Short answer: the HiVi Swans 3.1A Sehlin Sound Solutions mod. It ranks #13 of 47 bookshelf speakers at $346.74; the ELAC DB63 ranks #20 and costs $500, so there is not much of a tradeoff to weigh.
On the ELAC DB63 side: 1” aluminum dome tweeter with a distinctive partial-lens waveguide design paired with a 6.5” third-generation aramid fiber cone woofer. The catch: A dip in the lower midrange (300-600Hz, about 1.5dB) reduces vocal warmth and can make voices sound slightly hollow.
The case for the HiVi Swans 3.1A Sehlin Sound Solutions mod: CEA2034 spinorama shows a mostly smooth on-axis response for a DIY three-way kit. The catch: Some directivity error appears around 2.1kHz on-axis.
Buy the ELAC DB63 if the price matters more than the ranking. Buy the HiVi Swans 3.1A Sehlin Sound Solutions mod if the ranking matters more than the price.
Specifications Side By Side
| ELAC DB63 | HiVi Swans 3.1A Sehlin Sound Solutions mod | |
|---|---|---|
| Price | $500 | $346.74 for the kit (assembly required) |
| Ranked | #20 of 47 in Large Size Bookshelf Speakers | #13 of 47 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 40Hz | 38Hz |
| Bass Extension (-3dB) | 76Hz | 60Hz |
| Dimensions | 13.3"H x 7.7"W x 11.7"D (337.8 x 195.6 x 297.2 mm) | - |
| Impedance | 6 ohms | 4 ohms |
| Sensitivity | 86dB | 87dB |
| Drivers | 6.5" Aramid Fiber woofer, 1" soft dome tweeter | 6.5" Kevlar woofer, 2" Dome midrange, 1" Soft Dome tweeter |
| Weight | 17.2 lbs / 7.8 kg each | 13.7 lbs / 6.2 kg |
| Woofer Cabinet | Rear ported | Rear ported |
The Two Speakers In Full
ELAC DB63: $500 Crutchfield Amazon
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.
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.
| Bass Extension (-10dB) | 40Hz |
|---|---|
| Bass Extension (-3dB) | 76Hz |
| 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 |
| Sensitivity | 86dB |
| Weight | 17.2 lbs / 7.8 kg each |
| Woofer Cabinet | Rear ported |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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HiVi Swans 3.1A Sehlin Sound Solutions mod: $346.74 for the kit (assembly required) Amazon
Pros: CEA2034 spinorama shows a mostly smooth on-axis response for a DIY three-way kit. Horizontal beamwidth of about ±70 degrees is wide and consistent. Distortion stays under control down to 40Hz at 96dB SPL/1m, a strong result for a 6.5” woofer in this class.
Cons: Some directivity error appears around 2.1kHz on-axis. Predicted in-room response needs about 1-2dB of correction to fit an ideal target curve. Vertical directivity is just okay, so listening height matters more than with a coincident design. Minimum impedance dips to 3.8 ohms with several peaks, a moderately demanding load. Requires DIY assembly (kit only), with additional Sehlin-mod parts and labor beyond the base kit price.
| Bass Extension (-10dB) | 38Hz |
|---|---|
| Bass Extension (-3dB) | 60Hz |
| Drivers | 6.5" Kevlar woofer, 2" Dome midrange, 1" Soft Dome tweeter |
| Impedance | 4 ohms |
| Sensitivity | 87dB |
| Weight | 13.7 lbs / 6.2 kg |
| Woofer Cabinet | Rear ported |
- Reviews, Comparisons and Sound Samples
- Links
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC and are subject to change; the price and availability shown on Amazon at the time of purchase will apply to the purchase of this product.