THX Sound Systems Dual 18 Theater Subwoofer. MAINLY USED IN CINEMA INSTALLATION. The item "THX Sound Systems Dual 18 Theater Subwoofer Cabinet" is in sale since Friday, January 22, 2021.This item is in the category "Musical Instruments & Gear\Pro Audio Equipment\Speakers". The seller is "djrentalgearnyc" and is located in North Bergen, New Jersey. This item can be shipped to United States.