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Polk Audio

Polk Monitor XT12 Powered Sub - 12" Dynamic Balanced Woofer & 100W Class A/B Amplifier, Low-Resonance MDF Cabinet & Removable Grille, Dolby Atmos & DTS:X Compatible, Midnight Black

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Availability: In Stock.
Fulfilled by Amazon
Arrives Tuesday, Aug 12
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Style: 12" Subwoofer (XT12)


Features

  • POWERFUL SUB FOR EFFORTLESS BASS - The Polk Monitor XT12 features a long-throw, high excursion 12" Dynamically Balanced Woofer, powered by a 100W Class A/B Amplifier that delivers bass as low as 24Hz, adding more impact to your music, movies, and games
  • PREMIUM BUILD QUALITY AND MODERN DESIGN - An upgrade to the critically acclaimed Monitor series, the Polk Monitor XT series features latest innovations in affordable, great sounding speakers, and their stylish design blends with any home decor
  • DISTORTION-FREE AUDIO - The MXT12 subwoofer is housed inside a rigid, critically braced MDF cabinet with a removable, precision-fit grille that isolates the sound of the woofer, while minimizing unwanted resonances and sonic interference for pure sound
  • VERSATILE COMPATIBILITY & CONVENIENT CONTROLS - This subwoofer is compatible with the latest Dolby Atmos & DTS:X enabled AV Receivers. Fine tune the MXT12 to your system easily with volume, variable crossover (80-160Hz) and phase polarity (0/180) control
  • NUMEROUS CONNECTION OPTIONS - The MXT12 perfectly complements most home theater systems. Easily connect your receiver with this subwoofer via line level (RCA), LFE (unfiltered / low pass disabled) and nickel plated, 5-way binding post inputs
  • ADD A SECOND SUB FOR RUMBLING AUDIO The timbre matched Polk components ensures seamless speaker-to-speaker blending with other Monitor XT speakers. Add another same-model sub for more bass and uniform low frequencies throughout the room

Description

The Polk Monitor XT12 subwoofer is outfitted with a 12” Dynamic Balanced Woofer and 100W peak Class A/B amplification that deliver loud, low, effortless bass so you can enjoy movies, music and gaming with more impact, amazing speed and control even at 24Hz. Equipped with convenient, built-in controls for volume, variable crossover (80-160Hz) and phase polarity (0/180) control. The sub is housed within a rigid, low-resonance cabinet to provide clean, loud bass. Easily integrated into any home theater or music listening environment, and featuring new woofer, amplifier, and cabinet designs—the MXT12 fulfills the Polk promise of great sound for all. Add another, same- model subwoofer to your home audio set up to dramatically improve realism, smooth out peaks and dips, as well as to get an even bass response for all your movies and music.

Brand: Polk Audio


Speaker Maximum Output Power: 100 Watts


Frequency Response: 40 KHz


Connectivity Technology: RCA


Audio Output Mode: Surround


Mounting Type: Floor Standing


Material: Engineered Wood


Model Name: MXT12


Speaker Type: Subwoofer


Special Feature: Dolby Enabled


Recommended Uses For Product: For Surround Sound Systems


Compatible Devices: Home Theater


Subwoofer Diameter: 12 Inches


Unit Count: 1.0 Count


Controller Type: Corded Electric


Surround Sound Channel Configuration: 5.1


Color: Black


Included Components: Speaker


Product Dimensions: 16"D x 18"W x 16"H


Item Weight: 39 Pounds


Impedance: 4 Ohm


Is Waterproof: FALSE


Number of Items: 1


Control Method: Remote


Speaker Size: 12 Inches


Power Source: Corded Electric


Woofer Diameter: 12 Inches


Water Resistance Level: Not Water Resistant


Audio Driver Type: Dynamic Driver


Subwoofer Connectivity Technology: Wired


Includes MP3 player?: No


UPC: 747192135058


Style: 12" Subwoofer (XT12)


Manufacturer: Polk


Item Weight: 39 pounds


Country of Origin: China


Item model number: MXT12


Is Discontinued By Manufacturer: No


Date First Available: August 24, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Aug 12

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • I Like These Speakers
Style: Large Tower Speaker (XT70)
Review Image by Chas Chas
What I can't tell you - I can't compare these speakers to a 2or 3 thousand dollar set of speakers. I have never had speakers that expensive and even much more in my home. I have heard them in a specialty store but not at home. They will sound different in the studio than at home. I do know the higher class speakers have beautifully constructed cabinets, well damped inside and higher quality components. What I can tell you - These speakers do look nice even though they are not made of fine woods and have rounded or beveled edges. In fact I have seen some brands of tower speakers that cost 3 times as much as these speakers and they have the same basic square edge construction on the outside. I think these speaker look impressive for the money. Ok, the grille is not magnetic but it is secure and looks very nice. The connection posts on the back are very nice. They added a nice touch to the base even though it is just cosmetic. Now on to the sound. I have these speakers hooked up to a brand new 80 watts per channel Yamaha amplifier (not receiver), a brand new Cambridge CD player, a brand new Andover Spindeck Max Turntable, and a high resolution streamer. I am using a new Klipsch 10 inch subwoofer all items purchased through Amazon. I am only using this system for stereo music. The highs from these speakers are very crisp and clear. The mid sound is warm and robust. The lows are very adequate but can come nowhere near to what a dedicated subwoofer can produce. I knew this going in which is why I wanted the subwoofer. Overall I am totally pleased with the music these towers produce and the 80 watt amp drives them beautifully and they can get quite loud without distortion unless you go nuts and over drive them to the extreme. Now would a 2 or 3 thousand dollar pair of towers out perform them? I would say yes. But the big question is does the 2 or 3 thousand dollar set give you a 2 or 3 thousand dollar performance increase? I would venture to say they are better but not thousands better. Of course this is my opinion and I am not an audiophile, but I have listened to different systems all of my life and I do know what sounds good and what does not. I have heard some crappy systems. I am sure an expert might hear or not hear things I should hear but again, I am totally pleased with the sound these speakers produce and I don't give a flying fig if they are missing a little detail. ... show more
Reviewed in the United States on December 14, 2023 by Chas Chas
    • Polk Audio Home Theater System Review Blown Away!
Style: 12" Subwoofer (XT12)
Review Image by Brandon C. Brandon C.
Let me start by saying I never leave reviews. But after finishing my dedicated theater room and firing up my Polk Audio setup, I had to make an exception. Simply put: I'm blown away. My system includes: 2 Polk XT70 Towers 2 XT30 Centers (yes, two centers, and clarity is unreal) 2 OWM3s for rear surround 1 XT12 Subwoofer Powered by a Denon AVR-S570BT I spent around $1,200–$1,300 on this setup, and it performs like something three to four times that price. I tested it with everything from Star Wars, Top Gun: Maverick, Mission: Impossible, Transformers, and the full Marvel catalog. Every explosion, orchestral swell, and whispered line is crisp, dynamic, and immersive. The sub hits hard when needed, and the highs and mids are perfectly balanced. Dialogue clarity is exceptional, and music playback is just as impressive, with a wide soundstage, tight bass, and clean highs. As someone working in film and television, I use this system to review projects before sending them to streaming platforms. It gives me confidence that our audio is tight across all frequencies and plays beautifully on real-world systems. If you're looking for a budget-friendly, high-performance setup, get yourself a Polk system and pair it with a Denon AVR. Trust me, you won’t be disappointed. The smile on my face during the first listen said it all. ... show more
Reviewed in the United States on June 30, 2025 by Brandon C. Brandon C.
    • Great product with great customer service!!!
Style: Hi-Res Height Speaker (XT90)
The speakers perform really well and I’m very happy to finally be watching movies in Dolby Atmos. But, I really want to commend Polk’s customer service. I purchased these speakers in Feb of 2025. They worked great until a couple of months later one of them developed a slight hissing sound. So I called Polk customer service and immediately spoke to an advisor. She dismissed the issue as a driver problem and said they would send me a new one. So on Wednesday May 28th I first called Polk and by Monday June 2, had the new driver in my home. It was an easy install and it sounds great. I am a big fan of Polk speakers. Give them a try. ... show more
Reviewed in the United States on June 10, 2025 by Bill Alanzi
    • pretty good
Style: Surround Speakers w/ 5.25" Woofer - Pair...
I think they sound pretty darn good. They may be 5 stars but I don't really have any better speakers to compare them to. using them for surround sound for some reason it seems very hard to hear what people are saying in movies but Im getting old and def and this is probably more to do with needing a stereo or movies with the dialog boost. I just have to turn it up so loud to hear what people are saying my neighbors call the cops. ... show more
Reviewed in the United States on July 6, 2025 by John Prefect
    • A great speaker at a great price!
Style: Surround Speakers w/ 5.25" Woofer - Pair...
I needed to replace my garage stereo system and didn't want to spend stupid money, I've spent that on higher-end equipment inside the house. I saw these and recalled that I had liked them previously when I could actually hear them demoed, and I bought a pair for my daughter who probably sold them anyway. I took the risk again on them not being able to hear them first and I am very impressed. Nice looking, heavy, great sound...cleaner sound than what they replaced, and can take the volume level that I wanted for the garage. For the price, I don't think you'll find a better speaker. ... show more
Reviewed in the United States on July 7, 2025 by Amazon Customer
    • Terrific bargain
Style: Surround Speakers w/ 5.25" Woofer - Pair...
I have a serious stereo system in our living room. I bought these for a second system that resides in our home office. They are paired with a NAD 40 watt integrated amplifier and a couple of sources. Given their price I found the sound quality rather astounding. Notwithstanding their diminutive size they reproduce a significant amount of bass, did not see that coming. The high end and midrange are quite detailed and they throw a respectable sound stage. If you have a small room or are in need of additional surround sound speakers I would enthusiastically recommend these. ... show more
Reviewed in the United States on May 30, 2025 by Steven E. Schattman

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