Short answer: the ELAC Debut 2.0 B6.2. It ranks #87 of 130 bookshelf speakers by sound quality at $329; the ATC SCM19 ranks #119 and costs $3750, so there is little reason to consider the other one.
What the ELAC Debut 2.0 B6.2 offers: 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. Watch for: 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).
What the ATC SCM19 offers: Harmonic distortion at 96dB SPL/1m stays generally low across the range aside from the spike tied to the 700-800Hz resonance. Sealed (unported) cabinet avoids port noise and resonance, and the extremely dense, heavy-duty enclosure (17.8kg/39lb each) reflects ATC’s pro-audio build standards. Watch for: Some stored energy resonance around 500-700hz, 4dB bump around 700hz. Not recommended for the price. CEA2034 spinorama and predicted in-room response both show a very uneven overall balance - a broad accentuation from midrange to treble paired with too little bass - along with directivity error. At 96dB SPL/1m, harmonic distortion tied to the 500-700Hz resonance rises to a level the reviewer says “should not be there.”
Buy the ELAC Debut 2.0 B6.2. It ranks higher for sound quality than the ATC SCM19 and costs less, so there is no real case for the other one.
The ATC SCM19 is not a sound-quality pick. It sits near the bottom of the 130 bookshelf speakers; there are better options higher up.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| ELAC Debut 2.0 B6.2 | ATC SCM19 | |
|---|---|---|
| Price | $329.00 per pair | $3750 per pair |
| Ranked | #87 of 130 in Large Size Bookshelf Speakers | #119 of 130 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 40Hz (measured, Erin's Audio Corner) | 34Hz (measured, Audio Science Review) |
| Bass Extension (-3dB) | 64Hz (measured, Erin's Audio Corner) | 60Hz (measured, Audio Science Review) |
| Impedance | 6 ohms nominal, 5.2 ohms minimum (measured, Erin's Audio Corner) | 6 ohms |
| Sensitivity | 86.5dB (measured, Audio Science Review) | 85dB (measured, Audio Science Review) |
| Drivers | 25mm tweeter + 165mm woofer | 5.9" Super Linear Magnet cone woofer, 1" soft dome tweeter |
| Weight | 29.1 lbs (13.2 kg) | 39.2 lbs (17.8 kg) each |
| Dimensions | 14.8"H x 7.7"W x 10.6"D (375.0 x 195.0 x 268.0 mm) | 17.2"H x 10.4"W x 11.8"D (436.9 x 264.2 x 299.7 mm) |
| Woofer Cabinet | ported, front | sealed |
| Spinorama Preference Score | - | 3.79 |
| Spinorama Preference Score with Perfect Sub | - | 6.21 |
Related Speaker Comparisons
More worthwhile head-to-heads for ELAC Debut 2.0 B6.2:
- ELAC Debut 2.0 B6.2 vs Perlisten S4b
- ELAC Debut 2.0 B6.2 vs KEF Reference 1 Meta
- ELAC Debut 2.0 B6.2 vs GR-Research NX-Studio
- AsciLab C6B vs ELAC Debut 2.0 B6.2
- ELAC Debut 2.0 B6.2 vs Audio First Cadentia 3
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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) |
| 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) |
| Weight | 29.1 lbs (13.2 kg) |
| Woofer Cabinet | ported, front |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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- ELAC Debut 2.0 B6.2 vs KEF Q3 Meta
- ELAC Debut 2.0 B6.2 vs Polk Monitor XT20
- ELAC Debut 2.0 B6.2 vs Infinity IL10
- ELAC Debut 2.0 B6.2 vs GR-Research X-LS Encore
- ELAC Debut 2.0 B6.2 vs Sonus Faber Lumina II
- ELAC Debut 2.0 B6.2 vs XTZ Spirit 4
- See all 59 comparisons
ATC SCM19: $3750 per pair Tmraudio eBay
Pros: Harmonic distortion at 96dB SPL/1m stays generally low across the range aside from the spike tied to the 700-800Hz resonance. Sealed (unported) cabinet avoids port noise and resonance, and the extremely dense, heavy-duty enclosure (17.8kg/39lb each) reflects ATC’s pro-audio build standards. Measured bass extension of 60Hz (-3dB), with a measured sensitivity of 85dB.
Cons: Some stored energy resonance around 500-700hz, 4dB bump around 700hz. Not recommended for the price. CEA2034 spinorama and predicted in-room response both show a very uneven overall balance - a broad accentuation from midrange to treble paired with too little bass - along with directivity error. At 96dB SPL/1m, harmonic distortion tied to the 500-700Hz resonance rises to a level the reviewer says “should not be there.”
Full ATC SCM19 review and specifications →
| Bass Extension (-10dB) | 34Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 60Hz (measured, Audio Science Review) |
| Dimensions | 17.2"H x 10.4"W x 11.8"D (436.9 x 264.2 x 299.7 mm) |
| Drivers | 5.9" Super Linear Magnet cone woofer, 1" soft dome tweeter |
| Impedance | 6 ohms |
| Sensitivity | 85dB (measured, Audio Science Review) |
| Spinorama Preference Score | 3.79 |
| Spinorama Preference Score with Perfect Sub | 6.21 |
| Weight | 39.2 lbs (17.8 kg) each |
| Woofer Cabinet | sealed |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons