Amazon.com: DS18 SLC12S Car Subwoofer Audio Speaker - 12" in. Paper Glass Fiber Cone, Black Steel Basket, Single Voice Coil 4 Ohm Impedance, 500W MAX Power and Foam Surround for Vehicle Stereo
EXL XX 12" High Excursion Subwoofer 2000 Watts Rms DVC 4-Ohm
EXL XX 12" High Excursion Subwoofer 2000 Watts Rms DVC 2-Ohm