Rockford Fosgate Punch P500X1bd Mono subwoofer amplifier 500 watts RMS x 1 at 1 ohm with
Amazon.com: Rockford Fosgate Bass Package - Two R2D4-12 Prime 12" Dual 4-Ohm Subwoofers, A P500X1BD 500-Watt Punch Amplifier and a RFK8I Power Interconnect Kit : Electronics