Short answer: the ELAC Uni-Fi 2.0 UB52, with the Fluance Signature HFS the more flexible installation piece, though neither ranks well in its class. The UB52’s horizontal directivity stays wide and smooth, holding to about ±60 degrees up to 8kHz, and its main flaw is a 3db dip from 1.5-3kHz. The Fluance adds a front-facing port and pre-installed wall brackets for bookshelf or surround/height duty, but its spinorama shows serious midrange flaws in both direct sound and directivity. Both are rated below 3.0/5 among the 90 bookshelf speakers; for better sound, the Philharmonic Ceramic Mini ranks #2 at $900.
Buy the ELAC Uni-Fi 2.0 UB52 when sound quality outweighs the price for you, and the Fluance Signature HFS when the price outweighs sound quality instead.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| ELAC Uni-Fi 2.0 UB52 | Fluance Signature HFS | |
|---|---|---|
| Price | $799.00 per pair | $199.99 per pair |
| Ranked | #70 of 90 in Medium Size Bookshelf Speakers | #79 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) | 12.8H x 7.87W x 8.22D in |
| Impedance | 6 ohms | 8 ohms |
| Sensitivity | 83.3dB (measured by Audio Science Review; 85dB manufacturer specified) | 86dB (2.83V/1m, measured, Audio Science Review) |
| Drivers | 5.25” aluminum woofer, 4” aluminum midrange, 1” soft dome tweeter | 1” neodymium silk dome tweeter (ferrofluid cooled), 5” glass-fiber-treated woofer (butyl rubber surround) |
| Power Handling | 140W max | 30-120W recommended |
| Woofer Cabinet | ported | ported, front |
| Weight | 7.7 lbs (3.5 kg) | 9.7 lbs (4.4 kg) each |
| Bass Extension (-3dB) | 55.7Hz (measured, Audio Science Review) | 78Hz (measured, Audio Science Review) |
| Bass Extension (-10dB) | 38.6Hz (measured, Audio Science Review) | 60Hz (measured, Audio Science Review) |
| Spinorama Preference Score | 5.32 (spinorama.org) | 2.92 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.34 (spinorama.org) | 5.53 (spinorama.org) |
| DIY Kit | No | No |
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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 KEF Q100
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- ELAC Uni-Fi 2.0 UB52 vs JBL L52 Classic
- 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
- See all 41 comparisons
Fluance Signature HFS: $199.99 per pair Amazon eBay
Pros: Front-facing port and pre-installed wall-mount brackets make it flexible for bookshelf or surround/height duty. Distortion in the low end is well controlled per the measurements, and the glossy front baffle adds a touch of style well beyond the budget price. Measured bass extension of 78Hz (-3dB), with a measured sensitivity of 86dB.
Cons: CEA2034 spinorama shows serious flaws in the midrange: both the direct sound and the directivity are compromised, a combination the reviewer flagged as poor for controlled listening tests. Multiple attempted EQ fixes “could not rescue” the sound, and the reviewer said the result was “close” to the lowest possible rating. Online reviews seeded by the company were positive; the reviewer’s measured and subjective experience was not.
Full Fluance Signature HFS review and specifications →
| Bass Extension (-10dB) | 60Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 78Hz (measured, Audio Science Review) |
| DIY Kit | No |
| Dimensions | 12.8H x 7.87W x 8.22D in |
| Drivers | 1” neodymium silk dome tweeter (ferrofluid cooled), 5” glass-fiber-treated woofer (butyl rubber surround) |
| Impedance | 8 ohms |
| Power Handling | 30-120W recommended |
| Sensitivity | 86dB (2.83V/1m, measured, Audio Science Review) |
| Spinorama Preference Score | 2.92 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 5.53 (spinorama.org) |
| Weight | 9.7 lbs (4.4 kg) each |
| Woofer Cabinet | ported, front |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Fluance Signature HFS vs JBL Control 1 Pro
- Fluance Signature HFS vs JBL Stage A130
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- Fluance Signature HFS vs Definitive Technology ProMonitor 1000
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- Fluance Signature HFS vs Micca RB42
- Fluance Signature HFS vs Pioneer Elite SP-EBS73-LR
- Fluance Signature HFS vs Q Acoustics 3020i
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