Connect with us

Hi, what are you looking for?

New Products

Monoprice Shakes Things Up With Two New Massive THX Subwoofers [Updated]

Monoprice has expanded its Monolith subwoofer range with very powerful THX Ultra certified 13-inch and 16-inch subwoofers.

Monoprice Monolith 13-inch THX Ultra Subwoofer Angle

In order to have a great home theater setup, you need a good subwoofer, and to that end, Monoprice is offering up two that provide more power and low-end bass response than most home theater enthusiasts could possibly hope for.

The two Monolith subwoofers are offered in compact 13-inch and large 16-inch sizes. Let’s take a look at what they offer. 

What Both Subwoofers Have in Common

THX Certification Process

THX Ultra Certification: This means that these subwoofers have been submitted and passed THX standards for application and performance. 

Lots of Power Output: 2,000-watt (RMS)/3,800-watt (Peak) Class D amplifier with DSP (Digital Signal Processing)

Driver Design: A newly developed high-excursion driver capable of handling the above-mentioned power output without distortion. 

Flexible Port Design: The ports can be used in an open, semi-sealed, sealed setup. 

Cabinet Design and Finish: Sleek rounded-edge enclosures with a gray oak finish.

Digging Deeper – 13-inch THX Monolith Subwoofer

Monoprice Monolith 13-inch THX Ultra Subwoofer Front Back
Monoprice Monolith 13-inch

Product Number: 41496 (13-inch model)

Driver Size: 13-inches

Driver Material:  2 layer long fiber pulp/glass fiber cone

Voice Coil: 100mm, with high-temperature aluminum wire and black anodized aluminum bobbin construction.

Advertisement. Scroll to continue reading.

Magnet: 300 oz (that’s 19 pounds!) 

Enclosure: The enclosure is made of High-Density Fiberboard (HDF) that is horizontally and vertically braced. 3 ports are provided on the 13-inch model and 4 ports are provided on the 16-inch model, all of which can be left open, partially, or fully sealed depending on application and preference. 

Monoprice Monolith 13-inch THX Ultra Subwoofer Interior
Frequency Response (-6db)Sealed PortsVented Ports (2)Vented Ports (3)
Extended EQ N/A16 to 200Hz16 to 200Hz
THX EQ20 to 200 Hz19 to 200Hz20 to 200Hz

Harmonic Distortion: Less than 1% from 20-100 Hz (90dB @ 1m reference point)

Variable Level Control: +15/‑20 dB

Reference Level: 100mV @ 40Hz (89dB @ 1m)

Crossover Control: Inline/Bypass variable from 40 to 160 Hz,

Phase Control: 0 to 180 degrees variable (used to match the in/out motion of the subwoofer driver to the rest of the speakers in your system).

Inputs: 2 RCA, 1 XLR

Outputs: 1 XLR

Signal Turn On: Selectable always on or Auto-Detect.

Auto Turn Off Time: 30 minutes

Dimensions: 23.8″ x 20.3″ x 29.1″ (605 x 515 x 740 mm)

Advertisement. Scroll to continue reading.

Weight: 153.2 lbs. (69.5 kg)

Finish: Black Ash

Digging Deeper – 16-inch THX Monolith Subwoofer

Monoprice Monolith 16-inch THX Ultra Subwoofer Front Back
Monoprice Monolith 16-inch

The majority of the specifications for the 16-inch model are identical to the 13-inch model, including the inputs, output, and control options.

Here are the features and specifications that are different in the 16-inch Monolith THX Subwoofer.

Driver Size: 16-inches

Number of Ports: 4 (can be sealed or vented)

Frequency Response (-6db) with Extended EQ Operation

  • Sealed Ports: N/A
  • Vented Ports (1): 17 to 200Hz
  • Vented Ports (2): 14 to 200Hz
  • Vented Ports (3): 14 to 200Hz
  • Vented Ports (4): 16 to 200Hz

Frequency Response (-6db) with THX EQ Operation

  • Sealed Ports: 20 to 200Hz
  • Vented Ports (1): 17 to 200Hz
  • Vented Ports (2): 24 to 200Hz
  • Vented Ports (3): 14 to 200Hz
  • Vented Ports (4): 16 to 200Hz

Dimensions: 25.6″ x 22.0″ x 28.1″ (650 x 560 x 715 mm)

Weight: 171.6 lbs. (77.8 kg)

Finish: Black Ash

Monoprice Monolith 16-inch THX Subwoofer Diagram

Price & Availability

  • The 13-inch Monoprice Monolith THX Ultra Certified Subwoofer (Product Number 41496) is available for $1,599 at Monoprice.com
  • The 16-inch Monoprice Monolith THX Ultra Certified Subwoofer (Product Number 42031) is available for $2,299 at Monoprice.com.

UPDATE 11/3/21: Monoprice adds to its Monolith THX subwoofer line with three models in 10, 12, and 15-inch sizes. Read our full report.

Advertisement. Scroll to continue reading.

Click to comment

Leave a Reply

Your email address will not be published. Required fields are marked *

Advertisement

Latest Products

PSB Speakers iQ2 Colors

New Products

PSB’s iQ Series powered speakers bring BluOS, HDMI eARC, phono, USB C, and subwoofer control to compact stereo systems from $999.

AVID HiFi Pulsus II and Pellar II Phono Preamps AVID HiFi Pulsus II and Pellar II Phono Preamps

New Products

AVID HiFi launches Pulsus II and Pellar II phono preamps with MM and MC support, lower noise, and refined analog performance.

Jean-Marie Reynaud Auralis Loudspeaker Sides Jean-Marie Reynaud Auralis Loudspeaker Sides

Floorstanding Speakers

Jean-Marie Reynaud’s AURALIS flagship pairs a tuned triangular transmission line, 120 mm AST tweeter, and hand-wired crossover for fall 2026.

Weiss DAC204-MK2 DAC Angled Weiss DAC204-MK2 DAC Angled

DACs

Weiss DAC204-MK2 arrives in the U.S. and Canada with an upgraded ESS DAC, improved jitter control, and a refined analog output stage.

2026 Google Home Speaker with Gemini 2026 Google Home Speaker with Gemini

New Products

Can Google Home Speaker with Gemini beat Alexa and Siri? New AI features, 360-degree audio, Matter support, and a costly subscription raise questions.

Kaleidescape Strato K 8K Media Player Kaleidescape Strato K 8K Media Player

Blu-ray, DVD & 4K Media Players

Kaleidescape's new media player supports 8K resolution, but what it's doing with 4K content has us more intrigued.

Gift Ideas?

Amazon Prime Day 2026 Gift Guide

Daily Deals

Amazon Prime Day is a four-day shopping event from June 23-26, 2026 offering the biggest discounts of the year on consumer electronics.

You May Also Like

Audio Cables

What we know so far about the new HDMI 2.2 specifications and whether they really matter.

Bookshelf Speakers

Walking the floor at the world’s largest high end audio show, HIGH END, in Vienna last week, it was easy to get jaded. Hey,...

New Products

Børresen BM2 Bass Module debuts at High End Vienna 2026 with folded dipole bass, analog crossover, and a $10,000 price.

News

SVS Auto EQ brings free app-based bass calibration to select R|Evolution subwoofers, making setup easier for music and home theater systems.

Movies

James Cameron’s latest arrives on 4K UHD and Blu-ray 3D with native 4K, native 3D, and a home theater presentation built to show off...

A/V Receivers & Preamp/Processors

With 16-channels of surround sound processing, the Monoprice Monolith HTP-1 becomes one of the most affordable ways to experience the capabilities of Dirac ART.

Blu-ray, DVD & 4K Media Players

At only $1,995, Strato M is Kaleidescape's lowest cost movie server/player, but there is a catch.

New Products

Can REL’s on-wall Planar PL-1 and PL-2 subwoofers deliver serious bass without putting a big box on the floor?

Advertisement

ecoustics is a hi-fi and music magazine offering product reviews, podcasts, news and advice for aspiring audiophiles, home theater enthusiasts and headphone hipsters. Read more

Copyright © 1999-2026 ecoustics | Disclaimer: We may earn a commission when you buy through links on our site.