H YANKA 15 Inch Subwoofer - 15 Inch Paper Cone Subwoofer Car Audio, Black Steel Basket, Dual Voice Coil 4 Ohm Impedance 15 subwoofer, 2000W MAX Power 15 inch Competition Subwoofer - Walmart.com
Power Acoustik MOFOS-12D4 2500 W Max 12" Dual 4-Ohm DVC Car Audio Subwoofer - Walmart.com
Dual Electronics DWS12 12-inch High Performance Subwoofer with a 2-inch Single Voice Coil and 1,000 Watts of Peak Power - Walmart.com