Short answer: the MoFi SourcePoint 10 for measured directivity, the HiVi Swans kit for cost. The MoFi’s Andrew Jones-designed concentric driver delivers best-in-class sound power and early-reflections directivity, though like virtually all coincident designs it sounds notably bright pointed directly on-axis. The HiVi Swans 3.1A mod’s CEA2034 spinorama is mostly smooth for a DIY three-way kit, with some directivity error around 2.1kHz, and it costs $3430.01 less.
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. Set against that: Some directivity error appears around 2.1kHz on-axis.
What the MoFi SourcePoint 10 gets right: Andrew Jones-designed concentric/coincident driver delivers best-in-class sound power and early-reflections directivity in the reviewer’s. The catch: Like virtually all coincident designs, sounds notably bright pointed directly on-axis due to a deliberate treble lift (meant to compensate.
Buy the HiVi Swans 3.1A Sehlin Sound Solutions mod if the price is the priority over sound quality, or the MoFi SourcePoint 10 if sound quality is the priority over the price.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| HiVi Swans 3.1A Sehlin Sound Solutions mod | MoFi SourcePoint 10 | |
|---|---|---|
| Price | $364.99 per pair for the kit (assembly required) | $3795 per pair |
| Ranked | #61 of 130 in Large Size Bookshelf Speakers | #26 of 130 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 38Hz (measured, Audio Science Review) | 38Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | 60Hz (measured, Audio Science Review) | 56Hz (measured, Erin's Audio Corner) |
| Impedance | 4 ohms nominal, 3.8 ohms minimum (measured, Audio Science Review) | 8 ohms nominal, 6.4 ohms minimum (measured, Erin's Audio Corner) |
| Drivers | 6.5" Kevlar woofer, 2" Dome midrange, 1" Soft Dome tweeter | 10" Paper-pulp Cone woofer, 1.25-inch soft-dome tweeter |
| Sensitivity | 86.5dB (measured, Audio Science Review) | 88.2dB (measured, Erin's Audio Corner) |
| Woofer Cabinet | ported, rear | ported, rear |
| Weight | 13.7 lbs (6.2 kg) | 46.3 lbs (21.0 kg) each |
| Dimensions | 16.5"H x 8.5"W x 13"D (420.0 x 215.0 x 330.0 mm) | 22.5"H x 14.5"W x 16.6"D (571.5 x 368.3 x 421.6 mm) |
| Spinorama Preference Score | 5.8 (derived from ASR thread measurement data) | 3.25 |
| Spinorama Preference Score with Perfect Sub | 7.6 (derived from ASR thread measurement data) | 5.27 |
| DIY Kit | Yes | No |
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The Two Speakers In Full
HiVi Swans 3.1A Sehlin Sound Solutions mod: $364.99 per pair for the kit (assembly required) Amazon eBay
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. Measured bass extension of 60Hz (-3dB), with a measured sensitivity of 86.5dB.
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.
Full HiVi Swans 3.1A Sehlin Sound Solutions mod review and specifications →
| Bass Extension (-10dB) | 38Hz (measured, Audio Science Review) |
|---|---|
| Bass Extension (-3dB) | 60Hz (measured, Audio Science Review) |
| DIY Kit | Yes |
| Dimensions | 16.5"H x 8.5"W x 13"D (420.0 x 215.0 x 330.0 mm) |
| Drivers | 6.5" Kevlar woofer, 2" Dome midrange, 1" Soft Dome tweeter |
| Impedance | 4 ohms nominal, 3.8 ohms minimum (measured, Audio Science Review) |
| Sensitivity | 86.5dB (measured, Audio Science Review) |
| Spinorama Preference Score | 5.8 (derived from ASR thread measurement data) |
| Spinorama Preference Score with Perfect Sub | 7.6 (derived from ASR thread measurement data) |
| Weight | 13.7 lbs (6.2 kg) |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- HiVi Swans 3.1A Sehlin Sound Solutions mod vs Klipsch RP-600M II
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- HiVi Swans 3.1A Sehlin Sound Solutions mod vs GR-Research X-LS Encore
- HiVi Swans 3.1A Sehlin Sound Solutions mod vs ELAC Debut 2.0 B6.2
- HiVi Swans 3.1A Sehlin Sound Solutions mod vs Polk Monitor XT20
- HiVi Swans 3.1A Sehlin Sound Solutions mod vs KEF Q Concerto Meta
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MoFi SourcePoint 10: $3795 per pair Crutchfield eBay
Pros: Andrew Jones-designed concentric/coincident driver delivers best-in-class sound power and early-reflections directivity in the reviewer’s testing - a genuine “point source” design. Vertical and horizontal radiation patterns closely match each other (about ±50° horizontal, ±30-40° vertical), a hallmark benefit of a well-executed concentric driver. Distortion stays low - under 1% above 100Hz at 86dB, and under 3% up to 100Hz even at 96dB, better than the reviewer expected from a low-excursion waveguide-loaded woofer. Surprisingly strong dynamic capability with little audible compression at both low and high volume. Widely spaced (about 11 feet apart) with roughly 15° of toe-out produced a huge, expansive soundstage without significant loss of imaging precision. Solidly built cabinet (about 40 lbs, heavily braced) minimizes cabinet resonance. Measured bass extension of 56Hz (-3dB), with a measured sensitivity of 88.2dB.
Cons: Like virtually all coincident designs, sounds notably bright pointed directly on-axis due to a deliberate treble lift (meant to compensate for the 28mm tweeter’s earlier beaming versus a typical 25mm/1” tweeter) combined with a diffraction dip/peak from the waveguide edge; needs about 15° of toe-out to sound neutral, and even then benefits from an extra 1-2dB of treble EQ. Toeing out further (to 30°) flattens the treble further but introduces a dip in the midrange-to-tweeter crossover region - there’s no single toe-out angle that fixes everything at once. F3 of 56Hz and F10 of 38Hz (about 40Hz in-room) mean genuine deep bass is limited; the reviewer would pair it with a sealed 10” or 12” subwoofer for regular daily listening. Bass extension and cabinet placement trade off against midrange cleanliness: placing it close to a wall for more bass risks a wall-bounce suckout in the midrange (roughly 200-500Hz depending on distance). Not perfectly time-aligned between tweeter and woofer (about 0.4ms delta), an inherent limitation of passive coincident drivers versus actively time-corrected designs. Some resonances appear in measurements, likely port-related. Minimum impedance around 6.4 ohms with EPDR near 3 ohms, so the reviewer recommends sticking with a 4-ohm-rated amplifier to be safe.
Full MoFi SourcePoint 10 review and specifications →
| Bass Extension (-10dB) | 38Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 56Hz (measured, Erin's Audio Corner) |
| DIY Kit | No |
| Dimensions | 22.5"H x 14.5"W x 16.6"D (571.5 x 368.3 x 421.6 mm) |
| Drivers | 10" Paper-pulp Cone woofer, 1.25-inch soft-dome tweeter |
| Impedance | 8 ohms nominal, 6.4 ohms minimum (measured, Erin's Audio Corner) |
| Sensitivity | 88.2dB (measured, Erin's Audio Corner) |
| Spinorama Preference Score | 3.25 |
| Spinorama Preference Score with Perfect Sub | 5.27 |
| Weight | 46.3 lbs (21.0 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
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