I know I'll get called stupid here, but oh well. I had a 99 Firebird and now have an 04 quad cab dodge. I took my subs out of the firebird and just hooked them up in the Dodge in the same box to add a little bass until I get a box built for the truck. They sound....shallow I guess. I figure, overall, the size of the cab of each vehicle is about the same, or at least not different enough to make this big of a difference. Is it because the subs aren't sitting in a trunk or anything? I know that switching vehicles will change the sound, but the kick behind the bass is almost completely gone, despite the fact that you can still hear bass. I know this is hard to understand, but I am just kind of looking for reassurance that they will go back to their original powerful sound once I get my box built specifically for the truck.
Side note: I've checked and they are not out of phase. All wires are connected correctly and all the equipment is identical to the Firebird.