Polk Monitor XT12

12” High Performance, 100W Powered Subwoofer

  • Engineering and designed in the USA
  • Great sound for every room
  • Limited warranty: 3-year Amplifier/5-Year Speaker
  • Built to last

Maximize Your Enjoyment

More Bass for Your Home Theater and Music

Monitor XT12 provides Polk’s loud, low, effortless bass so you can enjoy movies, music and gaming with more impact and excitement. Easily integrated into any home theater or music listening environment, and featuring new woofer, amplifier, and cabinet designs—the affordably priced MXT12 fulfills the Polk promise of great sound for all.


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.

Built To Withstand The Rumble

When you want bass this loud and this low your subwoofer needs more than 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.

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. In addition, MXT12 offers line level, LFE, and nickel plated, binding post inputs, ensuring a direct connection and compatibility with your receiver.

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 set up. Matched components provide a unified sound field with seamless speaker-to-speaker blending for truly immersive listening experiences.


Best Speaker System for Home Theatre

"High Resolution at an incredible price!"

  • Specifications
  • Support
Tech Specs


  • Peak Power Handling
  • Continuous Power Handling
  • Width
    16" (40,7cm)
  • Height
    16.4" (41,8cm)
  • Depth
    17.9" (45,6cm)
  • Weight
    39lbs (17.7kg)
  • Speaker
    Left/right 5-way binding posts
  • Color
    Black (vinyl)
  • Feet
    Permantly installed feet
  • LFE
    Single RCA
  • Line Level
  • Transducers
    12" bi-laminate paper (foam surround)
  • Bass Type
    Bass reflex (ported)
  • Low-Pass Crossover Frequency
    80 Hz → 160 Hz
  • Phase Adjustment
  • Amplifier Type
    Class AB
  • Continuous Power
  • Peak Power