Short answer: the MoFi SourcePoint 8. It ranks #17 of 222 bookshelf speakers by sound quality, rated 4.5/5, at $2,594; the Dynaudio Special Forty ranks #148, rated 3.5/5, and costs $3,600, which makes this an easy call rather than a real tradeoff.
The MoFi SourcePoint 8 is the better-sounding choice. A bookshelf speaker with an 8 inch concentric driver, neutral sound, excellent imaging, and wide dispersion that forgives placement. The catch: Like other coincident designs, produces diffraction dips around 4kHz and 7kHz when pointed directly on-axis; needs about 10-15° of toe-out to smooth those out.
The case for the Dynaudio Special Forty: Premium bookshelf speakers with strong output, wide dispersion and fairly deep bass from a compact rear ported cabinet. The tradeoff: A glaring, sometimes sibilant quality around 3-4kHz was the most noticeable issue in listening, the one thing the reviewer would want notched out with EQ.
Buy the MoFi SourcePoint 8. It is rated higher for sound quality than the Dynaudio Special Forty and costs less, so it is the default pick unless a specific strength of the other one matters more to you.
Want more options? Browse the full Passive Home rankings.
Measured Differences
- Tonal accuracy above the bass: with a subwoofer taking the low end, the MoFi SourcePoint 8 scores 7.3 against 6.7 for the Dynaudio Special Forty on the Spinorama preference scale. Its frequency response and off-axis sound are smoother, so voices and instruments sound closer to the recording.
- Efficiency: the MoFi SourcePoint 8 is rated at 86.3 dB sensitivity against 83.5 dB for the Dynaudio Special Forty, so it plays as loud with roughly two thirds of the amplifier power.
- Close enough not to matter: bass extension (43 Hz vs 39 Hz, 10 dB down).
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Specifications Side By Side
| MoFi SourcePoint 8 | Dynaudio Special Forty | |
|---|---|---|
| Price | $2594 per pair | $3600 per pair |
| Ranked | #17 of 222 in Large Size Bookshelf Speakers | #148 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 43Hz (measured, Erin’s Audio Corner) | 39Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 52Hz (measured, Erin’s Audio Corner) | 54Hz (measured, Erin’s Audio Corner) |
| Dimensions | 18”H x 11.4”W x 13.2”D (457.2 x 289.6 x 335.3 mm) | 14.1”H x 7.7”W x 12.1”D (358.1 x 195.6 x 307.3 mm) |
| Impedance | 8 ohms nominal (8 ohms minimum above 80Hz, measured, Erin’s Audio Corner) | 6 ohms nominal (4.9 ohms minimum above 80Hz, measured, Erin’s Audio Corner) |
| Sensitivity | 86.3dB (measured, Erin’s Audio Corner) | 83.5dB (measured, Erin’s Audio Corner; 86dB manufacturer specified) |
| Drivers | 8” woofer, 1.25-inch soft-dome tweeter | 5.9” MSP (Magnesium Silicate Polymer) cone woofer, 1” Esotar soft dome tweeter |
| Weight | 28 lbs (12.7 kg) each | 17.9 lbs (8.1 kg) each |
| Woofer Cabinet | ported, rear | ported |
| Spinorama Preference Score | 5.15 | 4.73 |
| Spinorama Preference Score with Perfect Sub | 7.28 | 6.74 |
| DIY Kit | No | No |
Watch Them Compared
Videos and reviews that test both speakers side by side.
Where the Ratings Come From
- MoFi SourcePoint 8: Spinorama.org measurements and reviews by Erin’s Audio Corner and GR-Research.
- Dynaudio Special Forty: Spinorama.org measurements and reviews by Erin’s Audio Corner.
This comparison is generated from the ratings, specifications and measurements on each product’s own page, and it updates when that data changes. How we rank explains how each rating is decided.
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