Polk Reserve R100 Review: Ranked #93 of 131

Last updated: September 26, 2026

The Polk Reserve R100 ranks #93 out of 131 total Large Size Bookshelf Speakers for sound quality. See all Passive Home rankings for every top pick.

Brand: Polk

Prices on this page were last checked September 28, 2026 at 4:33 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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Polk Reserve R100 - ranked #93 of 131 Large Size Bookshelf Speakers · Editor's rating 3.4/5
Check price at Amazon ($699.00 per pair) →

#93 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.

How it compares: Just above it: XTZ Spirit 4 - $222 cheaper, 1Hz higher bass extension (-3dB). Just below it: Focal Aria 906 - $1500 more, 1.5Hz higher bass extension (-3dB).

Bass Extension (-10dB)49Hz (measured, Erin’s Audio Corner)
Bass Extension (-3dB)68Hz (measured, Erin’s Audio Corner)
DIY KitNo
Dimensions12.8”H x 6.5”W x 10.2”D
Drivers1” Pinnacle ring-radiator tweeter; 5.25” Turbine Cone midwoofer
Impedance3.6 ohms minimum (measured, Erin’s Audio Corner)
Sensitivity85dB/2.83V/1m (measured, Erin’s Audio Corner)
Spinorama Preference Score5.46
Spinorama Preference Score with Perfect Sub7.93
Weight12.1 lbs (5.5 kg) each
Woofer Cabinetported, rear X-Port
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