Yeh I used a car radio with a cd player. I went to best buy and asked them for the cheapest car radio they had with a cd player and it was like 70$ so i got it. I bought one of those 20$ speaker boxes from walmart that has two spealers and two tweeters with it already. Then I bought a marine housing to put the cd player in and monted it on top of the speaker box. I will possibly be able to get some pics of the whole thing put together Thursday, but here is a pic of the marine housing that the Cd player goes in.