12" Custom Hand Built Subwoofer 5000rms (Team 12) - EM Audio Subwoofers
Amazon.com: H YANKA 12 Inch Subwoofer - 12 Inch Paper Cone Subwoofer Car Audio, Black Steel Basket, Dual Voice Coil 4 Ohm Impedance 12 subwoofer, 1600W MAX Power 12 inch Competition Subwoofer : Electronics
Power Acoustik MOFO-X Series DVC 2Ω Subwoofer (12", 2,700 Watts) in the Mobile Audio department at Lowes.com