I have just put an Alpine stereo (model #CDA-9884) in my 2001 Mitsubishi Eclipse. It is wired up to the Amp up under the seat and 2 15" Soundstorm subs and a Ample Audio Amp. I have adjusted all of the settings on the stereo or at least I think I have. The problem is the subs are just barely thumbing and I don't know what is causing this. When I had the factory stereo wired up they were Hitting hard and now there not. If anyone knows what might be causing this please let me know.