---
product_id: 356016567
title: "Monolith THX Ultra Certified 2000 Watt Powered Subwoofer - 13-Inch, Massive Output, Low Distortion, for Studio and Home Theater Systems, Black Ash Finish"
brand: "monoprice"
price: "A$2662"
currency: AUD
in_stock: true
reviews_count: 11
url: https://www.desertcart.com.au/products/356016567-monolith-thx-ultra-certified-2000-watt-powered-subwoofer-13-inch
store_origin: AU
region: Australia
---

# THX Ultra Certified 13-inch Custom Driver 2000W RMS Power Monolith THX Ultra Certified 2000 Watt Powered Subwoofer - 13-Inch, Massive Output, Low Distortion, for Studio and Home Theater Systems, Black Ash Finish

**Brand:** monoprice
**Price:** A$2662
**Availability:** ✅ In Stock

## Summary

> 🎬 Feel Every Beat, Own Every Scene

## Quick Answers

- **What is this?** Monolith THX Ultra Certified 2000 Watt Powered Subwoofer - 13-Inch, Massive Output, Low Distortion, for Studio and Home Theater Systems, Black Ash Finish by monoprice
- **How much does it cost?** A$2662 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.au](https://www.desertcart.com.au/products/356016567-monolith-thx-ultra-certified-2000-watt-powered-subwoofer-13-inch)

## 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

- • **THX Ultra Certification:** Guaranteed reference-level performance in large rooms up to 3,000 cubic feet, ensuring cinema-grade sound clarity and volume.
- • **Flexible Acoustic Tuning:** Three-port design with foam plugs lets you customize sealed, semi-sealed, or ported modes to perfectly match your room’s acoustics.
- • **Rock-Solid Build & Design:** Heavy-duty HDF cabinet with massive internal bracing minimizes resonance, delivering pure, distortion-free bass that shakes your space.
- • **Massive 2000W RMS Amplifier:** Unleash thunderous bass with a DSP-controlled powerhouse delivering 3800+ peak watts for flawless low-frequency impact.
- • **Precision 13-Inch Hybrid Woofer:** Engineered from scratch with a unique pulp-fiberglass cone for ultra-low distortion and dynamic, accurate bass response.

## Overview

The Monolith THX Ultra Certified 2000 Watt Powered Subwoofer features a custom 13-inch hybrid driver and a cutting-edge 2000W RMS Class D amplifier, delivering reference-level bass with ultra-low distortion. Designed for large home theaters up to 3,000 cubic feet, its THX Ultra certification guarantees cinematic sound quality. With flexible port tuning and a robust HDF cabinet, it offers precise, powerful bass that transforms movies and music into immersive experiences.

## Description

The Monolith 13" THX Ultra Certified 2000 Watt Powered Subwoofer sets the standard for bass output, low distortion, and reference level bass. A newly designed 13" driver, coupled with a DSP controlled 2000 watt (RMS)/3800+ watt (peak) power amplifier, brings a new dimension in low frequency bass performance to any home theater system.

Review: end-game sub for normal people - I upgraded from a competent sub, an SVS PB1000, which I have been happy with for several years. But it did not really prepare me for how much better a sub that is 3x the price would be. I am sure SVS also has excellent options at this price, and there are lively discussions on audio forums about which brand is better. I can't speak highly enough about SVS, but I went this way and couldn't be happier. I'm not a bass-nut, I prefer extension over mere loudness, but this sub offers both. I listen to movies at a volume that requires moderately raising my voice (but not shouting) to be heard, the room is small-medium (about 14 ft across and long because it sits over a garage). The sub is barely working at all and it absolutely shakes the couch at frequencies I can't hear but can feel. It has transformed movies and music. Impacts and bass sweeps are phenomenal. If you don't have a sub you are likely not aware of the extra octave down there that most speakers "double" (cheating by playing the lowest octave at the 2nd harmonic). No cheating here, just cavity-loosening goodness. The box is huge, I giggle every time I look at it. I paid the desertcart optional in-room delivery fee of $20, and two beefy guys humped the 200lb box up narrow stairs for me. The in-room delivery is transformational, I mean I was researching electric stair-climbing dollies and so forth. Let desertcart do it, highly recommended. I join with the majority opinion that I wish I had done this years ago. If you are contemplating a decent entry-level sub, but can stretch to about 3x that, I promise you you will not be disappointed.
Review: Thunderous! - This monster is so massive and heavy that it wouldn't fit in an desertcart Locker. Bummer. It was delivered by 2 WWF heavyweights who complained bitterly that I'd subjected them to terrible abuse. Thankfully, they were too exhausted to throw me over the ropes, so I was able to lock the door before they recovered. I could only afford this monstrosity when it went on a significant sale. The shipping package is very impressive and the subwoofer's design and build quality is absolutely rock solid, inside and out. But why pick a sub this massive? Unbelievable performance... An astoundingly flat frequency response, all the way down below 20Hz, and incredibly low harmonic distortion, which most subwoofers in this price bracket are unable to attain. I was looking for tight, musically accurate bass (not intrusive and boomy), and this beast delivers at any volume level. Look for the professional review on the Audioholics website. Note, of course, that every room has its own acoustical properties. Sound reflections off walls, floors and ceilings create standing waves, resulting in audible peaks and nulls at any seating position in the room, so a fair amount of work is required to find the best sub placement, main speaker placement, seating position and acoustical treatments to arrive at the flattest and smoothest response throughout the entire audio range. It is advisable to generate frequency sweeps or steps, then measure the response at the listening position. This is far more accurate than tuning by ear. Software and equipment is available to make this process quicker and easier. Room EQ Wizard (REW) is one of the gold standards. Some people will go to great lengths and great expense to aim for perfection, while others will call it good when it sounds good enough to their ears, and that's okay. When properly calibrated to the room and the rest of the sound system, the subwoofer should not overwhelm the audio. It should not be prominent in the soundstage until the soundtrack requires it. Then this sub will blow you away. A loud explosion can truly be FELT as well as heard! The 16Hz tone of the world's biggest pipe organs can be felt as a pressure wave rather than sound, and this sub flexes the windows, easily reproducing such a presence with accuracy. Few subs can reach so low without distortion or boominess.

## Features

- THX Ultra Certified: 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 Ultra Certified products are designed for large rooms, up to 3,000 cubic feet in size, with a 10~12 foot viewing distance from the screen.
- 13 Inch Woofer: The Monolith 13 Inch driver was developed from the ground up, with a design focus on achieving output, accuracy, dynamics, and linearity, while minimizing distortion. It is enclosed in a cabinet made from HDF material, with massive internal bracing, and outfitted with three ports that can use foam plugs to run the subwoofer in sealed, semi sealed, or ported mode, as you see fit.
- 2000 Watt Amplifier: The 2000 watt (RMS) amplifier (3800+ watt peak) 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 8 years. The amplifier has vast reserves
- THX Ultra Certified products bring the cinematic experience to large home theaters, up to 3,000 cubic feet in size, with a 10~12 foot viewing distance from the screen*. *Previously known as Select2.
- 13 Inch Driver: Every part of this driver has been developed from the ground up and customized to deliver high output, low distortion, and accurate bass. Our unique hybrid cone combines long fiber pulp and fiberglass, taking advantage of the pulp's superior stiffness with the additional rigidity and lightweight properties of fiberglass, to deliver a driver of massive durability and excursion. The result is a cone that achieves optimal motion at all frequencies it is asked to produce and beyond.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09DJ3XSHQ |
| Audio Driver Size | 13 Inches |
| Audio Driver Type | Dynamic Driver |
| Best Sellers Rank | #133,090 in Electronics ( See Top 100 in Electronics ) #220 in Home Audio Subwoofers |
| Color | Black |
| Compatible Devices | Television, Projector, Desktop, Laptop |
| Control Method | Remote |
| Customer Package Type | FFP |
| Customer Reviews | 4.0 4.0 out of 5 stars (23) |
| Date First Available | August 24, 2021 |
| Included Components | Powered Subwoofer |
| Indoor/Outdoor Usage | Indoor |
| Is Waterproof | FALSE |
| Item Weight | 100 pounds |
| Item model number | 141496 |
| Manufacturer | Monoprice |
| Material | Plastic, Wood |
| Model Name | 141496 |
| Mounting Type | Ground Mount |
| Number Of Circuits | 1 |
| Number of Items | 1 |
| Number of Power Levels | 1 |
| Power Source | Corded Electric |
| Product Dimensions | 29.1"D x 20.3"W x 23.8"H |
| Recommended Uses For Product | Home Theater |
| Shape | rectangular prism |
| Speaker Size | 13 Inches |
| Speaker Type | Subwoofer |
| Special Feature | Bass Boost, Display, Lightweight |
| Subwoofer Connectivity Technology | Wired |
| Subwoofer Diameter | 13 Inches |
| Surround Sound Channel Configuration | 3.0 |
| UPC | 889028156957 |
| Warranty Type | Limited |
| Water Resistance Level | Not Water Resistant |
| Wireless Communication Technology | No Wireless Communication Technology |
| Woofer Diameter | 13 Inches |

## Product Details

- **Audio Output Mode:** Stereo, Surround
- **Brand:** Monoprice
- **Connectivity Technology:** ['RCA', 'XLR', 'NO']
- **Input Voltage:** 110 Volts
- **Speaker Maximum Output Power:** 2000 Watts

## Images

![Monolith THX Ultra Certified 2000 Watt Powered Subwoofer - 13-Inch, Massive Output, Low Distortion, for Studio and Home Theater Systems, Black Ash Finish - Image 1](https://m.media-amazon.com/images/I/51aVvzOwi8L.jpg)

## Questions & Answers

**Q: Is the input voltage 110v? I live in a country with 240V electricity, will I need a step-down transformer?**
A: Thank you for contacting us. In regards to your inquiry, yes you can use a step-down transformer.

**Q: Would i need to use the xlr for thx or can i use a splitter for the left and right inputs? Thanks**
A: The subwoofer can receive inputs from both XLR and RCA connections. You can split either connection type. THX is a specification that the subwoofer meets.

**Q: Why is there no shipping date when I go to check out?  I would like to purchase but not until I at least have an estimated time of arrival.**
A: Thank you for your question. Please reach out to Amazon customer service to assist with your inquiry.

**Q: I question the overall size of this subwoofer.  Amazon says 20"x20"x20", but the manufacturer states the subwoofer is 29.1" x 20.3" x 23.8"?**
A: Amazon’s measurements are not correct. Definitely  not 20x20x20.

## Customer Reviews

### ⭐⭐⭐⭐⭐ end-game sub for normal people
*by J***Y on December 5, 2025*

I upgraded from a competent sub, an SVS PB1000, which I have been happy with for several years. But it did not really prepare me for how much better a sub that is 3x the price would be. I am sure SVS also has excellent options at this price, and there are lively discussions on audio forums about which brand is better. I can't speak highly enough about SVS, but I went this way and couldn't be happier. I'm not a bass-nut, I prefer extension over mere loudness, but this sub offers both. I listen to movies at a volume that requires moderately raising my voice (but not shouting) to be heard, the room is small-medium (about 14 ft across and long because it sits over a garage). The sub is barely working at all and it absolutely shakes the couch at frequencies I can't hear but can feel. It has transformed movies and music. Impacts and bass sweeps are phenomenal. If you don't have a sub you are likely not aware of the extra octave down there that most speakers "double" (cheating by playing the lowest octave at the 2nd harmonic). No cheating here, just cavity-loosening goodness. The box is huge, I giggle every time I look at it. I paid the Amazon optional in-room delivery fee of $20, and two beefy guys humped the 200lb box up narrow stairs for me. The in-room delivery is transformational, I mean I was researching electric stair-climbing dollies and so forth. Let Amazon do it, highly recommended. I join with the majority opinion that I wish I had done this years ago. If you are contemplating a decent entry-level sub, but can stretch to about 3x that, I promise you you will not be disappointed.

### ⭐⭐⭐⭐⭐ Thunderous!
*by E***T on February 6, 2023*

This monster is so massive and heavy that it wouldn't fit in an Amazon Locker. Bummer. It was delivered by 2 WWF heavyweights who complained bitterly that I'd subjected them to terrible abuse. Thankfully, they were too exhausted to throw me over the ropes, so I was able to lock the door before they recovered. I could only afford this monstrosity when it went on a significant sale. The shipping package is very impressive and the subwoofer's design and build quality is absolutely rock solid, inside and out. But why pick a sub this massive? Unbelievable performance... An astoundingly flat frequency response, all the way down below 20Hz, and incredibly low harmonic distortion, which most subwoofers in this price bracket are unable to attain. I was looking for tight, musically accurate bass (not intrusive and boomy), and this beast delivers at any volume level. Look for the professional review on the Audioholics website. Note, of course, that every room has its own acoustical properties. Sound reflections off walls, floors and ceilings create standing waves, resulting in audible peaks and nulls at any seating position in the room, so a fair amount of work is required to find the best sub placement, main speaker placement, seating position and acoustical treatments to arrive at the flattest and smoothest response throughout the entire audio range. It is advisable to generate frequency sweeps or steps, then measure the response at the listening position. This is far more accurate than tuning by ear. Software and equipment is available to make this process quicker and easier. Room EQ Wizard (REW) is one of the gold standards. Some people will go to great lengths and great expense to aim for perfection, while others will call it good when it sounds good enough to their ears, and that's okay. When properly calibrated to the room and the rest of the sound system, the subwoofer should not overwhelm the audio. It should not be prominent in the soundstage until the soundtrack requires it. Then this sub will blow you away. A loud explosion can truly be FELT as well as heard! The 16Hz tone of the world's biggest pipe organs can be felt as a pressure wave rather than sound, and this sub flexes the windows, easily reproducing such a presence with accuracy. Few subs can reach so low without distortion or boominess.

### ⭐⭐⭐ Underwhelming
*by M***O on July 29, 2025*

Underwhelming. Compared to my HSU 15" subwoofer that's only 600 watt RMS, this thing couldn't hold a candle to it. Volume on highest setting too. I was so disappointed.

## Frequently Bought Together

- Monolith THX Ultra Certified 2000 Watt Powered Subwoofer - 13-Inch, Massive Output, Low Distortion, for Studio and Home Theater Systems, Black Ash Finish
- FosPower Banana Plugs 12 Pairs / 24 pcs, Closed Screw 24K Gold Plated Speaker Plug Connectors for Speaker Wire, Wall Plate, Home Theater, Audio/Video Receiver, Amplifiers and Sound Systems
- SVS SoundPath Subwoofer Isolation System, 4-Pack

---

## Why Shop on Desertcart?

- 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016
- 🌍 **Shop Globally** — Access 737+ million products across 21 categories
- 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price
- 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members)
- 🔒 **Secure Payments** — Trusted payment options with buyer protection
- ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews

**Shop now:** [https://www.desertcart.com.au/products/356016567-monolith-thx-ultra-certified-2000-watt-powered-subwoofer-13-inch](https://www.desertcart.com.au/products/356016567-monolith-thx-ultra-certified-2000-watt-powered-subwoofer-13-inch)

---

*Product available on Desertcart Australia*
*Store origin: AU*
*Last updated: 2026-01-22*