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12" Powered High-Performance 100W Subwoofer
Monitor XT12 provides Polk’s loud, low, effortless bass so you can enjoy movies, music and gaming with more impact and excitement.
- Engineered and designed in USA
- Great sound for every room
- Limited warranty: 3-year Amplifier/5-Year Speaker
- Built to last
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High resolution sound, effortless bass

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 favourite 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 theatre
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 theatre, for even more bass, while smoothing out the low frequencies throughout the room.

Solid Polk Sound
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 theatre or music listening set up. Matched components provide a unified sound field with seamless speaker-to-speaker blending for truly immersive listening experiences.
Key Technologies
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Proudly engineered and designed in Baltimore, Maryland, Polk products are crafted to meet high standards of quality, performance, and reliability, ensuring a premium audio experience that is the pinnacle of American Hi-Fi.
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Polk’s exclusive lightweight Dynamic Balance® Polypropylene Cones deliver spectacular midrange clarity, punchy bass and high efficiency.
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Proudly engineered and designed in Baltimore, Maryland, Polk products are crafted to meet high standards of quality, performance, and reliability, ensuring a premium audio experience that is the pinnacle of American Hi-Fi.
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Polk’s exclusive lightweight Dynamic Balance® Polypropylene Cones deliver spectacular midrange clarity, punchy bass and high efficiency.
Compare Polk Subwoofers



400W peak power using Class D amplification
Bass response down to 22 Hz


200W peak power using Class D amplification
Bass response down to 25 Hz
Purposeful design
Purposeful design




