Amazon.com: Rockford FOSGATE R2SD4-12 12" 500W Car Shallow Mount Slim Subwoofer Sub R2SD412 : Electronics
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 - Creative Audio