American Bass 15" Subwoofer 1000W Single 4 Ohm Bass Pro Car Audio DX-15 309271188685 | eBay
American Sound Connection 312H Universal Large Car Trunk Triple 12" Sealed Subwoofer Rear Angle 3 Sub Box Stereo Enclosure and S-W12D2 Type S Series Sub Dual 2 Ohm 1200W Peak 12" Subwoofer
Amazon.com: American Bass XO 1544 15" 1000 Watt Car Audio Subwoofer DVC 4-ohm Sub XO1544 : Electronics