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

Revel PerForma4 F346 Floorstanding Loudspeaker Grilles On and Off in Natural and Black Walnut

Floorstanding Speakers

Revel Performa4 loudspeakers feature DCC drivers and an Acoustic Lens waveguide for both hi-fi and home theater systems with matching subwoofer and center channel.

2026 Samsung The Frame Pro vs. The Frame 4K Art TVs 2026 Samsung The Frame Pro vs. The Frame 4K Art TVs

New Products

Samsung’s 2026 The Frame and Frame Pro TVs blend 4K performance with Art Mode, matte display, and cleaner wireless setup for a true gallery...

Cayin N8iii DAP Angle Side Buttons Cayin N8iii DAP Angle Side Buttons

DAPs

Cayin N8iii launches at $3,999 with tube modes, AKM DAC, up to 1.285 watts of output, and a 13500mAh battery, but is it enough...

Samsung 2026 OLED TVs Samsung 2026 OLED TVs

New Products

This year, LG is offering its QD-OLED TV in two strikingly different designs. Which one would you pick?

Bang & Olufsen Beolab 90 Zenith and Monarch Loudspeakers Bang & Olufsen Beolab 90 Zenith and Monarch Loudspeakers

Floorstanding Speakers

Bang & Olufsen's Beolab 90 Zenith and Monarch Editions look like they escaped a Cylon basestar, with extreme design and six figure pricing to...

Kaleidescape Terra Prime Movie Server Kaleidescape Terra Prime Movie Server

Blu-ray, DVD & 4K Media Players

Kaleidescape’s $34,995 Terra Prime 120TB Movie Server stores 2,000 4K movies, and downloads in minutes over 2.5G Ethernet with lossless audio.

Gift Ideas?

Kaleidescape Paradise Theater Ultimate Man Cave

Gift Guides

Building the ultimate man cave in 2026? Discover the best home theater, hi-fi, and tech upgrades that deliver real performance, not hype.

You May Also Like

Gift Guides

Building the ultimate man cave in 2026? Discover the best home theater, hi-fi, and tech upgrades that deliver real performance, not hype.

Music

Can Yes Tales From Topographic Oceans Super Deluxe Edition with Atmos mixes and live recordings finally settle the prog rock debate?

Articles

Forget sound bars and souped up TV speakers, a real Dolby Atmos immersive surround sound system is more affordable than you might think.

Daily Deals

Why bother with under-performing soundbar-based surround sound systems when you can pick up this separates-based complete home theater for under $1,200?

New Products

At $2,749, can PS Audio’s Foundry F12 justify its price against SVS, REL, and MartinLogan by delivering cleaner, more controlled bass where it actually...

New Products

Just days after CES 2026, SVS’s 3000 R|Evolution subwoofers are now available—but do they raise the bar for output and control?

New Products

Brane Audio debuts RAD2 at CES 2026, previewing the Party Pro prototype and a radical new approach to deep bass that could reshape portable...

New Products

Pro Audio Technology rolls out V2 speaker upgrades with improved drivers, DSP tuning, and lower noise for elite home theater performance.

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.