by Dual I mean the car audio company.
and what do you think about these:
http://www.bestbuy.com/site/olspage.jsp?skuId=8359616&type=product&id=1177112903683
and what do you think about these:
http://www.bestbuy.com/site/olspage.jsp?skuId=8359616&type=product&id=1177112903683