More from Amazon.com : http://www.amazon.com/gp/product/B0086V5Y9W?tag=thefatkidin06-20 PowerBass 2XL Series Subwoofers 10 Inch Dual 4 Ohm -2XL-104D 2XL Series Subwoofers 10 Inch Dual 4 Ohm Designed and Engineered in the USA