Short answer: the MoFi SourcePoint 888. It ranks #8 of 188 floorstanding speakers by sound quality, rated 4.7/5, at $5,495. The Polk Audio Reserve R700 ranks #60, rated 4.3/5, at $2,398, $3,097 cheaper, which does not close the gap in sound quality.
Why pick the Polk Audio Reserve R700: Three-way design with a 1” ring radiator tweeter, 6.5” mid-range, and dual 8” mid-bass drivers in a ported, down-firing cabinet. Watch for: Compression in the high frequencies rises sharply between 96dB and 102dB output: a real limitation only at very high volumes (around 100dB at 3 meters), but a clear step down from pricier ($5,000+) towers.
The MoFi SourcePoint 888 is the better-sounding, deeper-bass choice. Three-way vented design: an 8” coaxial mid-range/1.25” dome tweeter driver plus two additional 8” woofers crossed at about 130Hz, giving genuinely full-range output (F3 34Hz, F10 26Hz) other than the deepest subsonic content. Its bass reaches about 34Hz before falling 3dB, against 40Hz for the Polk Audio Reserve R700. Watch for: A significant investment, best ordered from a dealer with a good return policy.
Buy the MoFi SourcePoint 888. It is rated higher for sound quality, and the $3,097 saving on the Polk Audio Reserve R700 is not enough to make up the difference.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| Polk Audio Reserve R700 | MoFi SourcePoint 888 | |
|---|---|---|
| Price | $2,398 per pair | $5495 per pair |
| Ranked | #60 of 188 in Large Size Floorstanding Speakers | #8 of 188 in Large Size Floorstanding Speakers |
| Bass Extension (-10dB) | 31Hz (measured, Erin’s Audio Corner) | 26Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 40Hz (measured, Erin’s Audio Corner) | 34Hz (measured, Erin’s Audio Corner) |
| Impedance | 4 ohms nominal, 3.5 ohms minimum (measured above 80Hz, Erin’s Audio Corner) | 6 ohms nominal, 5 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 87.5dB (measured average 300Hz-3kHz @ 2.83V/1m, Erin’s Audio Corner) | 85.6dB (measured, Erin’s Audio Corner) |
| Drivers | 2x 8” polypropylene cone woofers, 1x 6.5” turbine cone midrange, 1x 1” Pinnacle ring radiator tweeter | Dual 8” paper cone woofers, 8” Paper Cone midrange, 1.25” wide roll soft dome tweeter |
| Weight | 102.1 lbs (46.3 kg) | 94.8 lbs (43 kg) each |
| Woofer Cabinet | ported, down-firing | ported, rear |
| Dimensions | 45”H x 12.6”W x 16.9”D (1143.8 x 320.7 x 428.3 mm) | 41.2”H x 12.6”W x 16.1”D (1046.5 x 320 x 408.9 mm) |
| Spinorama Preference Score | 6.38 | 6.09 |
| Spinorama Preference Score with Perfect Sub | 7.83 | 7.21 |
| DIY Kit | No | No |
Related Speaker Comparisons
How MoFi SourcePoint 888 compares with other leading options:
- GR-Research NX-Treme vs MoFi SourcePoint 888
- KEF Blade Two Meta vs MoFi SourcePoint 888
- MoFi SourcePoint 888 vs MoFi SourcePoint V10 Master Edition
- MoFi SourcePoint 888 vs Revel F328Be
- Radiant Acoustics Clarity 66 vs MoFi SourcePoint 888
Prices on this page were last checked October 9, 2026 at 8:01 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 Audio Reserve R700: $2,398 per pair Amazon eBay
Same family: the Polk Reserve R100 (smaller bookshelf, rated 3.4/5), the Polk R200 (larger bookshelf, rated 3.2/5), the Polk Reserve R500 (smaller floorstanding, ranked lower, rated 4.2/5), the Polk Reserve R600 (smaller floorstanding, ranked lower, estimated 4.2/5), the Polk Audio Reserve R300 (smallest center, estimated 3.6/5), the Polk Audio Reserve R350 (center, rated 3.7/5) and the Polk Audio Reserve R400 (largest center, estimated 3.8/5).
Pros: Three-way design with a 1” ring radiator tweeter, 6.5” mid-range, and dual 8” mid-bass drivers in a ported, down-firing cabinet. On-axis frequency response holds within about ±2dB across most of its range, with genuinely deep bass extension (F3 40Hz) reaching into the mid-30s Hz in-room. Wide horizontal radiation of about ±70°, giving a strong, enveloping stereo width and stage-extension effect on well-recorded tracks. Good low-level dynamics: solid bass thump at quiet listening volumes without over-accentuation. Strong distortion and compression control through the bass and midrange. Real nominal impedance closer to 4 ohms than the marketed 8 ohms, so with the right amplifier it can be driven hard: a $3,000 two-channel integrated brought out significantly more life than a budget $300 unit could. Excellent value at its roughly $1199/pair, ranking among the reviewer’s top picks under $2,500; outperforms the similarly-priced Klipsch RP-8000F II in bass extension and overall smoothness. Measured bass extension of 40Hz (-3dB), with a measured sensitivity of 87.5dB.
Cons: Compression in the high frequencies rises sharply between 96dB and 102dB output: a real limitation only at very high volumes (around 100dB at 3 meters), but a clear step down from pricier ($5,000+) towers. Horizontal directivity mismatch around 4-5kHz, where the tweeter flares wider than the midrange, can sound a bit forward, especially noticeable when toed out further into the room; sidewall absorption or curtains help tame it. Harmonic distortion crosses the reviewer’s 3% threshold around 7kHz at 96dB output, possibly contributing to that same forward quality at high volume. Narrow vertical sweet spot (about ±15° from the tweeter axis), typical of non-coaxial tower designs: more of a consideration for multi-row home theater seating than single-row listening. The ring-radiator tweeter narrows noticeably above about 7-8kHz, and toeing the speaker out more than about 20° causes the top end to fall off quickly. Needs at least 2 feet of clearance from the rear wall to avoid boomy, exaggerated bass, since it lacks the bass-shelf tuning some rivals use to allow closer wall placement. Compared to the pricier KEF R5 Meta, has narrower horizontal (and much narrower vertical) directivity, so seating flexibility is more limited.
Full Polk Audio Reserve R700 review and specifications →
| Bass Extension (-10dB) | 31Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 40Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 45”H x 12.6”W x 16.9”D (1143.8 x 320.7 x 428.3 mm) |
| Drivers | 2x 8” polypropylene cone woofers, 1x 6.5” turbine cone midrange, 1x 1” Pinnacle ring radiator tweeter |
| Impedance | 4 ohms nominal, 3.5 ohms minimum (measured above 80Hz, Erin’s Audio Corner) |
| Sensitivity | 87.5dB (measured average 300Hz-3kHz @ 2.83V/1m, Erin’s Audio Corner) |
| Spinorama Preference Score | 6.38 |
| Spinorama Preference Score with Perfect Sub | 7.83 |
| Weight | 102.1 lbs (46.3 kg) |
| Woofer Cabinet | ported, down-firing |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Polk Audio Reserve R700 vs PSB Imagine T65
- Polk Audio Reserve R700 vs JBL HDI-3600
- Polk Audio Reserve R700 vs JBL Studio 698
- Polk Audio Reserve R700 vs Emotiva Airmotiv T2+
- Polk Audio Reserve R700 vs ELAC Debut 3.0 DF63
- Polk Audio Reserve R700 vs Polk Reserve R500
- Polk Audio Reserve R700 vs KEF R11 Meta
- Polk Audio Reserve R700 vs Infinity Primus 360
- See all 44 comparisons
MoFi SourcePoint 888: $5495 per pair Crutchfield eBay
Same family: the MoFi SourcePoint 8 (smaller bookshelf, rated 4.5/5) and the MoFi SourcePoint 10 (larger bookshelf, rated 4.4/5).
Pros: Three-way vented design: an 8” coaxial mid-range/1.25” dome tweeter driver plus two additional 8” woofers crossed at about 130Hz, giving genuinely full-range output (F3 34Hz, F10 26Hz) other than the deepest subsonic content. Ranked by the reviewer among his personal top three speakers out of roughly 200 tested, alongside the KEF Blade Two Meta and Dutch & Dutch 8C, despite costing a small fraction of either. Excellent compression/dynamic-range linearity, holding its own against much pricier speakers like the March Audio Sointuva AWG, KEF Reference 1 Meta, and KEF Blade Two Meta. On-axis (0°) and 30°-off-axis estimated in-room responses track within about 1-1.5dB of each other above 500Hz, so tonal balance barely changes with placement or listening angle: excellent for multi-seat home theater or entertaining. Wide horizontal dispersion of about ±60°. Distortion stays low: under 1% at 86dB, and under 1% above 200Hz even at 96dB, with multitone distortion mostly under 1% as well. Not a difficult amplifier load (5-ohm minimum impedance, 4.2-ohm minimum EPDR). Checks the three boxes the reviewer considers essential for a home theater speaker: low compression, low distortion, and excellent directivity. Measured bass extension of 34Hz (-3dB), with a measured sensitivity of 85.6dB.
Cons: A significant investment, best ordered from a dealer with a good return policy. Large and heavy floorstander (about 96 lbs, 42” tall) requiring real floor space and rear clearance. Positioning is fairly specific: needs about 2 feet from the rear wall. Closer causes boominess in the 40-50Hz region, farther loses bass extension. Vertical dispersion (about ±50°) is narrower than horizontal (about ±60°), since the two 8” woofers are spaced vertically apart on a tower cabinet, causing some vertical mismatch at lower frequencies. A small on-axis dip around 500Hz and a deliberately lower tweeter level (about 0.5dB below the midrange) are intentional design choices for smoother in-room response, but mean the raw on-axis measurement isn’t perfectly flat. A mild diffraction-related dip appears around 3kHz in directivity measurements. Toeing the speaker out more than about 10° starts to noticeably reduce top-end energy.
Full MoFi SourcePoint 888 review and specifications →
| Bass Extension (-10dB) | 26Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 34Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 41.2”H x 12.6”W x 16.1”D (1046.5 x 320 x 408.9 mm) |
| Drivers | Dual 8” paper cone woofers, 8” Paper Cone midrange, 1.25” wide roll soft dome tweeter |
| Impedance | 6 ohms nominal, 5 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 85.6dB (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 6.09 |
| Spinorama Preference Score with Perfect Sub | 7.21 |
| Weight | 94.8 lbs (43 kg) each |
| Woofer Cabinet | ported, rear |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- MoFi SourcePoint 888 vs Revel F328Be
- MoFi SourcePoint 888 vs Radiant Acoustics Clarity 66
- MoFi SourcePoint 888 vs MoFi SourcePoint V10 Master Edition
- MoFi SourcePoint 888 vs Ascend Acoustics ELX Ribbon Tower
- MoFi SourcePoint 888 vs KEF Blade Two Meta
- MoFi SourcePoint 888 vs GR-Research NX-Treme
- MoFi SourcePoint 888 vs KEF R5 Meta
- MoFi SourcePoint 888 vs Revel F226Be
- See all 37 comparisons