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 XT30 ranks #49, rated 3.6/5, at $139, $140 cheaper, a saving that is not big enough to make up the sound-quality gap.
The Polk Audio XT35 is the more accurate pick. A slim center only 106mm tall, built to sit under a TV, with a 1” Terylene dome tweeter between four 3” woofers. Its measured preference score, a predictor of how neutral it sounds, is 4.43 against 3.89 for the Polk Audio XT30. Watch for: Small woofers limit bass to 85Hz (-3dB) and about 59Hz (-10dB), so it really needs a subwoofer with a crossover around 100Hz.
Why pick the Polk Audio XT30: One of the least expensive centers here at $139, with a 1” Terylene dome tweeter between two 5.25” woofers and 89dB sensitivity. The tradeoff: The listening window spans 3.0dB from 300Hz to 5kHz and the predicted in-room response is not very smooth (0.51), so it sounds less even off axis and in reflective rooms.
Buy the Polk Audio XT35. It is rated higher for sound quality, and the $140 saving on the Polk Audio XT30 is not enough to make up the difference.
Want more options? Browse the full Passive Home rankings.
Specifications Side By Side
| Polk Audio XT35 | Polk Audio XT30 | |
|---|---|---|
| Price | $279.00 each | $139.00 each |
| Ranked | #14 of 98 in Center Channel Speakers | #49 of 98 in Center Channel Speakers |
| Drivers | 1” Terylene dome tweeter, 4x 3” bi-laminate paper woofers | 1” Terylene dome tweeter, 2x 5.25” bi-laminate paper woofers |
| Frequency Response | 84Hz-26kHz (manufacturer specified) | 77Hz-26kHz -3dB (manufacturer specified) |
| Sensitivity | 87dB (manufacturer specified) | 89dB (manufacturer specified) |
| Impedance | 8 ohms nominal (manufacturer specified) | - |
| Dimensions | 4.2”H x 24.4”W x 5.6”D (106 x 620 x 141 mm) | 6.5”H x 19”W x 8.1”D (166 x 483 x 207 mm) |
| Weight | 14.1 lbs (6.4 kg) | 13 lbs (5.9 kg) |
| Bass Extension (-3dB) | 85.0Hz (measured, Erin’s Audio Corner) | 77.6Hz (measured, Erin’s Audio Corner) |
| Bass Extension (-10dB) | about 59.4Hz (measured, Erin’s Audio Corner) | about 50.7Hz (measured, Erin’s Audio Corner) |
| Spinorama Preference Score | 4.43 | 3.89 |
| Spinorama Preference Score with Perfect Sub | 7.34 | 6.50 |
| DIY Kit | No | No |
| Woofer Cabinet | - | ported (rear) |
Related Speaker Comparisons
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- Polk Audio XT35 vs Polk Audio Reserve R350
- Polk Audio XT35 vs Aperion Audio Novus N5C
- Polk Audio XT35 vs Wharfedale Diamond 12.Ci
- Polk Audio XT35 vs Polk Audio Reserve R300
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 Aperion Audio Novus N5C
- Polk Audio XT35 vs Wharfedale Diamond 12.Ci
- Polk Audio XT35 vs Polk Audio Reserve R300
- 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 XT30: $139.00 each Amazon eBay
Pros: One of the least expensive centers here at $139, with a 1” Terylene dome tweeter between two 5.25” woofers and 89dB sensitivity. Erin’s Audio Corner measured a flat on-axis response (0.26 average deviation) and deeper bass than the slimmer XT35, reaching 77.6Hz (-3dB) and about 51Hz (-10dB). Measured bass extension of 77.6Hz (-3dB).
Cons: The listening window spans 3.0dB from 300Hz to 5kHz and the predicted in-room response is not very smooth (0.51), so it sounds less even off axis and in reflective rooms. The preference score without a subwoofer is 3.89.
Full Polk Audio XT30 review and specifications →
| Bass Extension (-10dB) | about 50.7Hz (measured, Erin’s Audio Corner) |
|---|---|
| Bass Extension (-3dB) | 77.6Hz (measured, Erin’s Audio Corner) |
| DIY Kit | No |
| Dimensions | 6.5”H x 19”W x 8.1”D (166 x 483 x 207 mm) |
| Drivers | 1” Terylene dome tweeter, 2x 5.25” bi-laminate paper woofers |
| Frequency Response | 77Hz-26kHz -3dB (manufacturer specified) |
| Sensitivity | 89dB (manufacturer specified) |
| Spinorama Preference Score | 3.89 |
| Spinorama Preference Score with Perfect Sub | 6.50 |
| Weight | 13 lbs (5.9 kg) |
| Woofer Cabinet | ported (rear) |
- Links
- Reviews, Comparisons and Sound Samples
- Head-to-Head Comparisons