Ok heres the deal. My cousin got a 05 Alpine TypeR 12" D4 sub for xmas from bestbuy. He got a new truck and a 12" is too big so we are putting a 8" in a center counsel we are building. The sub was used for 5 days. He has the original box and if it breaks you can send it back to him and he will replace it for free you pay shipping (he has a 4year warrenty on it.) So he is looking for a 4ch amp...something around 100x4 @4ohms