hz (-3dB), with a measured sensitivity of 86.2dB.
Cons: A bump around 4-6kHz gives a “shouty,” mildly sibilant quality in the lower treble. Counterintuitively, toeing the speaker out to reduce brightness makes this worse rather than better, since the ring-radiator tweeter’s directivity narrows rapidly above about 6-7kHz: pointed on-axis retains enough top-end air to balance the bump, but toed away that air drops off and the shoutiness stands out more. Bass is adequate for its 5.25” woofers but lacks real weight below about 40-50Hz; a subwoofer is still needed for movies and bass-heavy music. A cabinet resonance around 160-170Hz subtracts from rather than adds boom to the mid-bass region. Vertical listening window is fairly narrow: sitting more than about 10-20° above or below the tweeter axis causes a suckout in the 2-5kHz range, reducing clarity and attack. Multitone distortion ramps up noticeably around 1kHz, and crossing over to a subwoofer at 80Hz doesn’t meaningfully reduce it: likely a surround-related effect rather than excursion-related. Without applying corrective EQ, the reviewer says the 4-6kHz brightness would make it harder to live with day to day.
Full Polk Reserve R500 review and specifications →
| Bass Extension (-10dB) | 33Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 51Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 40.3”H x 6.8”W x 12.4”D (1023.6 x 172.7 x 315 mm) |
| Drivers | Two 5.25” Turbine Cone woofer, 1” Pinnacle Ring Radiator tweeter |
| Impedance | 4.1 ohms minimum above 80Hz (measured, Erin’s Audio Corner; 8 ohms nominal per manufacturer) |
| Sensitivity | 86.2dB (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.86 |
| Spinorama Preference Score with Perfect Sub | 7.44 |
| Weight | 39.2 lbs (17.8 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Polk Reserve R500 vs ELAC Debut 3.0 DF63
- Polk Reserve R500 vs Linkwitz Lab LXmini
- Polk Reserve R500 vs Emotiva Airmotiv T2+
- Polk Reserve R500 vs Infinity Primus 360
- Polk Reserve R500 vs PSB Imagine T65
- Polk Reserve R500 vs Polk Audio Reserve R700
- Polk Reserve R500 vs JBL HDI-3600
- Polk Reserve R500 vs JBL Studio 698
- See all 34 comparisons