Behringer B1800 X Pro Eurolive Subwoofer Passivo 1800 Watt Woofer 18" B1800 Xpro | Reverb
Behringer EuroLive B1200D Active Subwoofer | Reverb
Amazon.com: Behringer Eurolive B1200D-PRO 500W 12 inch Powered Subwoofer & Alto Professional TX308 – 350W Powered DJ Speakers, PA System with 8" Woofer for Mobile DJ and Musicians, Small Venues : Musical