Polk Audio Monitor XT12 12" 100W Powered Subwoofer

$349.00 OR

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Model: 300414-01-00-101 UPC: 747192135058 Item: 177105

Product Information


  • Add Polk’s Legendary, Effortless Bass to Your Music, Movies, TV, and Video Games
  • Long-Throw, High Excursion 12” Dynamic Balanced Woofer for Deep Impact with Low Distortion
  • Powerful and Efficient 100W Class A/B Amplifier for Loud, Clean, and Responsive Performance
  • Smooth Low-Frequency Extension Down to 24hz, Perfect for Bass Heavy Music and Movie Action
  • Fine Tune to Your System with Volume, Consistently Variable Crossover (80–160Hz), and Phase Polarity (0/180) Control
  • Critically Braced, Low-Resonance MDF Cabinet & Removable, Precision-Fit Grille for Pure Sound
  • Timbre-Matched with Polk Monitor XT Series, but a Perfect Subwoofer for Any System
  • Add a Second MXT12 Subwoofer for Even More Bass and Smoother Low Frequencies
  • Polk Patented Quality Backed by Five Years Woofer, Three Years Amplifier Limited Warranty

Maximize 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 a new woofer, amplifier, and cabinet designs—the affordably priced MXT12 fulfills the Polk promise of great sound for all.

Making 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 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.

Add Massive Bass, Seamlessly to Your Home Theater

Monitor X12 features a consistently variable crossover, polarity, and volume control to blend the massive bass it provides, seamlessly with your system. In addition, MXT12 offers line level, LFE, and nickel-plated binding post inputs, ensuring compatibility with your receiver. Plus, the MXT12 is perfect for the modern trend of integrating two subs into your home theater, for even more bass, while smoothing out the low frequencies throughout the room.

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.



  • Amplifier Type: Class AB
  • Peak Power: 100W
  • Continous (RMS): 50W
  • Low-Pass Crossover Freq: 80Hz–160/LFE
  • Phase Adjustment: 0/180
  • Line Level: Yes
  • LFE: Single RCA
  • Speaker: Left/right 5-way binding posts
  • Color: Black (vinyl)
  • Transducers: 12" bi-laminate paper (foam surround)
  • Bass Type: Bass-reflex (ported)
  • Feet: Permanently installed feet
  • Dimensions (W x H x D): 16" x 16.4" x 17.9"
  • Weight: 39lbs/17.7kg


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