I have 2 12" sony explodes. A sony explode head unit. and i forget the amp but i know its not the greatest amp. It is a D4. The subs play fine but the quality isn't that great. The low notes are fine but the high notes are a lot quieter and often are unheard. Overall the notes arn't that clear im pretty sure thats just my subs tho. Is this just the way my subs are or can i fix them by hooking up a capacitor or something? Maybe change a setting on my amp? Please give me some suggestions if you know what your talking about. Thanks it's much appreciated!