Short answer: the MoFi SourcePoint 10, since both are bright but only one leads elsewhere. The SourcePoint 10’s concentric driver delivers the reviewer’s best-in-class sound power and early-reflections directivity, though it sounds notably bright on-axis from a deliberate treble lift, and it costs $3,517.50 more. The Polk XT20 is a two-way with a 1” tweeter and 6.5” woofer whose treble is elevated roughly 1-5dB above the midrange.
Buy the MoFi SourcePoint 10 when sound quality outweighs the price for you, and the Polk Monitor XT20 when the price outweighs sound quality instead.
Still deciding? The full Passive Home rankings cover every ranked option.
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Specifications Side By Side
| MoFi SourcePoint 10 | Polk Monitor XT20 | |
|---|---|---|
| Price | $3795 per pair | $277.50 per pair |
| Ranked | #27 of 222 in Large Size Bookshelf Speakers | #157 of 222 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 38Hz (measured, Erin’s Audio Corner) | 43.4Hz (derived, log-interpolated between spinorama.org -9dB/-12dB points) |
| Bass Extension (-3dB) | 56Hz (measured, Erin’s Audio Corner) | 64.5Hz (measured, Erin’s Audio Corner) |
| Dimensions | 22.5”H x 14.5”W x 16.6”D (571.5 x 368.3 x 421.6 mm) | 13”H x 7.5”W x 11”D (330.2 x 190.5 x 279.4 mm) |
| Impedance | 8 ohms nominal, 6.4 ohms minimum (measured, Erin’s Audio Corner) | 8 ohms nominal (measured, Erin’s Audio Corner) |
| Sensitivity | 88.2dB (measured, Erin’s Audio Corner) | 86dB (measured by Erin’s Audio Corner; 87dB manufacturer specified) |
| Drivers | 10” Paper-pulp Cone woofer, 1.25-inch soft-dome tweeter | 6.5” bilaminate paper cone woofer, 1” Terylene dome tweeter |
| Weight | 46.3 lbs (21.0 kg) each | 11.9 lbs (5.4 kg) each |
| Woofer Cabinet | ported, rear | ported |
| Spinorama Preference Score | 4.16 | 4.71 |
| Spinorama Preference Score with Perfect Sub | 6.17 | 7.07 |
| DIY Kit | No | No |
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