Short answer: the Polk Audio XT35. It ranks #14 of 98 center channel speakers by sound quality, rated 4.1/5, at $279; the Polk Audio Reserve R300 ranks #54, rated 3.6/5, and costs $399, which makes this an easy call rather than a real tradeoff.
The Polk Audio XT35 is the better-sounding option. A slim center only 106mm tall, built to sit under a TV, with a 1” Terylene dome tweeter between four 3” woofers. The tradeoff: Small woofers limit bass to 85Hz (-3dB) and about 59Hz (-10dB), so it really needs a subwoofer with a crossover around 100Hz.
The case for the Polk Audio Reserve R300: 1-inch Pinnacle ring radiator tweeter and dual 5.25-inch Turbine cone woofers in a sealed enclosure. The tradeoff: 2-way horizontal MTM geometry creates off-axis response dips around the 2.2kHz crossover.
Buy the Polk Audio XT35. It is rated higher for sound quality than the Polk Audio Reserve R300 and costs less, which makes it the one to get unless you need something the other one does better.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| Polk Audio XT35 | Polk Audio Reserve R300 | |
|---|---|---|
| Price | $279.00 each | $399.00 |
| Ranked | #14 of 98 in Center Channel Speakers | #54 of 98 in Center Channel Speakers |
| Drivers | 1” Terylene dome tweeter, 4x 3” bi-laminate paper woofers | 1” Pinnacle ring radiator tweeter, 2 x 5.25” Turbine cone woofers |
| Frequency Response | 84Hz-26kHz (manufacturer specified) | 65Hz - 38kHz (-3dB) |
| Sensitivity | 87dB (manufacturer specified) | 86.5dB (2.83V/1m) |
| Impedance | 8 ohms nominal (manufacturer specified) | 8 ohms nominal (3.8 ohms minimum) |
| Dimensions | 4.2”H x 24.4”W x 5.6”D (106 x 620 x 141 mm) | 6.8”H x 19”W x 8.9”D (172 x 483 x 227 mm) |
| Weight | 14.1 lbs (6.4 kg) | 16.8 lbs (7.6 kg) |
| Bass Extension (-3dB) | 85.0Hz (measured, Erin’s Audio Corner) | - |
| Bass Extension (-10dB) | about 59.4Hz (measured, Erin’s Audio Corner) | - |
| Spinorama Preference Score | 4.43 | - |
| Spinorama Preference Score with Perfect Sub | 7.34 | - |
| DIY Kit | No | No |
| Enclosure | - | sealed |
Related Speaker Comparisons
How Polk Audio XT35 compares with other leading options:
- Polk Audio XT35 vs Klipsch RP-500C II
- Polk Audio XT35 vs Polk Audio Reserve R350
- Polk Audio XT35 vs Polk Audio XT30
- Polk Audio XT35 vs Aperion Audio Novus N5C
- Polk Audio XT35 vs Wharfedale Diamond 12.Ci
Prices on this page were last checked October 5, 2026 at 10:21 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
Polk Audio XT35: $279.00 each Amazon eBay
Pros: A slim center only 106mm tall, built to sit under a TV, with a 1” Terylene dome tweeter between four 3” woofers. Erin’s Audio Corner measured very low on-axis deviation (0.19, among the flattest of any center here) and a listening window within 2.2dB from 300Hz to 5kHz, for a preference score of 4.43 that reaches 7.34 with an ideal subwoofer. That is a remarkable result at $279. Measured bass extension of 85.0Hz (-3dB).
Cons: Small woofers limit bass to 85Hz (-3dB) and about 59Hz (-10dB), so it really needs a subwoofer with a crossover around 100Hz. Its predicted in-room response is less smooth (0.57) than the top centers here, so reflections color the sound more in a lively room.
Full Polk Audio XT35 review and specifications →
| Bass Extension (-10dB) | about 59.4Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 85.0Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 4.2”H x 24.4”W x 5.6”D (106 x 620 x 141 mm) |
| Drivers | 1” Terylene dome tweeter, 4x 3” bi-laminate paper woofers |
| Frequency Response | 84Hz-26kHz (manufacturer specified) |
| Impedance | 8 ohms nominal (manufacturer specified) |
| Sensitivity | 87dB (manufacturer specified) |
| Spinorama Preference Score | 4.43 |
| Spinorama Preference Score with Perfect Sub | 7.34 |
| Weight | 14.1 lbs (6.4 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons
- Polk Audio XT35 vs Klipsch RP-500C II
- Polk Audio XT35 vs Polk Audio Reserve R350
- Polk Audio XT35 vs Polk Audio XT30
- Polk Audio XT35 vs Aperion Audio Novus N5C
- Polk Audio XT35 vs Wharfedale Diamond 12.Ci
- Polk Audio XT35 vs Paradigm Monitor SE 2000C
- Polk Audio XT35 vs Polk Audio Signature Elite ES30
- Polk Audio XT35 vs Klipsch Reference R-50C
- See all 12 comparisons
Polk Audio Reserve R300: $399.00 Estimated Amazon eBay
Pros: 1-inch Pinnacle ring radiator tweeter and dual 5.25-inch Turbine cone woofers in a sealed enclosure. Clean on-axis linearity and smooth high-frequency dispersion matching the Reserve series.
Cons: 2-way horizontal MTM geometry creates off-axis response dips around the 2.2kHz crossover. Low 86.5dB sensitivity benefits from dedicated amplification. Rating estimated from Reserve family measurements.
Full Polk Audio Reserve R300 review and specifications →
| DIY Kit | No |
|---|---|
| Dimensions | 6.8”H x 19”W x 8.9”D (172 x 483 x 227 mm) |
| Drivers | 1” Pinnacle ring radiator tweeter, 2 x 5.25” Turbine cone woofers |
| Enclosure | sealed |
| Frequency Response | 65Hz - 38kHz (-3dB) |
| Impedance | 8 ohms nominal (3.8 ohms minimum) |
| Sensitivity | 86.5dB (2.83V/1m) |
| Weight | 16.8 lbs (7.6 kg) |
- Links
- Reviews, Comparisons and Sound Samples
- No independent measurement review is linked for this model; it is ranked from hands-on listening and comparison against similarly priced speakers.
- Head-to-Head Comparisons