My options are 12" sub in a tube, dual 12" subs in a bandpass, or dual 15" subs in an angled enclosure. I listen to metal music, so I'd like something that brings out the bass drum. What would you recommend? All these are those cheap Pyramid enclosures. I see it that if I blow the speakers, I'll replace them with quality ones later, I just want something to make my stereo louder. BTW, I have a 500 watt amp to handle the task. Also, I'm thinking of jetting the 3.5" dash speakers and cutting a hole in the door and mounting a 6.5" component speaker setup with the tweeters going where the 3.5"ers went before. Does this sound like a good idea??