Short answer: the MoFi SourcePoint 10 on measured sound quality, the Polk Signature Elite ES20 on price. The MoFi SourcePoint 10 ranks #26 of 130 bookshelf speakers at $3795. The Polk Signature Elite ES20 ranks #69 at $359, $3436 cheaper.
What the Polk Signature Elite ES20 offers: A full-size, efficient 6.5-inch bookshelf pair with unusually deep bass for the price. ASR measured 41Hz estimated in-room extension, a well-damped Q of 0.66, broad horizontal coverage to roughly +/-60 degrees and a 5.54 preference score with a subwoofer. Watch for: Predicted in-room smoothness of 0.238 and directivity-index consistency of 3.81 are average rather than class-leading. The deep cabinet needs substantial shelf or stand space, and its Power Port still requires rear clearance.
What the MoFi SourcePoint 10 offers: 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. 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. 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.
Buy the Polk Signature Elite ES20 when the price outweighs sound quality for you, and the MoFi SourcePoint 10 when sound quality outweighs the price instead.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| Polk Signature Elite ES20 | MoFi SourcePoint 10 | |
|---|---|---|
| Price | $359 per pair | $3795 per pair |
| Ranked | #69 of 130 in Large Size Bookshelf Speakers | #26 of 130 in Large Size Bookshelf Speakers |
| Enclosure | 2-way, Power Port bass-reflex | - |
| Drivers | 1" Terylene dome tweeter, 6.5" polypropylene woofer | 10" Paper-pulp Cone woofer, 1.25-inch soft-dome tweeter |
| Dimensions | 14.8H x 8.5W x 13.8D in | 22.5"H x 14.5"W x 16.6"D (571.5 x 368.3 x 421.6 mm) |
| Weight | 17 lbs (7.7 kg) each | 46.3 lbs (21.0 kg) each |
| Sensitivity | 86dB | 88.2dB (measured, Erin's Audio Corner) |
| Impedance | 4/8-ohm compatible | 8 ohms nominal, 6.4 ohms minimum (measured, Erin's Audio Corner) |
| Country | United States (design) | - |
| Spinorama Preference Score | 3.60 | 3.25 |
| Spinorama Preference Score with Perfect Sub | 5.54 | 5.27 |
| Bass Extension (-10dB) | - | 38Hz (measured, Erin's Audio Corner) |
| Bass Extension (-3dB) | - | 56Hz (measured, Erin's Audio Corner) |
| Woofer Cabinet | - | ported, rear |
Related Speaker Comparisons
How MoFi SourcePoint 10 compares with other leading options:
- MoFi SourcePoint 10 vs Perlisten S4b
- KEF Reference 1 Meta vs MoFi SourcePoint 10
- GR-Research NX-Studio vs MoFi SourcePoint 10
- AsciLab C6B vs MoFi SourcePoint 10
- Audio First Cadentia 3 vs MoFi SourcePoint 10
Prices on this page were last checked September 16, 2026 at 12:41 AM 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.
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The Two Speakers In Full
Polk Signature Elite ES20: $359 per pair B&H Photo Video eBay
Pros: A full-size, efficient 6.5-inch bookshelf pair with unusually deep bass for the price. ASR measured 41Hz estimated in-room extension, a well-damped Q of 0.66, broad horizontal coverage to roughly +/-60 degrees and a 5.54 preference score with a subwoofer.
Cons: Predicted in-room smoothness of 0.238 and directivity-index consistency of 3.81 are average rather than class-leading. The deep cabinet needs substantial shelf or stand space, and its Power Port still requires rear clearance.
Full Polk Signature Elite ES20 review and specifications →
| Country | United States (design) |
|---|---|
| Dimensions | 14.8H x 8.5W x 13.8D in |
| Drivers | 1" Terylene dome tweeter, 6.5" polypropylene woofer |
| Enclosure | 2-way, Power Port bass-reflex |
| Impedance | 4/8-ohm compatible |
| Sensitivity | 86dB |
| Spinorama Preference Score | 3.60 |
| Spinorama Preference Score with Perfect Sub | 5.54 |
| Weight | 17 lbs (7.7 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
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MoFi SourcePoint 10: $3795 per pair Crutchfield eBay
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. Measured bass extension of 56Hz (-3dB), with a measured sensitivity of 88.2dB.
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.
Full MoFi SourcePoint 10 review and specifications →
| Bass Extension (-10dB) | 38Hz (measured, Erin's Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 56Hz (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) |
| Drivers | 10" Paper-pulp Cone woofer, 1.25-inch soft-dome tweeter |
| Impedance | 8 ohms nominal, 6.4 ohms minimum (measured, Erin's Audio Corner) |
| Sensitivity | 88.2dB (measured, Erin's Audio Corner) |
| Spinorama Preference Score | 3.25 |
| Spinorama Preference Score with Perfect Sub | 5.27 |
| Weight | 46.3 lbs (21.0 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
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