The Polk Audio XT70 ranks #129 out of 167 total Large Size Floorstanding Speakers for sound quality. See all Passive Home rankings for every top pick.
Brand: Polk
Prices on this page were last checked October 7, 2026 at 9:25 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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#129 Polk Audio XT70: $578 per pair Amazon eBay
Same family: the Polk Audio XT15 (smaller bookshelf, rated 3.7/5), the Polk Monitor XT20 (larger bookshelf, rated 3.4/5), the Polk Audio XT60 (smaller floorstanding, ranked lower, rated 3.5/5), the Polk Audio XT30 (smaller center, rated 3.6/5) and the Polk Audio XT35 (larger center, rated 4.1/5).
Pros: The flagship tower in Polk’s current Monitor XT lineup, sitting above the XT60 and XT15 in the same series, adding a second 6.5” woofer and dual 8” passive radiators for more low-end output. Rated for both 4 and 8 ohm operation. Measured bass extension of 43.9Hz (-3dB).
Cons: On-axis smoothness (0.274) and listening-window smoothness (0.303) are unremarkable for a tower this size, with a pronounced +0.28dB per octave upward tonal tilt giving it a brighter-leaning balance and a predicted in-room smoothness of just 0.31. Directivity-index standard deviation of 3.33 is unremarkable either way.
| Bass Extension (-10dB) | 37.7Hz (derived, sustained-crossing interpolation, Erin’s Audio Corner via spinorama.org) |
|---|---|
| Bass Extension (-3dB) | 43.9Hz (measured, Erin’s Audio Corner via spinorama.org) |
| Country | China |
| DIY Kit | No |
| Dimensions | 40.4H x 9.25W x 12.5D in |
| Drivers | 1” Terylene dome tweeter, 2x 6.5” Dynamic Balance woofers, 2x 8” passive radiators |
| Enclosure | Ported, critically-braced MDF |
| Impedance | 4/8 ohm compatible |
| Sensitivity | 89dB @ 1W/1m |
| Spinorama Preference Score | 5.16 |
| Spinorama Preference Score with Perfect Sub | 7.10 |
| Weight | 35.1 lbs (15.9 kg) each |
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