
The Monolith THX Certified 8" 150-watt Powered Subwoofer features an 8" downfiring cone in a vented MDF enclosure that is tuned to easily blend with the Monolith THX Certified Compact Satellite Speakers to present a seamless frequency response from 30Hz ~ 20kHz, with deep and powerful bass. It is THX Certified, ensuring an accurate and powerful listening experience as accurate to the source as possible. The Monolith THX® Certified Subwoofer is quick and easy to setup - simply connect it to any multichannel receiver or amplifier and pair it with capable satellite speakers for a fantastic cinema or gaming experience.
- THX® Certified
- 8" Powered Subwoofer
- 150-watt (RMS) Claridy DSP amplifier
- Compact Form Factor
- MDF Enclosure
- Easy to Connect

The Monolith THX Certified 8" 150-watt Powered Subwoofer is a compact, but mighty downfiring, ported subwoofer. Tuned in conjunction with the THX® Certified Satellite Speakers, the sub/sat combination reproduces a flat and seamless frequency response from 30Hz ~ 20kHz. It features three EQ controls, allowing you to dial in the best bass response for your room, with the THX® EQ having the lowest distortion and cleanest sound.

For almost 40 years, THX has set the standard for the audio and visual fidelity of entertainment experiences. THX Certification is a globally recognized assurance of uncompromising quality, consistency and performance. We blend art, technology, and the dynamics of real world listening and viewing environments to ensure products deliver the artist's true vision.
THX Certification
Using industry standards and a proprietary testing methodology, THX engineers evaluate and certify the audio and visual fidelity of consumer electronics to ensure they deliver the optimal entertainment experience. In cinemas, at home, and on-the-go, your entertainment comes alive with THX.
Certification Process

What We Test
THX engineers perform hundreds of audio and video performance and quality assurance tests before a product is confirmed to be THX Certified.
AUDIO: We analyze everything from output levels, frequency response, signal-to-noise, distortion and bass management to recreate high impact cinema sound and best-in-class audio fidelity.
VIDEO: We test color accuracy, panel performance, and video processing, to confirm a display delivers accurate images and pristine video performance in every frame.
Why Certification Matters
The THX Certified benchmark offers consumers the assurance of superior audio or visual performance from consumer electronics.
- THX offers the industry's most rigorous testing process
- THX guarantees high performance and premium build quality
