Short answer: the MoFi SourcePoint 10 for better sound quality, the XTZ Spirit 4 for the lower price. The MoFi SourcePoint 10 ranks #27 of 222 bookshelf speakers, rated 4.4/5, at $3,795. The XTZ Spirit 4 ranks #159, rated 3.4/5, at $477, $3,318 cheaper.
What the XTZ Spirit 4 does well: Stand-mount speakers with a waveguide tweeter, adjustable treble and port tuning, wide coverage and fairly deep bass. The tradeoff: The third-party measurement is low confidence.
The MoFi SourcePoint 10 is the better-sounding choice. A large bookshelf speaker with a 10 inch concentric driver that acts like a point source, with a huge soundstage and strong, clean dynamics. Watch for: 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.
Buy the XTZ Spirit 4 if the price matters more than sound quality. Buy the MoFi SourcePoint 10 if sound quality matters more than the price.
Looking for alternatives? See the complete Passive Home rankings.
Stand-mount speakers with a waveguide tweeter, adjustable treble and port tuning, wide coverage and fairly deep bass.
A large bookshelf speaker with a 10 inch concentric driver that acts like a point source, with a huge soundstage and strong, clean dynamics.
Prices on this page were last checked October 31, 2026 at 7:11 PM UTC. Product prices and availability are accurate as of that date/time 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.
As an eBay Partner, we may be compensated if you make a purchase.
Specifications Side By Side
| XTZ Spirit 4 | MoFi SourcePoint 10 | |
|---|---|---|
| Price | $477 per pair | $3795 per pair |
| Ranked | #159 of 222 in Large Size Bookshelf Speakers | #27 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | about 40.0Hz (measured, Spinorama data) | 38Hz (measured, Erin’s Audio Corner) |
| Enclosure | 2-way passive, rear-ported | - |
| Drivers | 1” dome tweeter, 6.5” woofer | 10” Paper-pulp Cone woofer, 1.25-inch soft-dome tweeter |
| Dimensions | 13.8H x 7.5W x 10.6D in | 22.5”H x 14.5”W x 16.6”D (571.5 x 368.3 x 421.6 mm) |
| Weight | 17.9 lbs (8.1 kg) each | 46.3 lbs (21.0 kg) each |
| Sensitivity | 86dB | 88.2dB (measured, Erin’s Audio Corner) |
| Impedance | 4 ohms | 8 ohms nominal, 6.4 ohms minimum (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 4.18 | 4.16 |
| Spinorama Preference Score with Perfect Sub | 6.30 | 6.17 |
| Bass Extension (-3dB) | 42Hz (manufacturer specified) | 56Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No | No |
| Woofer Cabinet | - | ported, rear |
Related Speaker Comparisons
More worthwhile head-to-heads for MoFi SourcePoint 10: