![Amazon.com: Monolith THX Certified 8in 150-watt Powered Subwoofer, Deep and Powerful Bass, Compact Design, Quick and Easy to Setup, for Home Theater or Gaming Systems : Electronics Amazon.com: Monolith THX Certified 8in 150-watt Powered Subwoofer, Deep and Powerful Bass, Compact Design, Quick and Easy to Setup, for Home Theater or Gaming Systems : Electronics](https://m.media-amazon.com/images/I/51iS3TGuiOL.jpg)
Amazon.com: Monolith THX Certified 8in 150-watt Powered Subwoofer, Deep and Powerful Bass, Compact Design, Quick and Easy to Setup, for Home Theater or Gaming Systems : Electronics
![3x JBL 4645B Subwoofer 18 inches.2242H drivers 50Hz to 500Hz. 800Watt Peak 1600Watt.8 ohms. THX certified. 50% Cheaper. | Reverb 3x JBL 4645B Subwoofer 18 inches.2242H drivers 50Hz to 500Hz. 800Watt Peak 1600Watt.8 ohms. THX certified. 50% Cheaper. | Reverb](https://images.reverb.com/image/upload/s--1603avcr--/a_0/f_auto,t_large/v1682256922/k7kr9lj8whgettoajqvw.jpg)
3x JBL 4645B Subwoofer 18 inches.2242H drivers 50Hz to 500Hz. 800Watt Peak 1600Watt.8 ohms. THX certified. 50% Cheaper. | Reverb
![Amazon.com: Monolith THX-365C Ultra Center Channel Speaker (Each) THX Certified, Premium Drivers, Premium Built Cabinet : Electronics Amazon.com: Monolith THX-365C Ultra Center Channel Speaker (Each) THX Certified, Premium Drivers, Premium Built Cabinet : Electronics](https://m.media-amazon.com/images/I/61ToJF83XyL._AC_UF894,1000_QL80_.jpg)
Amazon.com: Monolith THX-365C Ultra Center Channel Speaker (Each) THX Certified, Premium Drivers, Premium Built Cabinet : Electronics
JBL THX Certified Home Theater Speakers ( 5 Channels ), Audio, Soundbars, Speakers & Amplifiers on Carousell
![Excellent deal - more than 60% cheaper - New and boxed - JBL 3635 Superb Subwoofer System (18 inches). THX certified. | Reverb UK Excellent deal - more than 60% cheaper - New and boxed - JBL 3635 Superb Subwoofer System (18 inches). THX certified. | Reverb UK](https://images.reverb.com/image/upload/s--VFfxwz7b--/a_0/t_card-square/v1682858864/adggxsmtpobpcfwwbgv1.jpg)
Excellent deal - more than 60% cheaper - New and boxed - JBL 3635 Superb Subwoofer System (18 inches). THX certified. | Reverb UK
![Amazon.com: Monolith M518HT THX Certified 5.1 Channel Home Theater System, 150‑Watt Powered Subwoofer, for Home Audio System or Gaming Systems, USB, HDTV Ultra HD, Home DVD, FM Radio : Electronics Amazon.com: Monolith M518HT THX Certified 5.1 Channel Home Theater System, 150‑Watt Powered Subwoofer, for Home Audio System or Gaming Systems, USB, HDTV Ultra HD, Home DVD, FM Radio : Electronics](https://images-na.ssl-images-amazon.com/images/I/41NTFHWtCqL._AC_UL600_SR600,600_.jpg)