QSC E118SW E-Series 18" Passive Subwoofer 18" externally powered, live sound-reinforcement subwoofer. The E118sw is a high-performance direct radiation subwoofer with a single, 800W, 18-inch, aluminum frame woofer. It’s designed to...

VTC NS9 Dual 18" Birch Enclosure 2400 Watts 4-Ohm High Output Subwoofer Applications Touring Sound Live Theatre Concert Halls Houses Of Worship Features High Efficiency, Compact Enclosure Design Dual 18-Inch Long Excursion Low...

Yorkville LS1208 Passive Pro 18" Non-Powered Subwoofer 4000W DJ Sub (Carpet) 18-inch - 2000 watts A two year investigation into the optimization of high output low frequency sound has yielded the LS1208 "basspipe" subwoofer system. The "basspipe" is a...