Short answer: the ELAC Debut 2.0 B6.2, because a 19dB suckout is disqualifying for many listeners. The Zu Audio Method is genuinely high-sensitivity, about 90-90.7dB average through the 300Hz-3kHz vocal range, but a severe 1.5-3kHz suckout falls as much as 19dB below the mean at its worst, removing attack and clarity from brass and woodwinds. The B6.2’s own problems, a resonant peak around 700Hz and a 3.3kHz directivity error, are milder.
On the ELAC Debut 2.0 B6.2 side: Reasonably flat on-axis and listening-window response with reasonably even horizontal directivity. Set against that: A good size resonant peak around 700Hz, directivity error around 3.3kHz.
The case for the Zu Audio Method: High-sensitivity design (measured about 90-90.7dB average through the 300Hz-3kHz vocal range). Set against that: A severe suckout in the 1.5-3kHz range (down as much as 19dB below the mean at its worst) removes attack and clarity from brass, woodwinds.
Buy the ELAC Debut 2.0 B6.2. It is rated higher for sound quality than the Zu Audio Method and costs less, so the other one has nothing left to offer.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| ELAC Debut 2.0 B6.2 | Zu Audio Method | |
|---|---|---|
| Price | $329.00 per pair | $700 per pair |
| Ranked | #87 of 130 in Large Size Bookshelf Speakers | #128 of 130 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 40Hz (measured, Erin's Audio Corner) | 56Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 64Hz (measured, Erin's Audio Corner) | 92Hz (measured, Erin's Audio Corner) |
| Impedance | 6 ohms nominal, 5.2 ohms minimum (measured, Erin's Audio Corner) | 8 ohms |
| Sensitivity | 86.5dB (measured, Audio Science Review) | 91dB |
| Drivers | 25mm tweeter + 165mm woofer | 8" coax HE (Eminence/Zu) woofer, Eminence ASD-1001 tweeter |
| Weight | 29.1 lbs (13.2 kg) | 12.1 lbs (5.5 kg) |
| Dimensions | 14.8"H x 7.7"W x 10.6"D (375.0 x 195.0 x 268.0 mm) | 15"H x 8.7"W x 11"D (381.0 x 222.0 x 280.0 mm) |
| Woofer Cabinet | ported, front | ported, front |
| Spinorama Preference Score | 4.75 (spinorama.org) | -0.39 |
| Spinorama Preference Score with Perfect Sub | 7.0 (spinorama.org) | 2.40 |
| DIY Kit | No | No |
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The Two Speakers In Full
ELAC Debut 2.0 B6.2: $329.00 per pair Amazon Crutchfield eBay
Pros: Reasonably flat on-axis and listening-window response with reasonably even horizontal directivity, holding about ±60° up to roughly 8kHz for consistent stereo width whether aimed directly at the listener or toed out. Its larger-than-typical woofer lets it play very loud with minimal distortion, staying under about 1% THD down to 50Hz at 86dB, and minimum impedance stays a comfortable 5-6 ohms. In-room bass extension reaches about 50Hz without much trouble, enough for a solid kick-drum sound. Takes equalization very well - correcting the on-axis response doesn’t cost sensitivity through the midrange, and the underlying directivity behavior (diffraction, vertical mismatch) is mild enough that EQ alone gets most of the way to a well-balanced sound. Vertical tolerance is asymmetric and fairly forgiving: about 10° above the tweeter axis and 20° below it before tonal balance meaningfully shifts. One reviewer called it “a good speaker” with “a good price” rather than just good-for-the-price, and found it fairly neutral overall in-room. Measured bass extension of 64Hz (-3dB), with a measured sensitivity of 86.5dB.
Cons: A good size resonant peak around 700Hz stands out from an otherwise smooth response and lingers in cumulative spectral decay (waterfall) measurements - in one reviewer’s sighted A/B test, reducing it by about 5dB via EQ made a noticeable but not dramatic difference. Directivity error shows up around 3.3kHz, and the upper-midrange around 4-6kHz stood out as edgy and sharp, almost sibilant at times, in casual listening - the predicted in-room response shows a lack of energy between 1-2kHz and a bit too much above that, which one reviewer thought would sound bright. Distortion at 96dB SPL/1m shows two harmonic peaks the reviewer says “should not be there,” one from woofer breakup around 400Hz and another around 7-8kHz from the tweeter, and multitone distortion approaches 10% in the 500-800Hz range at that output level. Real compression shows up even at moderate volume and worsens at 96dB and above, with the woofer clearly giving up around 60-70Hz - a subwoofer is recommended for anyone wanting to listen loud, since running it full-range at high output costs real dynamic range in the midbass and bass. Don’t place it close to a wall - boundary reinforcement adds a midbass bump that undoes the otherwise smooth, linear response. Getting the best out of it takes EQ (taming the 700Hz peak, filling in the 1-2kHz dip, and trimming the highs).
Full ELAC Debut 2.0 B6.2 review and specifications →
| Bass Extension (-10dB) | 40Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 64Hz (measured, Erin's Audio Corner) |
| DIY Kit | No |
| Dimensions | 14.8"H x 7.7"W x 10.6"D (375.0 x 195.0 x 268.0 mm) |
| Drivers | 25mm tweeter + 165mm woofer |
| Impedance | 6 ohms nominal, 5.2 ohms minimum (measured, Erin's Audio Corner) |
| Sensitivity | 86.5dB (measured, Audio Science Review) |
| Spinorama Preference Score | 4.75 (spinorama.org) |
| Spinorama Preference Score with Perfect Sub | 7.0 (spinorama.org) |
| Weight | 29.1 lbs (13.2 kg) |
| Woofer Cabinet | ported, front |
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Zu Audio Method: $700 per pair Zuaudio eBay
Pros: High-sensitivity design (measured about 90-90.7dB average through the 300Hz-3kHz vocal range), making it easy to drive to loud levels with modest amplifier power. Not a difficult electrical load - minimum impedance around 5.8 ohms, compatible with most 8-ohm-rated amplifiers, though Class A/AB amps should have good ventilation given a 3-ohm minimum EPDR. Verified not to be a defective unit: both speakers in the pair measured consistently with each other, and an independent reviewer’s own measurements of the same model matched the findings here. Measured bass extension of 92Hz (-3dB).
Cons: A severe suckout in the 1.5-3kHz range (down as much as 19dB below the mean at its worst) removes attack and clarity from brass, woodwinds, and snares, and gives an overall laid-back, unengaging character. Erratic, inconsistent high-frequency response - alternating between accentuated and subdued at different frequencies - makes cymbals, hi-hats, and sibilant vocal sounds behave unpredictably from track to track. Directivity is poor and inconsistent with frequency, meaning off-axis (sidewall-reflected) energy is actually louder than the direct sound in several bands - a problem that fundamentally cannot be corrected with EQ, since boosting the direct sound would boost the already-too-loud reflections even more. High sensitivity comes at the direct cost of bass extension: F3 of 92Hz and F10 of 56Hz mean essentially no meaningful bass. Despite the high sensitivity, dynamic headroom is poor rather than better as often assumed - distortion in the higher frequencies creates what the reviewer calls an “electronic glare.” Third-order harmonic distortion peaks sharply around 6-7kHz, contributing to an edgy, metallic quality on cymbals and hi-hats, and multitone distortion crosses the reviewer’s 3% threshold. Instantaneous compression testing shows serious dynamic-range issues specifically in the treble (a dip around 2kHz, a peak around 4kHz, and a large dip across 5-7kHz). Vertical radiation has an unusually narrow sweet spot, since the midrange driver beams while the tweeter stays wide, creating a mismatch. Switching to a high-output-impedance amplifier shifts the response by roughly 1-1.5dB in places but doesn’t come close to correcting the fundamental frequency-response problems. Toeing the speakers out reduces some of the on-axis dip’s severity but doesn’t restore a properly immersive soundstage, since off-axis and on-axis response remain too different from each other.
Full Zu Audio Method review and specifications →
| Bass Extension (-10dB) | 56Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 92Hz (measured, Erin's Audio Corner) |
| DIY Kit | No |
| Dimensions | 15"H x 8.7"W x 11"D (381.0 x 222.0 x 280.0 mm) |
| Drivers | 8" coax HE (Eminence/Zu) woofer, Eminence ASD-1001 tweeter |
| Impedance | 8 ohms |
| Sensitivity | 91dB |
| Spinorama Preference Score | -0.39 |
| Spinorama Preference Score with Perfect Sub | 2.40 |
| Weight | 12.1 lbs (5.5 kg) |
| Woofer Cabinet | ported, front |
- Links
- Reviews, Comparisons and Sound Samples
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