Short answer: the ELAC Uni-Fi 2.0 UB52, unless point-source imaging is the priority, though neither ranks well in its class. Its horizontal directivity holds about ±60 degrees up to 8kHz and stays smooth, with a 3db dip from 1.5-3kHz as the trade-off. The KEF Q100’s Uni-Q coaxial keeps tweeter and woofer point-source aligned for consistent imaging, but its spinorama shows broad deviations: a lift from 700Hz-1.5kHz and again from 5kHz up, plus a cancellation notch around 1.4kHz. Both are rated below 3.0/5 among the 90 bookshelf speakers, so if sound quality matters, consider the Philharmonic Ceramic Mini instead, ranked #2 at $900.
Buy the ELAC Uni-Fi 2.0 UB52, since the KEF Q100 is discontinued and only worth hunting down used.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| ELAC Uni-Fi 2.0 UB52 | KEF Q100 | |
|---|---|---|
| Price | $799.00 per pair | $550 per pair Discontinued |
| Ranked | #70 of 90 in Medium Size Bookshelf Speakers | #71 of 90 in Medium Size Bookshelf Speakers |
| Crossover Frequency | 200Hz / 2000Hz | - |
| Dimensions | 13.6”H x 7.3”W x 10.8”D (346 x 185 x 275 mm) | 11.8”H x 7.1”W x 10.7”D (300 x 180 x 272 mm) |
| Impedance | 6 ohms | 8 ohms nominal |
| Sensitivity | 83.3dB (measured by Audio Science Review; 85dB manufacturer specified) | 85dB (2.83V/1m, measured, Audio Science Review) |
| Drivers | 5.25” aluminum woofer, 4” aluminum midrange, 1” soft dome tweeter | 5.25” Uni-Q aluminum coaxial driver, 1” aluminum dome tweeter |
| Power Handling | 140W max | - |
| Woofer Cabinet | ported | ported, rear |
| Weight | 7.7 lbs (3.5 kg) | 13 lbs (5.9 kg) each |
| Bass Extension (-3dB) | 55.7Hz (measured, Audio Science Review) | 85Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 38.6Hz (measured, Audio Science Review) | 65Hz (measured, Audio Science Review) |
| Spinorama Preference Score | 5.32 (spinorama.org) | 4.96 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.34 (spinorama.org) | 7.24 (spinorama.org) |
| DIY Kit | No | No |
| Frequency Response | - | 49Hz - 40kHz (+/-3dB) (Manufacturer specified) |
Related Speaker Comparisons
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Prices on this page were last checked October 2, 2026 at 10:18 PM 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
ELAC Uni-Fi 2.0 UB52: $799.00 per pair Amazon eBay
Pros: Wide, smooth horizontal directivity: beamwidth holds to about ±60 degrees up to 8kHz before narrowing. Vertical directivity is substantially better than average, giving more listening-height leeway than most two-way bookshelf speakers. Measured bass extension of 55.7Hz (-3dB), with a measured sensitivity of 83.3dB.
Cons: Dipped 3db from 1.5-3kHz. On-axis response shelves down above 1.5kHz along with multiple resonances, leading the reviewer to predict it will “likely sound dull.” Nasty resonance at 600Hz: audible as an actual buzzing artifact on some recordings (the reviewer demonstrated it with an Eva Cassidy track), and it shows up as a sharp distortion spike exceeding 4% at 585Hz when driven to 96dB SPL/1m. Not recommended.
Full ELAC Uni-Fi 2.0 UB52 review and specifications →
| Bass Extension (-10dB) | 38.6Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 55.7Hz (measured, Audio Science Review) |
| Crossover Frequency | 200Hz / 2000Hz |
| DIY Kit | No |
| Dimensions | 13.6”H x 7.3”W x 10.8”D (346 x 185 x 275 mm) |
| Drivers | 5.25” aluminum woofer, 4” aluminum midrange, 1” soft dome tweeter |
| Impedance | 6 ohms |
| Power Handling | 140W max |
| Sensitivity | 83.3dB (measured by Audio Science Review; 85dB manufacturer specified) |
| Spinorama Preference Score | 5.32 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.34 (spinorama.org) |
| Weight | 7.7 lbs (3.5 kg) |
| Woofer Cabinet | ported |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- ELAC Uni-Fi 2.0 UB52 vs JBL Stage A120
- ELAC Uni-Fi 2.0 UB52 vs Q Acoustics 3020i
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- ELAC Uni-Fi 2.0 UB52 vs Micca RB42
- ELAC Uni-Fi 2.0 UB52 vs Q Acoustics 5020
- ELAC Uni-Fi 2.0 UB52 vs Pioneer SP-BS22-LR (Philharmonic AAM Mod)
- ELAC Uni-Fi 2.0 UB52 vs Dynaudio X14
- ELAC Uni-Fi 2.0 UB52 vs JBL Stage A130
- See all 41 comparisons
KEF Q100: $550 per pair Discontinued eBay
Newer model: the KEF Q1 Meta, ranked higher, rated 3.6/5.
Pros: 5.25” Uni-Q coaxial driver keeps the tweeter and woofer point-source aligned for consistent imaging. 86dB sensitivity is reasonably easy to drive. Measured bass extension of 85Hz (-3dB), with a measured sensitivity of 85dB.
Cons: CEA2034 spinorama shows broad, audible deviations from flat rather than narrow peaks: a lift from 700Hz-1.5kHz and again from 5kHz up, plus a cancellation notch around 1.4kHz from port/cabinet interaction. Bass sensitivity drops to about 80dB and impedance falls below 4 ohms in the bass, demanding a capable amplifier. The reviewer heard boomy, buzzing bass that improved somewhat with the port plugged, and could not recommend it, calling the famous reputation more about looks than sound. Discontinued.
Full KEF Q100 review and specifications →
| Bass Extension (-10dB) | 65Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 85Hz (measured, Audio Science Review) |
| DIY Kit | No |
| Dimensions | 11.8”H x 7.1”W x 10.7”D (300 x 180 x 272 mm) |
| Drivers | 5.25” Uni-Q aluminum coaxial driver, 1” aluminum dome tweeter |
| Frequency Response | 49Hz - 40kHz (+/-3dB) (Manufacturer specified) |
| Impedance | 8 ohms nominal |
| Sensitivity | 85dB (2.83V/1m, measured, Audio Science Review) |
| Spinorama Preference Score | 4.96 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.24 (spinorama.org) |
| Weight | 13 lbs (5.9 kg) each |
| Woofer Cabinet | ported, rear |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons