Short answer: the Technics SB-C700 if your amplifier is up to it, otherwise the ELAC Debut 3.0 DB63. The SB-C700’s Phase Precision Driver puts a 1.9cm dome at the exact acoustic center of a 16cm flat-diaphragm carbon-fiber/honeycomb-sandwich woofer for true point-source geometry, but its 85dB sensitivity and 4-ohm nominal impedance want a fairly capable amplifier. The DB63’s known fault is a 1.5dB dip from 300-600Hz that reduces vocal warmth.
Buy the ELAC Debut 3.0 DB63. It is rated higher for sound quality than the Technics SB-C700 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 3.0 DB63 | Technics SB-C700 | |
|---|---|---|
| Price | $499.00 per pair | $1,699.00 per pair |
| Ranked | #42 of 134 in Large Size Bookshelf Speakers | #60 of 134 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 40Hz (measured, Erin’s Audio Corner) | 40.5Hz (measured, spinorama.org) |
| Bass Extension (-3dB) | 76Hz (measured, Erin’s Audio Corner) | 85.0Hz (measured, spinorama.org) |
| Dimensions | 13.3”H x 7.7”W x 11.7”D (337.8 x 195.6 x 297.2 mm) | 8.7” x 13.2” x 11.3” (220 x 336 x 286 mm) each |
| Impedance | 6 ohms nominal (4.4 ohms minimum, measured, Erin’s Audio Corner) | 4 ohms |
| Sensitivity | 86.2dB (measured, Erin’s Audio Corner) | 85dB (2.83V/1m) |
| Drivers | 6.5” Aramid Fiber woofer, 1” soft dome tweeter | Coaxial “Phase Precision Driver”: 1.9cm dome tweeter + 16cm flat-diaphragm woofer |
| Weight | 17.2 lbs (7.8 kg) each | 18.7 lbs (8.5 kg) each |
| Woofer Cabinet | ported, rear | Bass reflex |
| DIY Kit | No | No |
| Spinorama Preference Score | - | 5.11 |
| Spinorama Preference Score with Perfect Sub | - | 7.25 |
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The Two Speakers In Full
ELAC Debut 3.0 DB63: $499.00 per pair Amazon Crutchfield eBay
Pros: 1” aluminum dome tweeter with a distinctive partial-lens waveguide design paired with a 6.5” third-generation aramid fiber cone woofer, in a robustly built cabinet for the price. Shallow bass rolloff (F3 76Hz, F10 40Hz) allows placement close to a wall without excessive boominess, useful for smaller living rooms. Solid measured performance for the price: on-axis linearity within about 2.5dB, impedance dipping only to about 4.4 ohms (easily AVR-driven), and roughly 20-26dB of usable dynamic range. A clear improvement over its sibling ELAC DB62, which has a sibilance issue tied to the crossover that can’t be fixed with EQ. Wide horizontal radiation of about ±60°, giving a spacious soundstage. Distortion looks good at a moderate 86dB and still reasonable at 96dB. Takes well to EQ correction: the reviewer provides a specific filter set (a low-shelf boost at 650Hz plus peaking cuts/boosts at 550Hz, 660Hz, and 3kHz) that meaningfully smooths out its known deviations. Measured bass extension of 76Hz (-3dB), with a measured sensitivity of 86.2dB.
Cons: A dip in the lower midrange (300-600Hz, about 1.5dB) reduces vocal warmth and can make voices sound slightly hollow. A high-Q resonance around 650-750Hz shows up clearly in measurements, though the reviewer couldn’t reliably hear it in his own A/B testing. A dip around 2-3kHz (roughly 1-2dB) slightly reduces speech intelligibility and attack in the upper midrange. Directivity droops above about 2kHz as the midwoofer narrows toward its beaming frequency while the tweeter’s pattern behaves differently: an inherent trade-off of physically separated drivers that can’t be fully corrected without introducing other issues. Multitone distortion crosses the reviewer’s 3% threshold in the 200Hz-1kHz range, and adding a subwoofer at an 80Hz crossover only modestly reduces it. Toeing the speaker away from the listener loses noticeable top-end air and cymbal energy, giving a softer upper register. Practical loudness ceiling is around 90dB at typical listening distance before midrange distortion and bass attack begin to degrade. Still needs a subwoofer for extension below about 40Hz.
Full ELAC Debut 3.0 DB63 review and specifications →
| Bass Extension (-10dB) | 40Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 76Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 13.3”H x 7.7”W x 11.7”D (337.8 x 195.6 x 297.2 mm) |
| Drivers | 6.5” Aramid Fiber woofer, 1” soft dome tweeter |
| Impedance | 6 ohms nominal (4.4 ohms minimum, measured, Erin’s Audio Corner) |
| Sensitivity | 86.2dB (measured, Erin’s Audio Corner) |
| Weight | 17.2 lbs (7.8 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
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Technics SB-C700: $1,699.00 per pair Value Electronics USA Tube Audio eBay
Pros: Distinctive coincident “Phase Precision Driver”: a 1.9cm dome tweeter mounted at the exact acoustic center of a 16cm flat-diaphragm carbon-fiber/honeycomb-sandwich woofer, giving true point-source geometry. Directivity is unusually symmetric front-to-back and top-to-bottom (both horizontal and vertical average exactly 60°) and off axis sound tracks the on axis response unusually consistently for a large bookshelf speaker. Die-cast aluminum chassis and a high-gloss convex “Entasis form” cabinet with side panels up to 42mm thick for extra rigidity. Measured bass extension of 85.0Hz (-3dB).
Cons: 85dB sensitivity paired with a 4-ohm nominal impedance wants a fairly capable amplifier. Bass extension is shallow relative to its 6.5”-class woofer at -3dB (85.0Hz), though it reaches a more usable 40.5Hz at -10dB: a fairly steep low-end rolloff shape once past the reference band. At $1699/pair, some in the ASR community have questioned the value proposition against similarly-measuring alternatives at lower prices.
Full Technics SB-C700 review and specifications →
| Bass Extension (-10dB) | 40.5Hz (measured, spinorama.org) |
|---|---|
| Bass Extension (-3dB) | 85.0Hz (measured, spinorama.org) |
| DIY Kit | No |
| Dimensions | 8.7” x 13.2” x 11.3” (220 x 336 x 286 mm) each |
| Drivers | Coaxial “Phase Precision Driver”: 1.9cm dome tweeter + 16cm flat-diaphragm woofer |
| Impedance | 4 ohms |
| Sensitivity | 85dB (2.83V/1m) |
| Spinorama Preference Score | 5.11 |
| Spinorama Preference Score with Perfect Sub | 7.25 |
| Weight | 18.7 lbs (8.5 kg) each |
| Woofer Cabinet | Bass reflex |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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