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
Boss Audio Brand New CXX8 Chaos Exxtreme 600 Watt Subwoofer - Walmart.com
PowerBass 2XL-1240D 900W Max 12 inch Dual 4Ohm Subwoofer - Walmart.com