---
product_id: 382027187
title: "Polk Monitor XT12 Powered Sub - 12\" Balanced Woofer & 100W Class A/B Amplifier, Low-Resonance MDF Cabinet & Removable Grille, Dolby Atmos & DTS:X Compatible, Home Theater Subwoofers, Midnight Black"
brand: "polk audio"
price: "$1218.09"
currency: USD
in_stock: true
reviews_count: 11
category: "Polk Audio"
url: https://www.desertcart.us/products/382027187-polk-monitor-xt12-powered-sub-12-balanced-woofer-and-100w
store_origin: US
region: United States of America
---

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

**Brand:** polk audio
**Price:** $1218.09
**Availability:** ✅ In Stock

## Summary

> 🎶 Feel Every Beat, Own Every Moment

## Quick Answers

- **What is this?** Polk Monitor XT12 Powered Sub - 12" Balanced Woofer & 100W Class A/B Amplifier, Low-Resonance MDF Cabinet & Removable Grille, Dolby Atmos & DTS:X Compatible, Home Theater Subwoofers, Midnight Black by polk audio
- **How much does it cost?** $1218.09 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/382027187-polk-monitor-xt12-powered-sub-12-balanced-woofer-and-100w)

## Best For

- polk audio enthusiasts

## Why This Product

- Trusted polk audio brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Expandable Bass Power:** Add a second XT12 subwoofer for uniform, rumbling bass throughout your space.
- • **Deep, Room-Shaking Bass:** 12" long-throw woofer delivers powerful bass down to 24Hz for immersive sound.
- • **Sleek, Low-Resonance Design:** Rigid MDF cabinet with removable grille minimizes distortion and sonic interference.
- • **Precision-Tuned Audio Control:** Adjust volume, crossover (80-160Hz), and phase polarity for perfect room integration.
- • **Seamless Home Theater Upgrade:** Compatible with Dolby Atmos & DTS:X for next-level surround sound experiences.

## Overview

The Polk Monitor XT12 is a premium 12-inch powered subwoofer featuring a dynamically balanced woofer and a 100W Class A/B amplifier. Designed with a low-resonance MDF cabinet and precision controls, it delivers deep, distortion-free bass down to 24Hz. Compatible with Dolby Atmos and DTS:X, it seamlessly integrates into modern home theater setups. Perfect for audiophiles and gamers seeking immersive sound, it also supports dual-subwoofer setups for enhanced bass coverage.

## Description

The Polk Monitor XT12 powered subwoofer is outfitted with a 12” Dynamic Balanced Woofer and 100 W peak Class A/B amplification; delivering loud, low, effortless bass. Audiophiles, homeowners, or anyone who is a gamer can enjoy movies, music, and gaming; with more impact, amazing speed, and control even at 24 Hz. Built-in controls for volume, variable crossover (80–160 Hz), and phase polarity (0/180) allow quick room tuning. The home audio subwoofers have a rigid, low-resonance cabinet that keeps each note clean; while the driver moves ample air for truly deep bass. Easily integrated into any home theater or music listening environment. Featuring new woofer, amplifier, and cabinet designs—the MXT12 12 inch subwoofers fulfill the Polk promise of great sound for all. Add another, same-model subwoofer to your setup to improve realism, smooth peaks and dips; deliver even bass for every movie and song.

Review: Looks good and great features/sound for the price - This sub is great for the price. Get it on black friday and save some money. Most of the equivalent subs of this size are 300+ bucks. A little misleading though, measuring from the edge of the rubber from one side to the other side of the speaker is about 8 inches not including the 1/4 in area for the screw holes. So to me this is more of a 8” sub and overall is the size of yamahas 8” sub. Not complaining though, i do like the more compact size as subs used to have huge heavy boxes in the past. This one says 23lbs so not bad overall. Its your typical black vinyl veneer look and comes with power cord and instructions. Basic controls are power switch, phase switch, volume, low pass filter and the lfe or stereo rca jack inputs. Most people will like the phase switch at 0 as it matches their other speakers phase, but i say try both ways and see what you like. Thats it and its simple and perfect for entry level sound systems. You will need a sub cable which is a single rca male to rca male. Im using it for my computer and have a douk ampapa 300w amp with upgraded muses 02 opamps and sony cs5s that i purchased a few black fridays ago at a great price. The ampapa amp has a mini 3.5 jack output and using the polk lfe rca input. The polk has an adjustable low band filter so will cross this sub over at about 80hz as to me thats the cleanest sounding xover point. Anyways, overall if you want a lower cost decent sound for your stereo or even computer or tv, this setup is great for a small to medium size room. Review for height monitor x190, got these on black friday as well. I have 6 wharfedale diamond bookshelfs and center with a sub for my main tv hooked up to my onkyo rz50. It has outs for atmos height so after reading reviews got this on black friday sales. Overall a very simple maybe 3 inch full range driver in an angled mdf box. It has a nice grayish color grill and speaker posts that accept wire or banana plugs so simple install. I need to se up my dirac live settings then will update review. Other then that. Speaker looks fine in quality but super simple design so get them on sale.
Review: Great Speakers For The Price - These are my second set of Polk "Tower" speakers. The first set are multiple 6 1/2" drivers which I use for home theater front surrounds. Look: These are high quality. They sound fantastic. But (IMHO) they are basically large bookshelf speakers. In a small room, they have great definition and I think the pair of passive radiators improve bass immensely compared to a single ported enclosure woofer/driver. But look, a large room and loud volumes, need way more than a 6 1/2" speaker. It isn't a quality or spec issue - it's physics. Speakers move air and the amount of air they can move is directly related to speaker size. For the money, Polk speakers are a value. However, choose according to room size and intended listening levels. Small speakers (Under 8") work well in small rooms. Small speakers work for quiet volume levels. In terms of quality and fit for purpose, would buy again. - - - Having said all of this, would these speakers and a decent Center Channel Speaker be a Home Theater improvement over a sound bar. Absolutely.

## Features

- POWERFUL SUB FOR EFFORTLESS BASS - The Polk Monitor XT12 Subwoofer and amp package features a long-throw, high excursion 12" Dynamically Balanced Woofer powered by a 100W Class A/B Amplifier; delivering bass down to 24Hz for music, movies, games
- PREMIUM BUILD QUALITY AND MODERN DESIGN - An upgrade to the acclaimed Monitor series, the Polk Monitor XT series features innovations in affordable, great sounding speakers; their stylish design blends with any home décor
- DISTORTION-FREE AUDIO - The MXT12 12 inch subwoofer is housed inside a rigid, critically braced MDF cabinet with a removable, precision-fit grille that isolates woofer sound; minimizing resonances and sonic interference for pure sound
- VERSATILE COMPATIBILITY & CONVENIENT CONTROLS - This Polk Audio subwoofer is compatible with the latest Dolby Atmos & DTS:X AV receivers; fine tune MXT12 with volume, variable crossover (80-160Hz) and phase polarity (0/180) control
- NUMEROUS CONNECTION OPTIONS - The MXT12 subwoofer 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 ensure seamless speaker-to-speaker blending with other Monitor XT speakers. Add another same-model Polk subwoofer for more bass and uniform low frequencies throughout the room

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09BMX6GPT |
| Audio Driver Size | 12 Inches |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #3,356 in Electronics ( See Top 100 in Electronics ) #31 in Home Audio Subwoofers |
| Color | Black |
| Compatible Devices | Home Theater |
| Control Method | Remote |
| Customer Reviews | 4.6 4.6 out of 5 stars (3,850) |
| Date First Available | August 24, 2021 |
| Impedance | 4 Ohms |
| Included Components | Speaker |
| Is Discontinued By Manufacturer | No |
| Is Waterproof | False |
| Item Weight | 39 pounds |
| Item model number | MXT12 |
| Manufacturer | Polk |
| Material | Engineered Wood |
| Model Name | MXT12 |
| Mounting Type | Floor Standing |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Product Dimensions | 16"D x 18"W x 16"H |
| Recommended Uses For Product | For Surround Sound Systems |
| Set Name | Monitor XT |
| Shape | rectangular prism |
| Speaker Size | 12 Inches |
| Speaker Type | Subwoofer |
| Special Feature | Dolby Enabled |
| Specific Uses For Product | Home Entertainment Systems, Surround Sound Setups |
| Style | 12" Subwoofer (XT12) |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 12 Inches |
| Surround Sound Channel Configuration | 5.1 |
| UPC | 747192135058 |
| Unit Count | 1.0 Count |
| Warranty Type | Full |
| Water Resistance Level | Not Water Resistant |
| Wireless Communication Technology | No Wireless Communication Technology |
| Woofer Diameter | 12 Inches |

## Product Details

- **Audio Output Mode:** Surround
- **Brand:** Polk Audio
- **Connectivity Technology:** RCA
- **Frequency Response:** 40 KHz
- **Speaker Maximum Output Power:** 100 Watts

## Images

![Polk Monitor XT12 Powered Sub - 12" Balanced Woofer & 100W Class A/B Amplifier, Low-Resonance MDF Cabinet & Removable Grille, Dolby Atmos & DTS:X Compatible, Home Theater Subwoofers, Midnight Black - Image 1](https://m.media-amazon.com/images/I/51k9nFdynKL.jpg)

## Available Options

This product comes in different **Size** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Looks good and great features/sound for the price
*by M***O on November 18, 2025*

This sub is great for the price. Get it on black friday and save some money. Most of the equivalent subs of this size are 300+ bucks. A little misleading though, measuring from the edge of the rubber from one side to the other side of the speaker is about 8 inches not including the 1/4 in area for the screw holes. So to me this is more of a 8” sub and overall is the size of yamahas 8” sub. Not complaining though, i do like the more compact size as subs used to have huge heavy boxes in the past. This one says 23lbs so not bad overall. Its your typical black vinyl veneer look and comes with power cord and instructions. Basic controls are power switch, phase switch, volume, low pass filter and the lfe or stereo rca jack inputs. Most people will like the phase switch at 0 as it matches their other speakers phase, but i say try both ways and see what you like. Thats it and its simple and perfect for entry level sound systems. You will need a sub cable which is a single rca male to rca male. Im using it for my computer and have a douk ampapa 300w amp with upgraded muses 02 opamps and sony cs5s that i purchased a few black fridays ago at a great price. The ampapa amp has a mini 3.5 jack output and using the polk lfe rca input. The polk has an adjustable low band filter so will cross this sub over at about 80hz as to me thats the cleanest sounding xover point. Anyways, overall if you want a lower cost decent sound for your stereo or even computer or tv, this setup is great for a small to medium size room. Review for height monitor x190, got these on black friday as well. I have 6 wharfedale diamond bookshelfs and center with a sub for my main tv hooked up to my onkyo rz50. It has outs for atmos height so after reading reviews got this on black friday sales. Overall a very simple maybe 3 inch full range driver in an angled mdf box. It has a nice grayish color grill and speaker posts that accept wire or banana plugs so simple install. I need to se up my dirac live settings then will update review. Other then that. Speaker looks fine in quality but super simple design so get them on sale.

### ⭐⭐⭐⭐⭐ Great Speakers For The Price
*by A***Y on December 27, 2025*

These are my second set of Polk "Tower" speakers. The first set are multiple 6 1/2" drivers which I use for home theater front surrounds. Look: These are high quality. They sound fantastic. But (IMHO) they are basically large bookshelf speakers. In a small room, they have great definition and I think the pair of passive radiators improve bass immensely compared to a single ported enclosure woofer/driver. But look, a large room and loud volumes, need way more than a 6 1/2" speaker. It isn't a quality or spec issue - it's physics. Speakers move air and the amount of air they can move is directly related to speaker size. For the money, Polk speakers are a value. However, choose according to room size and intended listening levels. Small speakers (Under 8") work well in small rooms. Small speakers work for quiet volume levels. In terms of quality and fit for purpose, would buy again. - - - Having said all of this, would these speakers and a decent Center Channel Speaker be a Home Theater improvement over a sound bar. Absolutely.

### ⭐⭐⭐⭐⭐ Resonable priced clarity
*by S***R on February 4, 2026*

First impression Sounds smooth and full, paired with a Yamaha As 501 amp. Tons of low end and clarity. Feed them clean and they will perform. Plenty of volume to fill a 14x14 room. Sound smooth and pleasing to my ears without being shrill .

## Frequently Bought Together

- 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
- Amazon Basics Speaker Cable, Easy Assembly, 16-Gauge, Bronze, 100 ft
- FosPower Banana Plugs 10 Pairs / 20 pcs, Closed Screw 24K Gold Plated Speaker Plug Connectors for Speaker Wire, Wall Plate, Home Theater, Audio/Video Receiver, Amplifiers and Sound Systems

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-24*