---
product_id: 393709624
title: "Monolith M-12 V2 12-Inch THX Certified Ultra 500 Watt Powered Subwoofer - Low Distortion, High Power Output, Vented HDF Cabinet, RCA and XLR Inputs, for Home Theater Systems, Black Ash Finish"
brand: "monoprice"
price: "8812161₫"
currency: VND
in_stock: false
reviews_count: 7
url: https://www.desertcart.vn/products/393709624-monolith-m-12-v2-12-inch-thx-certified-ultra-500
store_origin: VN
region: Vietnam
---

# 500W Class D amplifier 12-inch precision woofer HDF braced cabinet Monolith M-12 V2 12-Inch THX Certified Ultra 500 Watt Powered Subwoofer - Low Distortion, High Power Output, Vented HDF Cabinet, RCA and XLR Inputs, for Home Theater Systems, Black Ash Finish

**Brand:** monoprice
**Price:** 8812161₫
**Availability:** ❌ Out of Stock

## Summary

> 🎬 Feel the cinema-grade bass that your home theater deserves!

## Quick Answers

- **What is this?** Monolith M-12 V2 12-Inch THX Certified Ultra 500 Watt Powered Subwoofer - Low Distortion, High Power Output, Vented HDF Cabinet, RCA and XLR Inputs, for Home Theater Systems, Black Ash Finish by monoprice
- **How much does it cost?** 8812161₫ with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.vn](https://www.desertcart.vn/products/393709624-monolith-m-12-v2-12-inch-thx-certified-ultra-500)

## Best For

- monoprice enthusiasts

## Why This Product

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

## Key Features

- • **Sleek Modern Design:** Rounded edges and inset subwoofer create a refined look that fits upscale home theaters.
- • **Massive 500W Amplifier:** Texas Instruments DSP-driven Class D amp with real-time monitoring for flawless power delivery.
- • **Rock-Solid HDF Cabinet:** High-density fiberboard with internal bracing eliminates resonance for pure, uncolored bass.
- • **Precision 12-Inch Woofer:** Custom-designed driver ensures deep, accurate bass with minimal distortion—feel every nuance.
- • **THX Ultra Certified Powerhouse:** Engineered to deliver distortion-free bass at cinema-level volumes for rooms up to 3,000 cu ft.

## Overview

The Monolith M-12 V2 is a THX Certified Ultra 12-inch powered subwoofer delivering 500 watts RMS of distortion-free bass. Built with a custom woofer, a high-efficiency Class D amplifier featuring advanced DSP, and a sonically inert HDF cabinet with internal bracing, it’s engineered for large rooms up to 3,000 cubic feet. Its sleek black ash finish and rounded edges make it a stylish yet powerful addition to any premium home theater setup.

## Description

The Monolith THX certified subwoofer sets the standard for bass output, low distortion, and affordability. With chest thumping bass that plays down to well under 20Hz, the Monolith subwoofer unleashes cinema level volume, with the ability to convey and articulate the subtle nuances of music. The Monolith subwoofer cabinets have been redesigned for a sleeker look, rounded edges, and an inset subwoofer for a better aesthetic appearance.

Review: Loving my Monolith! - Love this sub!!! I've had mine for about 3 years now and she's still kicking ass and have had zero issues. I've had some Acoustech and Klipsch subs before this one and they were all loud and booming bass... This guy just hits different and in a good way. Much tighter bass and definitely hits lower. Some movie soundtracks the house will rattle from the bass, but it is inaudible to my ears. Is tad on the larger size, but absolutely worth it, I mean with a name like Monolith I'd be rather disappointed to open up the box and find a little wimpy HTIB sub. Grab one if you can and crank it up!
Review: This is the M1A1 tank of subs. - Build quality, check. Sound quality, check. This Monolith subwoofer is a behemoth. Set up of sub easy breezy. I am very pleased with my purchase. I received the newest version with rounded edges vs. being chamfered. The rounded edges are more streamlined in appearance. The only caveat that I find disconcerting is that you cannot register the subwoofer product w/ Monoprice. Most consumer purchased products offer the ability to register that product w/ the manufacturer. That aside, this is the nicest sub I've owned, and I've been doing home theater since the 80's. This sub replaces a Velodyne 12 inch subwoofer. Velodyne is a well made, well known brand that had subsonic lows.

## Features

- THX Certified Ultra: THX engineers completed hundreds of different scientific tests to ensure the highest audio performance possible. The tests ensure the speaker can reach the high volumes necessary to achieve THX Reference Level without creating audible distortion or artifacts. THX Certified Ultra products are for large sized rooms, up to 3,000 cubic feet in size, with a 10‑12 foot viewing distance from the screen.
- 12" Woofer: The Monolith 12" driver was developed from the ground up, with a design focus on achieving output, accuracy, dynamics, and linearity, while minimizing distortion. Enclosed in a cabinet made from HDF material, massive internal bracing, and outfitted with two ports that can utilize foam plugs to run the subwoofer in a sealed mode.
- 500 Watt Amplifier: The 500W RMS amplifier is built around a Texas Instruments 48‑bit data path (with 28‑bit filter coefficients) and DSP engine. Each amplifier's transfer function, power output limiting, and thermal protection are monitored to the millisecond and are customized for each individual driver. The high efficiency Class D amplifier modules are based on a proven topology that has been continuously refined over the past 4 years. The amplifier has vast reserves of power for highly
- Cabinet and Internal Bracing: HDF (High Density Fiberboard), not MDF, was utilized resulting in a sonically inert cabinet. Internal bracing has been strategically placed to increase overall cabinet strength and limit unwanted panel vibrations that would cause discoloration and distortion. The strong cabinet and bracing combine to ensure you hear massive amounts of bass, not cabinet resonances.
- All Amp'd Up: The Monolith subwoofer amplifier has an extraordinarily high power output of 500 watts RMS (900 watts peak), which can deliver massive amounts of power when needed. Each Class D amplifier is built around a Texas Instruments 48 bit data path (with 28 bit filter coefficients) DSP engine, allowing virtually unlimited design flexibility with the assurance of no signal degradation.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09LSSG9LP |
| Additional Features | Bass Boost, Display |
| Audio Driver Size | 12 Inches |
| Audio Driver Type | Dynamic Driver |
| Audio Output Mode | Stereo |
| Best Sellers Rank | #285,381 in Electronics ( See Top 100 in Electronics ) #444 in Home Audio Subwoofers |
| Brand | Monoprice |
| Built-In Media | Powered Subwoofer |
| Color | Black |
| Compatible Devices | Laptop, Desktop, Television, Home Theater |
| Compatible with Vehicle Type | Car |
| Connectivity Protocol | XLR |
| Connectivity Technology | RCA , XLR |
| Control Method | Touch |
| Controller Type | Corded Electric |
| Customer Reviews | 3.9 out of 5 stars 15 Reviews |
| Enclosure Material | HDF (High Density Fiberboard) |
| Is Waterproof | FALSE |
| Item Dimensions D x W x H | 16.7"D x 24.8"W x 22.8"H |
| MP3 player | No |
| Manufacturer | Monoprice |
| Material | HDF (High Density Fiberboard) |
| Model Name | 142847 |
| Model Number | 142847 |
| Mounting Type | Ground Mount |
| Number Of Circuits | 1 |
| Number of Audio Channels | 2.0 |
| Number of Items | 1 |
| Power Source | Corded Electric |
| Processor Count | 1 |
| Series Number | 142847 |
| Signal-to-Noise Ratio | 90 dB |
| Speaker Maximum Output Power | 500 Watts |
| Speaker Size | 12 Inches |
| Speaker Type | Subwoofer |
| Specific Uses For Product | Home Theatre |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 12 Inches |
| UPC | 889028170403 |
| Unit Count | 1.0 Count |
| Warranty Description | 5 |
| Warranty Type | Limited |
| Water Resistance Level | Not Water Resistant |
| Wireless Technology | No Wireless Communication Technology |
| Woofer Diameter | 12 Inches |

## Product Details

- **Audio Output Mode:** Stereo
- **Brand:** Monoprice
- **Connectivity Technology:** RCA, XLR
- **Mounting Type:** Ground Mount
- **Speaker Maximum Output Power:** 500 Watts

## Images

![Monolith M-12 V2 12-Inch THX Certified Ultra 500 Watt Powered Subwoofer - Low Distortion, High Power Output, Vented HDF Cabinet, RCA and XLR Inputs, for Home Theater Systems, Black Ash Finish - Image 1](https://m.media-amazon.com/images/I/51BhlLAtWKL.jpg)
![Monolith M-12 V2 12-Inch THX Certified Ultra 500 Watt Powered Subwoofer - Low Distortion, High Power Output, Vented HDF Cabinet, RCA and XLR Inputs, for Home Theater Systems, Black Ash Finish - Image 2](https://m.media-amazon.com/images/I/612nLGE5NvL.jpg)
![Monolith M-12 V2 12-Inch THX Certified Ultra 500 Watt Powered Subwoofer - Low Distortion, High Power Output, Vented HDF Cabinet, RCA and XLR Inputs, for Home Theater Systems, Black Ash Finish - Image 3](https://m.media-amazon.com/images/I/51ieB1z5pOL.jpg)
![Monolith M-12 V2 12-Inch THX Certified Ultra 500 Watt Powered Subwoofer - Low Distortion, High Power Output, Vented HDF Cabinet, RCA and XLR Inputs, for Home Theater Systems, Black Ash Finish - Image 4](https://m.media-amazon.com/images/I/61-bzBWQMdL.jpg)
![Monolith M-12 V2 12-Inch THX Certified Ultra 500 Watt Powered Subwoofer - Low Distortion, High Power Output, Vented HDF Cabinet, RCA and XLR Inputs, for Home Theater Systems, Black Ash Finish - Image 5](https://m.media-amazon.com/images/I/61qOpQh9AFL.jpg)

## Questions & Answers

**Q: it is only $779+free shipping on the manufacturer's website. Why $1090 on Amazon?**
A: It varies wildly due to demand and Amazon pricing algorithm, use camel to see price history, I got it for under $650 here

**Q: can use 220v voltage ?**
A: Thank you for your inquiry. As long as there is a step down voltage transformer it should work.

**Q: Os it normal for the Woofer to be making a "morse code" type hum?**
A: Thank you for contacting us. In regards to your inquiry, the humming sound only happens if there are electronic devices near the subwoofer.

**Q: Is this one or two?**
A: Thank you for contacting us. Regarding your inquiry, this is only for one subwoofer.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Loving my Monolith!
*by J***H on January 7, 2026*

Love this sub!!! I've had mine for about 3 years now and she's still kicking ass and have had zero issues. I've had some Acoustech and Klipsch subs before this one and they were all loud and booming bass... This guy just hits different and in a good way. Much tighter bass and definitely hits lower. Some movie soundtracks the house will rattle from the bass, but it is inaudible to my ears. Is tad on the larger size, but absolutely worth it, I mean with a name like Monolith I'd be rather disappointed to open up the box and find a little wimpy HTIB sub. Grab one if you can and crank it up!

### ⭐⭐⭐⭐⭐ This is the M1A1 tank of subs.
*by R***L on March 28, 2025*

Build quality, check. Sound quality, check. This Monolith subwoofer is a behemoth. Set up of sub easy breezy. I am very pleased with my purchase. I received the newest version with rounded edges vs. being chamfered. The rounded edges are more streamlined in appearance. The only caveat that I find disconcerting is that you cannot register the subwoofer product w/ Monoprice. Most consumer purchased products offer the ability to register that product w/ the manufacturer. That aside, this is the nicest sub I've owned, and I've been doing home theater since the 80's. This sub replaces a Velodyne 12 inch subwoofer. Velodyne is a well made, well known brand that had subsonic lows.

### ⭐⭐⭐⭐⭐ Heavy, large and sounds amazing
*by S***E on November 7, 2022*

I replaced a cheap Dayton Audio 12" ported subwoofer with this recently and the difference is night and day. First off, this thing is very heavy and huge so make sure you have measured the space you want to put it in. Once I found the optimal location, I was blown away. It shakes my walls during movies and I can feel it in my couch. I was contemplating this or the SVS PB 12", but I went with this when it was on sale and I am not disappointed. I plan on adding a 2nd one when it goes on sale again.

## Frequently Bought Together

- Monolith M-12 V2 12-Inch THX Certified Ultra 500 Watt Powered Subwoofer - Low Distortion, High Power Output, Vented HDF Cabinet, RCA and XLR Inputs, for Home Theater Systems, Black Ash Finish
- Amazon Basics 1 RCA Audio Cable for Subwoofer, Amplifiers, Active Speakers with Gold-Plated Plugs, Black, 35 feet
- 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 Vietnam*
*Store origin: VN*
*Last updated: 2026-05-23*