[Subanez]

Well, you don't just put int he speakers...they come with a box enclosure so that you actually get some bass and mid coming from the door. The "factory" door speakers come with this installed, so its more complicated than just cutting a hole and throwing some speakers in there, that's what he's talking about.

I'm trying to do that to my car too, but I have some severe engine problems to work through first. ;-) Its gotta run before it can play music, I guess, haha.