More from Amazon.com : http://www.amazon.com/gp/product/B00456BYQE?tag=thefatkidin06-20 PowerBass 3XL Series Subwoofers 12 Inch Dual 1 Ohm - 3XL-121D 3XL Series Subwoofers 12 Inch Dual 1 Ohm Designed and Engineered in the USA