JBL SRX828SP Dual 18 Inch 2000 Watt Powered Subwoofer | American Musical Supply
5 Core 15in Subwoofer Speaker 2 Pack| Black Cloth edge paper cone, 8 Ohm Impedance, 2000 Watt Power for Audio Stereo Sound System, DJ Setup and more - FR 15 140 MS 2PCS - Newegg.com
2) JBL Pro JRX225 2000 Watt Dual 15" DJ PA Speakers+Power Amplifier+Cables | eBay