I have an 89 vn exec and i recentaly got a pioneer head deck installed and i alredy had some sony xplode 6x9 in the back and some 4" in the dash speakers and at the moment i cannon get any decent bass out of them at all, even when i run a little bit of bass it distorts. now i know that xplode speakers aren't very good but they should perform bettrer than this. i have tried some really good pioneer 6x9's in both the front and back and they run just as crap as my speakers. i think and so do some other ppl that i have a dodgey power conection or earth, i'm just wondering what others think the prob might be. also how can i go about doin a better power and earth conection for my head deck to see if that is the problem. i'm not sure about wire collors and where to get power from. PLZ help me this is driving me insane.