Short answer: the ELAC Uni-Fi Reference UBR62 for better sound quality, the Polk Monitor XT20 for the lower price. The ELAC Uni-Fi Reference UBR62 ranks #64 of 203 bookshelf speakers, rated 4.1/5, at $1,299. The Polk Monitor XT20 ranks #143, rated 3.4/5, at $179.99, $1,119.01 cheaper.
Why pick the Polk Monitor XT20: Two-way bookshelf design with a 1” tweeter and 6.5” woofer, part of Polk’s budget-friendly XT lineup (spanning roughly $200-700 across the series). The tradeoff: Notably bright treble, elevated roughly 1-5dB above the midrange depending on frequency: a characteristic shared across the whole Polk XT lineup, requiring either EQ or toe-out to tame.
The ELAC Uni-Fi Reference UBR62 is the more accurate pick. True three-way stand-mount using a 1-inch tweeter concentrically mounted in a 4-inch aluminum midrange plus a dedicated 6.5-inch aluminum woofer. Its measured preference score, a predictor of how neutral it sounds, is 5.44 against 4.71 for the Polk Monitor XT20. Watch for: Erin measured very low 83dB/2.83V/1m sensitivity; his 110W Parasound was insufficient for the high-level test and the more powerful HINT 6 was needed.
Buy the Polk Monitor XT20 if the price matters more than sound quality. Buy the ELAC Uni-Fi Reference UBR62 if sound quality matters more than the price.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| Polk Monitor XT20 | ELAC Uni-Fi Reference UBR62 | |
|---|---|---|
| Price | $179.99 per pair | $1,299.00 per pair |
| Ranked | #143 of 203 in Large Size Bookshelf Speakers | #64 of 203 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 43.4Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) | 41.9Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 64.5Hz (measured, Erin’s Audio Corner) | 58.6Hz (measured, Erin’s Audio Corner) |
| Dimensions | 13”H x 7.5”W x 11”D (330.2 x 190.5 x 279.4 mm) | 14.1”H x 8.2”W x 13.1”D |
| Impedance | 8 ohms nominal (measured, Erin’s Audio Corner) | 4 ohms minimum near 50Hz (measured, Erin’s Audio Corner) |
| Sensitivity | 86dB (measured by Erin’s Audio Corner; 87dB manufacturer specified) | 83dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Drivers | 6.5” bilaminate paper cone woofer, 1” Terylene dome tweeter | 1” tweeter coaxial with 4” midrange; 6.5” woofer |
| Weight | 11.9 lbs (5.4 kg) each | 23.5 lbs (10.68 kg) each |
| Woofer Cabinet | ported | ported, dual front slot vents |
| Spinorama Preference Score | 4.71 | 5.44 (measured, spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.07 | 7.7 (measured, spinorama.org) |
| DIY Kit | No | No |
| Bass Extension | - | 41Hz manufacturer specified; Erin’s response-linearity graph shows limited high-output bass headroom |
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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.
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The Two Speakers In Full
Polk Monitor XT20: $179.99 per pair Amazon Crutchfield eBay
Older model: the Polk Audio Monitor 40 Series II (rated 3.2/5).
Same family: the Polk Audio XT15 (smaller bookshelf, rated 3.7/5), the Polk Audio XT60 (smaller floorstanding, rated 3.5/5), the Polk Audio XT70 (larger floorstanding, rated 3.6/5), the Polk Audio XT30 (smaller center, rated 3.6/5), the Polk Audio XT35 (larger center, rated 4.1/5), the Polk Audio Monitor XT10 (smaller subwoofer, estimated 3.1/5) and the Polk Audio Monitor XT12 (larger subwoofer, estimated 3.3/5).
Pros: Two-way bookshelf design with a 1” tweeter and 6.5” woofer, part of Polk’s budget-friendly XT lineup (spanning roughly $200-700 across the series). Measures more linear and has fewer/smaller cabinet resonances than its smaller sibling, the Polk Audio XT15, making it (by the reviewer’s own assessment) probably the better of the two based on data alone. Reasonably good bass output for the price and size, with an F3 of 63Hz. Horizontal radiation of about ±50° gives a respectable, enjoyable soundstage width. Takes well to EQ correction: the early-reflections directivity trend is decently linear, meaning tonal adjustments can meaningfully improve the sound. Provides usable, respectable volume when paired with a subwoofer crossover, even though it isn’t intended to play extremely loud on its own. Measured bass extension of 64.5Hz (-3dB), with a measured sensitivity of 86dB.
Cons: Notably bright treble, elevated roughly 1-5dB above the midrange depending on frequency: a characteristic shared across the whole Polk XT lineup, requiring either EQ or toe-out to tame. Small resonances appear around 300Hz and 800Hz, with some of that energy leaking from the port area. Vertical listening window is narrow: best kept close to the tweeter axis, with only a couple of degrees of tolerance above or below before the sound changes. Still needs a subwoofer for real low-end extension despite the decent F3. Overall linearity isn’t state-of-the-art flat, and while the reviewer found it pleasant, some artificial brightness remains even after basic EQ correction in the crossover region.
Full Polk Monitor XT20 review and specifications →
| Bass Extension (-10dB) | 43.4Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
|---|---|
| Bass Extension (-3dB) | 64.5Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 13”H x 7.5”W x 11”D (330.2 x 190.5 x 279.4 mm) |
| Drivers | 6.5” bilaminate paper cone woofer, 1” Terylene dome tweeter |
| Impedance | 8 ohms nominal (measured, Erin’s Audio Corner) |
| Sensitivity | 86dB (measured by Erin’s Audio Corner; 87dB manufacturer specified) |
| Spinorama Preference Score | 4.71 |
| Spinorama Preference Score with Perfect Sub | 7.07 |
| Weight | 11.9 lbs (5.4 kg) each |
| Woofer Cabinet | ported |
- Links
- Reviews, Comparisons and Sound Samples
- Erin’s Audio Corner: Polk’s new budget XT Speakers. Reviewed! More from Erin’s Audio Corner →
- Erin’s Audio Corner Website Polk Monitor XT20
- Erin’s Audio Corner: 10 Great (and Terrible) Speakers Under $300!
- Erin’s Audio Corner: Budget Stereo Systems You Will Love
- Erin’s Audio Corner Measurements (spinorama.org)
- Head-to-Head Comparisons
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ELAC Uni-Fi Reference UBR62: $1,299.00 per pair Amazon eBay
Same family: the ELAC Uni-Fi Reference UFR52 (floorstanding, estimated 4.3/5) and the ELAC Uni-Fi Reference UCR52 (center, rated 3.3/5).
Pros: True three-way stand-mount using a 1-inch tweeter concentrically mounted in a 4-inch aluminum midrange plus a dedicated 6.5-inch aluminum woofer. Erin found the directivity and overall tonality well controlled, with dual front slot vents minimizing placement sensitivity and cabinet bracing suppressing obvious coloration. The mostly 5-ohm-or-higher load is manageable for a genuinely 4-ohm-capable amplifier, and the coherent concentric upper range supports stable imaging across seats. Measured bass extension of 58.6Hz (-3dB), with a measured sensitivity of 83dB.
Cons: Erin measured very low 83dB/2.83V/1m sensitivity; his 110W Parasound was insufficient for the high-level test and the more powerful HINT 6 was needed. Impedance reaches 4 ohms near 50Hz (Erin), while woofer excursion and bass output were less capable than expected for the cabinet size. A broad 500-700Hz rise and associated lower/female-vocal coloration were audible, and the slightly subdued listening-window treble is necessary to avoid an overly bright in-room balance rather than evidence of ruler-flat axial tuning.
Full ELAC Uni-Fi Reference UBR62 review and specifications →
| Bass Extension | 41Hz manufacturer specified; Erin’s response-linearity graph shows limited high-output bass headroom |
|---|---|
| Bass Extension (-10dB) | 41.9Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 58.6Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 14.1”H x 8.2”W x 13.1”D |
| Drivers | 1” tweeter coaxial with 4” midrange; 6.5” woofer |
| Impedance | 4 ohms minimum near 50Hz (measured, Erin’s Audio Corner) |
| Sensitivity | 83dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.44 (measured, spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.7 (measured, spinorama.org) |
| Weight | 23.5 lbs (10.68 kg) each |
| Woofer Cabinet | ported, dual front slot vents |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- ELAC Uni-Fi Reference UBR62 vs Power Sound Audio MT-110-M
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- ELAC Uni-Fi Reference UBR62 vs Yamaha NS-800A
- ELAC Uni-Fi Reference UBR62 vs ELAC Debut 3.0 DB63
- ELAC Uni-Fi Reference UBR62 vs Definitive Technology Demand D11
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