Sold by: Newegg
  • $399.00

Are you an E-Blast Insider?

Polk Monitor XT12 High Performance 100W 12" Powered Subwoofer - Black

In stock. Limit 4 per customer.
Ships from United States.
  • MXT70
  • MXT60
  • MXT35
  • MXT30
  • MXT15
  • MXT12_SUB
  • 12" long-throw, high-excursion driver
  • Bi-laminate paper woofer with foam surround
  • Built-in 50-watt RMS Class AB amplifier (100-watt peak)
  • Bass-reflex (ported) enclosure
  • Braced MDF cabinet minimizes resonance for clean bass
  • Frequency response: 24-160 Hz
  • Low-pass crossover: 80-160 Hz
  • Phase switch: 0/180°
  • Line-level stereo RCA input
  • 5-way binding post speaker-level input and output
Polk Audio Speakers
Polk Audio Speakers

We Make Loud and Low Seem Effortless

Polk has always been known for speakers that produce, deep, powerful, effortless bass, and the MXT12 is no exception. A big, 12" Dynamically Balanced woofer in a ported cabinet, powered by a clean and ultra-efficient 100W Class A/B amplifier delivers bass as low as 24Hz, adding more punch and impact to your favorite music, movies and video games.

Polk Audio Speakers

Built to Withstand the Rumble

When you want bass this loud and this low your subwoofer needs more than a great woofer and powerful amplifier to make it seem effortless. Monitor XT12 is housed in a critically braced MDF cabinet with a removable, precision-fit grille to isolate the sound of the woofer while minimizing unwanted resonances and sonic interference.

Polk Audio Speakers

Add Massive Bass, Seamlessly to Your Home Theater

The MXT12 is perfect for the modern trend of integrating two subwoofers in your home theater. This ensures you have more even bass, while evening out the low frequencies throughout the room. Whether you choose one sub or two, Monitor X12 features a consistently variable crossover, polarity and volume control so you can blend the massive bass it provides, seamlessly with your system.

Polk Audio Speakers
Polk Audio Speakers

Consistent Sound Throughout the Series

The Monitor XT Series was designed with quality, timbre-consistent components throughout to enable you to mix and match models to build your dream home theater or music listening setup. Matched components provide a unified sound field with seamless speaker-to-speaker blending for truly immersive listening experiences.

Polk Audio Speakers

Modern Styling Nearly Five Decades in the Making

Monitor XT Series is the latest evolution of Polk's critically acclaimed Monitor speaker line originally introduced in 1974. We've continued to refine our craft since then and they feature our latest innovations in affordable, but great sounding drivers and cabinetry. Plus, their modern, stylish design will fit with any home.

Polk Audio Speakers

Polk-Patented Quality and Five-Year Warranty

Designed and engineered by the same team that created Polk Legend and Reserve in our Acoustics Research and Development center outside of Baltimore, MD. Polk uses a patented Dynamic Balance Array process to pinpoint and eliminate electro-acoustic and mechanical issues before they become a part of the finished speaker. We're so confident of this process, that we back the Monitor XT Series with a limited five-year warranty to ensure years of listening enjoyment.

Warranty & Returns

Warranty, Returns, And Additional Information


  • Limited Warranty period (parts): 3 years
  • Limited Warranty period (labor): 3 years
  • Read full details

Return Policies

Manufacturer Contact Info