Short answer: the SVS Prime Bookshelf. It ranks #90 of 134 bookshelf speakers by sound quality, rated 3.5/5, at $699; the Polk Reserve R100 ranks #96, rated 3.4/5, at $699. Close enough in price that the sound-quality gap is the deciding factor.
Buy the SVS Prime Bookshelf. It is rated higher for sound quality than the Polk Reserve R100 at the same price, so only choose the other one for a particular feature it does better.
Looking for alternatives? See the complete Passive Home rankings.
Specifications Side By Side
| SVS Prime Bookshelf | Polk Reserve R100 | |
|---|---|---|
| Price | $699.00 per pair | $699.00 per pair |
| Ranked | #90 of 134 in Large Size Bookshelf Speakers | #96 of 134 in Large Size Bookshelf Speakers |
| Drivers | 6.5” polypropylene cone woofer with aluminum shorting ring (sealed sub-compartment), 1” aluminum dome tweeter | 1” Pinnacle ring-radiator tweeter; 5.25” Turbine Cone midwoofer |
| Weight | 15.5 lbs (7.03 kg) each | 12.1 lbs (5.5 kg) each |
| Impedance | 8 ohms nominal, 3.9 ohms minimum (measured, Erin’s Audio Corner) | 3.6 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 87dB (measured average, Erin’s Audio Corner) | 85dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Bass Extension (-3dB) | 72Hz (measured, Erin’s Audio Corner) | 68Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | 49Hz (measured, Erin’s Audio Corner) | 49Hz (measured, Erin’s Audio Corner) |
| Frequency Response | 48Hz - 25kHz ±3dB (manufacturer specified) | - |
| Spinorama Preference Score | 5.17 | 5.46 |
| Spinorama Preference Score with Perfect Sub | 7.78 | 7.93 |
| Dimensions | 13.2”H x 8”W x 10.2”D (335.3 x 203.2 x 259.1 mm) | 12.8”H x 6.5”W x 10.2”D |
| DIY Kit | No | No |
| Woofer Cabinet | - | ported, rear X-Port |
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Prices on this page were last checked October 2, 2026 at 10:18 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.
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The Two Speakers In Full
SVS Prime Bookshelf: $699.00 per pair Amazon eBay
Pros: Reasonable sensitivity for the price at about 87dB, and the 6.5” woofer sits in its own dedicated sealed sub-compartment inside the cabinet for cleaner midrange/bass separation. Overall response stays within about ±3dB from 80Hz-16kHz, which the reviewer calls reasonable for the price point. Wide, consistent horizontal radiation. Toeing the speakers 30 degrees off-axis smooths the in-room response noticeably if the on-axis tonal balance isn’t to your taste. Measured bass extension of 72Hz (-3dB), with a measured sensitivity of 87dB.
Cons: A scooped mid-range paired with a boosted upper mid-range creates an audibly uneven tonal balance, and there’s an additional dip in the treble around 4-5kHz that reads as slightly tinny relative to the recessed mid-range. Measured minimum impedance dips below 4 ohms (EPDR even lower), so an 8-ohm-only amplifier or AVR may struggle: a 4-ohm-stable amp or separate amplification is recommended. Bass extension is modest (F3 72Hz, F10 49Hz measured): SVS clearly designed this to be paired with one of their subwoofers rather than to stand fully alone. Compared directly against its pricier sibling, the SVS Ultra Bookshelf, in the same review, the reviewer found the Ultra noticeably more tonally neutral.
Full SVS Prime Bookshelf review and specifications →
| Bass Extension (-10dB) | 49Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 72Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 13.2”H x 8”W x 10.2”D (335.3 x 203.2 x 259.1 mm) |
| Drivers | 6.5” polypropylene cone woofer with aluminum shorting ring (sealed sub-compartment), 1” aluminum dome tweeter |
| Frequency Response | 48Hz - 25kHz ±3dB (manufacturer specified) |
| Impedance | 8 ohms nominal, 3.9 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 87dB (measured average, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.17 |
| Spinorama Preference Score with Perfect Sub | 7.78 |
| Weight | 15.5 lbs (7.03 kg) each |
- Links
- Reviews, Comparisons and Sound Samples
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Polk Reserve R100: $699.00 per pair Amazon Polk Audio eBay
Pros: Compact cabinet, unusually useful bass for its size and well-controlled woofer breakup. Erin measured F3/F10 points of 68Hz/49Hz, and the X-Port vent avoids much of the chuffing and pipe resonance common to budget rear ports. The 5.25-inch Turbine Cone woofer and 1-inch Pinnacle ring-radiator tweeter produce good detail at moderate levels, while listening roughly 20° off-axis reduces part of the elevated top octave. Measured bass extension of 68Hz (-3dB), with a measured sensitivity of 85dB.
Cons: Erin measured only about 85dB sensitivity and the impedance reaches 3.6 ohms, so it is neither efficient nor an entirely benign AVR load. The treble runs roughly 3dB above the midrange and becomes aggressive above about 85dB SPL. A directivity discontinuity through the woofer/tweeter crossover means EQ cannot fully repair the power response, and a 400Hz impedance feature plus 500Hz-1kHz response irregularity suggests a cabinet or system resonance. Substantial low-frequency compression at higher playback levels limits clean dynamics.
Full Polk Reserve R100 review and specifications →
| Bass Extension (-10dB) | 49Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 68Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 12.8”H x 6.5”W x 10.2”D |
| Drivers | 1” Pinnacle ring-radiator tweeter; 5.25” Turbine Cone midwoofer |
| Impedance | 3.6 ohms minimum (measured, Erin’s Audio Corner) |
| Sensitivity | 85dB/2.83V/1m (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 5.46 |
| Spinorama Preference Score with Perfect Sub | 7.93 |
| Weight | 12.1 lbs (5.5 kg) each |
| Woofer Cabinet | ported, rear X-Port |
- Links
- Reviews, Comparisons and Sound Samples
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