Polk Audio MXT12 Subwoofer
- Subwoofer
- 12 inches
- 100 watts
- Polk Audio
- More reviewed than 69%
A 12-inch, 100W floor-standing subwoofer for filling out bass in a receiver-based home theater setup.
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How it ranks among the 74 subwoofers we track
4.6★ across 252 Amazon ratings, Bayesian-smoothed toward the category average.
252 Amazon ratings, weighted on a log scale so huge counts don't drown everything.
Modest tracked demand last month.
Brand identity, imagery, description and spec coverage.
The ProductDome score is separate from the Amazon rating shown above: it combines the Bayesian-smoothed Amazon rating with evidence volume, tracked demand, and data quality across the 74 subwoofers we track - how the scorecard works · full subwoofers data report. Confidence: medium - useful but incomplete evidence.Last refreshed Aug 4, 2026. Data-computed, not a hands-on test. Compiled by the ProductDome Research Team.
Overview
A 100-watt powered subwoofer with a 12-inch driver, built for floor placement in black. It connects via RCA and measures 16 x 18 x 16 inches at 39 lb.
The 12-inch driver and 100W power rating put this in Polk's mid-size subwoofer range, sized for floor-standing placement rather than a bookshelf or under-desk spot. RCA is the only connectivity listed, so it pairs with a receiver or amp that has a subwoofer output.
- 12 in driver
- 100W power
- RCA connectivity
- 39 lb, floor standing
Who it's for
Fits a home theater setup adding low-end bass to a speaker system through an AV receiver's RCA subwoofer output. Not for a setup that needs wireless subwoofer connectivity.
Strengths and trade-offs
Drawn from this product's published specifications.
- 12 inch driver for low-end output
- 100W power rating
- RCA only, no wireless connectivity
- 39 lb, fixed floor placement rather than portable
Performance notes
The 12-inch driver and 100W power rating are sized for floor-standing placement, with RCA as the sole wired connection back to a receiver or amp's subwoofer output.
Specifications
| Brand | Polk Audio |
|---|---|
| Model | MXT12 |
| Dimensions & fit | |
| Driver Size | 12 inches |
| Weight | 39 pounds |
| Dimensions | 16 × 18 × 16 inches |
| Power & efficiency | |
| Power | 100 watts |
| Construction & materials | |
| Color | Black |
| Compatibility & installation | |
| Connectivity | RCA |
| Mounting | Floor Standing |
| Other details | |
| Brand Tech | Polk Audio |
| Speaker Type | Subwoofer |
Other Polk Audio subwoofers
How it compares
This product against the closest alternatives we track in subwoofers.
| Product | Amazon rating | Ratings | ProductDome score |
|---|---|---|---|
| Polk Audio MXT12 SubwooferThis product | 4.6 / 5 | 252 | 3.7 / 5 |
| Klipsch R-12SW SubwooferKlipsch | 4.8 / 5 | 5,723 | 4.1 / 5 |
| Sonos SUBG3US1BLK SubwooferSonos | 4.7 / 5 | 1,900 | 3.9 / 5 |
| Audioengine S8 SubwooferAudioengine | 4.7 / 5 | 758 | 3.9 / 5 |
| Edifier T5 SubwooferEdifier | 4.4 / 5 | 1,800 | 3.8 / 5 |
Similar subwoofers from other brands
Questions about the Polk Audio MXT12
Common buyer questions answered straight from the product spec data - no fluff, no "it depends".
What size driver does the Polk Audio MXT12 use?
A 12-inch driver.
How is it powered and connected?
It is a 100W powered subwoofer connecting via RCA.
Is it meant for floor or shelf placement?
It is designed for floor-standing placement.