Short answer: the MoFi SourcePoint 8. It ranks #17 of 222 bookshelf speakers by sound quality, rated 4.5/5, at $2,594. The Ascend Acoustics Sierra-2EX V2 ranks #41, rated 4.3/5, at $1,748, $846 cheaper, not enough of a saving to outweigh the sound-quality gap.
The Ascend Acoustics Sierra-2EX V2 is the more accurate option. A ribbon tweeter bookshelf speaker with hand matched pairs, a frequency response printout for each unit, and a long seven year warranty. Its measured preference score, a predictor of how neutral it sounds, is 5.88 against 5.15 for the MoFi SourcePoint 8. The tradeoff: On-axis response is relatively uneven, with an average deviation of about 0.45dB, so a listener sitting dead center may notice more unevenness than with smoother AsciLab or Ascend towers.
The MoFi SourcePoint 8 is the deeper-bass option. A bookshelf speaker with an 8 inch concentric driver, neutral sound, excellent imaging, and wide dispersion that forgives placement. Its bass reaches about 52Hz before falling 3dB, against 58.6Hz for the Ascend Acoustics Sierra-2EX V2. The tradeoff: 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.
Buy the MoFi SourcePoint 8. It is rated higher for sound quality, and the $846 saving on the Ascend Acoustics Sierra-2EX V2 is not enough to make up the difference.
Still deciding? The full Passive Home rankings cover every ranked option.
A ribbon tweeter bookshelf speaker with hand matched pairs, a frequency response printout for each unit, and a long seven year warranty.
A bookshelf speaker with an 8 inch concentric driver, neutral sound, excellent imaging, and wide dispersion that forgives placement.
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Specifications Side By Side
| Ascend Acoustics Sierra-2EX V2 | MoFi SourcePoint 8 | |
|---|---|---|
| Price | $1,748 per pair | $2594 per pair |
| Ranked | #41 of 222 in Large Size Bookshelf Speakers | #17 of 222 in Large Size Bookshelf Speakers |
| Enclosure | ported | - |
| Drivers | RAAL 10mm true ribbon tweeter, 6” SEAS Excel Curv cone woofer | 8” woofer, 1.25-inch soft-dome tweeter |
| Dimensions | 14.3”H x 7.5”W x 10.5”D (362 x 190 x 267 mm) | 18”H x 11.4”W x 13.2”D (457.2 x 289.6 x 335.3 mm) |
| Weight | 20.1 lbs (9.1 kg) each | 28 lbs (12.7 kg) each |
| Sensitivity | 85dB @ 2.83V/1m anechoic (manufacturer) | 86.3dB (measured, Erin’s Audio Corner) |
| Impedance | 8 ohms nominal | 8 ohms nominal (8 ohms minimum above 80Hz, measured, Erin’s Audio Corner) |
| Power Handling | 150W continuous, 300W peak | - |
| Frequency Response | 51-27,000Hz +/-3dB (manufacturer) | - |
| Bass Extension (-6dB) | 51.3Hz (measured, spinorama.org vendor data) | - |
| Bass Extension (-3dB) | 58.6Hz (measured, spinorama.org vendor data) | 52Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 42.4Hz (measured, spinorama.org vendor data) | 43Hz (measured, Erin’s Audio Corner) |
| Warranty | 7 years parts and labor | - |
| Country | United States | - |
| Spinorama Preference Score | 5.88 | 5.15 |
| Spinorama Preference Score with Perfect Sub | 7.95 | 7.28 |
| DIY Kit | No | No |
| Woofer Cabinet | - | ported, rear |
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