Short answer: the MoFi SourcePoint 10 for the higher ranking, the Polk Monitor XT20 for the lower price. The MoFi SourcePoint 10 ranks #8 of 47 bookshelf speakers at $3500. The Polk Monitor XT20 ranks #35 at $279, $3221 cheaper.
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.
On the Polk Monitor XT20 side: Two-way bookshelf design with a 1” tweeter and 6.5” woofer. The tradeoff: Notably bright treble, elevated roughly 1-5dB above the midrange depending on frequency - a characteristic shared across the whole Polk XT.
Buy the MoFi SourcePoint 10 if the ranking matters more than the price. Buy the Polk Monitor XT20 if the price matters more than the ranking.
Specifications Side By Side
| MoFi SourcePoint 10 | Polk Monitor XT20 | |
|---|---|---|
| Price | $3500 | $279.00 |
| Ranked | #8 of 47 in Large Size Bookshelf Speakers | #35 of 47 in Large Size Bookshelf Speakers |
| Bass Extension (-10dB) | 38Hz | 50Hz |
| Bass Extension (-3dB) | 56Hz | 75Hz |
| 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 | 8 ohms |
| Sensitivity | 88dB | 87dB |
| 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 | Rear ported | Ported |
The Two Speakers In Full
MoFi SourcePoint 10: $3500 Crutchfield
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.
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.
| Bass Extension (-10dB) | 38Hz |
|---|---|
| Bass Extension (-3dB) | 56Hz |
| 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 |
| Sensitivity | 88dB |
| Weight | 46.3 lbs / 21.0 kg each |
| Woofer Cabinet | Rear ported |
- Reviews, Comparisons and Sound Samples
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Polk Monitor XT20: $279.00 Crutchfield Amazon
Pros: Two-way bookshelf design with a 1” tweeter and 6.5” woofer, part of Polk’s budget-friendly XT lineup (spanning roughly $200-700 across the series). Measures more linear and has fewer/smaller cabinet resonances than its smaller sibling, the XT15, making it - by the reviewer’s own assessment - probably the better of the two based on data alone. Reasonably good bass output for the price and size, with an F3 of 63Hz. Horizontal radiation of about ±50° gives a respectable, enjoyable soundstage width. Takes well to EQ correction - the early-reflections directivity trend is decently linear, meaning tonal adjustments can meaningfully improve the sound. Provides usable, respectable volume when paired with a subwoofer crossover, even though it isn’t intended to play extremely loud on its own.
Cons: Notably bright treble, elevated roughly 1-5dB above the midrange depending on frequency - a characteristic shared across the whole Polk XT lineup, requiring either EQ or toe-out to tame. Small resonances appear around 300Hz and 800Hz, with some of that energy leaking from the port area. Vertical listening window is narrow - best kept close to the tweeter axis, with only a couple of degrees of tolerance above or below before the sound changes. Still needs a subwoofer for real low-end extension despite the decent F3. Overall linearity isn’t state-of-the-art flat, and while the reviewer found it pleasant, some artificial brightness remains even after basic EQ correction in the crossover region.
| Bass Extension (-10dB) | 50Hz |
|---|---|
| Bass Extension (-3dB) | 75Hz |
| Dimensions | 13"H x 7.5"W x 11"D (330.2 x 190.5 x 279.4 mm) |
| Drivers | 6.5" bilaminate paper cone woofer, 1" Terylene dome tweeter |
| Impedance | 8 ohms |
| Sensitivity | 87dB |
| Weight | 11.9 lbs / 5.4 kg each |
| Woofer Cabinet | Ported |
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Links
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Product prices and availability were last checked August 9, 2026 at 6:57 AM UTC 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.