Short answer: the ELAC Uni-Fi 2.0 UB52 for dispersion, the Debut 2.0 B5.2 for EQ friendliness. The UB52 holds wide, smooth horizontal directivity, with beamwidth to about ±60 degrees up to 8kHz before narrowing, at the cost of a 3dB dip from 1.5-3kHz. The B5.2’s off-axis curves track its on-axis response closely, so its own broad +3dB step from around 1.5kHz responds predictably to EQ.
Buy the ELAC Debut 2.0 B5.2. It is rated higher for sound quality than the ELAC Uni-Fi 2.0 UB52 and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| ELAC Debut 2.0 B5.2 | ELAC Uni-Fi 2.0 UB52 | |
|---|---|---|
| Price | $269.00 per pair | $799.00 per pair |
| Ranked | #49 of 92 in Medium Size Bookshelf Speakers | #71 of 92 in Medium Size Bookshelf Speakers |
| Bass Extension (-10dB) | 40Hz (measured, Erin’s Audio Corner) | 38.6Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 60Hz (measured, Erin’s Audio Corner) | 55.7Hz (measured, Audio Science Review) |
| Dimensions | 13.4”H x 7.1”W x 9.2”D (341 x 180 x 234 mm) | 13.6”H x 7.3”W x 10.8”D (346 x 185 x 275 mm) |
| Impedance | 6 ohms nominal (manufacturer specified) | 6 ohms |
| Sensitivity | About 83dB after recommended EQ (measured, Erin’s Audio Corner; 86dB manufacturer specified) | 83.3dB (measured by Audio Science Review; 85dB manufacturer specified) |
| Drivers | 5.25” aramid-fiber woofer, 1” cloth-dome tweeter | 5.25” aluminum woofer, 4” aluminum midrange, 1” soft dome tweeter |
| Weight | 13 lbs (5.9 kg) each | 7.7 lbs (3.5 kg) |
| Woofer Cabinet | ported, front | ported |
| Spinorama Preference Score | 5.02 | 5.32 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.27 | 7.34 (spinorama.org) |
| DIY Kit | No | No |
| Crossover Frequency | - | 200Hz / 2000Hz |
| Power Handling | - | 140W max |
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How ELAC Debut 2.0 B5.2 compares with other leading options:
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- KEF LS50 Meta vs ELAC Debut 2.0 B5.2
- XMechanik Mechano23 DIY vs ELAC Debut 2.0 B5.2
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The Two Speakers In Full
ELAC Debut 2.0 B5.2: $269.00 per pair Amazon eBay
Pros: Good horizontal directivity: the off-axis curves track the on-axis response closely, so the broad tonal error responds predictably to EQ. Erin demonstrated that a single high-shelf filter centered near 1.6kHz, about -2dB with Q near 2, substantially improves linearity. Moderate roughly +/-50-60 degree horizontal coverage balances room interaction and image focus. The front port makes close-to-wall placement practical. Erin measured F3 near 60Hz and F10 near 40Hz, useful extension for a compact 5.25-inch two-way. Harmonic distortion is mostly below 1% at 86dB/1m, and low-frequency distortion is better than its size might suggest. Compact cabinet and inexpensive pair pricing make it a workable EQ-assisted desktop or small-room system. Measured bass extension of 60Hz (-3dB), with a measured sensitivity of 83dB.
Cons: Erin measured a broad +3dB step beginning around 1.5kHz; the resulting elevated upper range sounds tonally uneven even though it is not a narrow, sharp resonance. Native response spans roughly -2.6 to +4dB around the mean, so this is not a neutral speaker without correction. Sensitivity is only about 83dB after correcting the shelf, demanding materially more amplifier voltage than ELAC’s 86dB specification implies. Vertical response changes substantially outside roughly +/-10 degrees of tweeter height. Dynamic compression is the larger limitation: at the highest sweep level it loses roughly 1-1.5dB through the midrange, and even the 86dB trace shows unusual nonlinearity that may involve crossover heating. At about 96dB, multitone distortion rises audibly around 600Hz; an 80-120Hz subwoofer crossover helps but does not turn it into a high-output design. Erin recommends the larger B6.2 instead when EQ is unavailable.
Full ELAC Debut 2.0 B5.2 review and specifications →
| Bass Extension (-10dB) | 40Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 60Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 13.4”H x 7.1”W x 9.2”D (341 x 180 x 234 mm) |
| Drivers | 5.25” aramid-fiber woofer, 1” cloth-dome tweeter |
| Impedance | 6 ohms nominal (manufacturer specified) |
| Sensitivity | About 83dB after recommended EQ (measured, Erin’s Audio Corner; 86dB manufacturer specified) |
| Spinorama Preference Score | 5.02 |
| Spinorama Preference Score with Perfect Sub | 7.27 |
| Weight | 13 lbs (5.9 kg) each |
| Woofer Cabinet | ported, front |
- Links
- Reviews, Comparisons and Sound Samples
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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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