So I got my free walmart amp and my poewr bass 10" installed just fine, It hit ok for a 10 in a buick on a walmart amp. Then my headunit broke(the clip that holds the face plate on broke off), so I got a Pioneer headunit with a nice generic preout, well I get it all hooked up and the sub dos not hit as hard anymore. Its more blurred, I checked the specs on my old headunit and the preouts were both plain preouts and not sub preouts. I have also gone through all my settings in my new headunit and it still just does not sound the same. What is going on here???