Klipsch KPT-684-SW

DUAL 18” DRIVER SUBWOOFER FOR MEDIUM TO LARGE VENUES

The Klipsch KPT-684-SW is a high-quality THX® approved cinema subwoofer that features an advanced low-frequency driver design inside a bass-reflex enclosure for smooth response to the lowest audible frequencies. The system utilizes dual 18-inch drivers that gain the system’s amazing 105dB sensitivity through the use of large, geometrically optimized magnet structures and lightweight cones. Built from the inside out for performance and durability, the KPT-684-SW packs a punch that lets audiences hear as well as feel the impact of edge-of-your-seat entertainment.

As a personal note, these subs really slam.  With 132 db of continuous output from dual ported pro audio 18's, one of these will have you feeling that kick drum in your solar plexus and two would make any bass head smile.  

spec sheet:
https://d2um2qdswy1tb0.cloudfront.net/product-specsheets/KPT-684-SW-Data-Sheet-v03.pdf?mtime=20171006103405&focal=none