Ok I've got my system down I looked at the Death Penalties and realized I don't want something that big. I know I'm just a starter but I understand car audio. I have done little systems before in my galant, 2-12s then 2-15s then 2-12s with 2-15s for a couple of days(had to put my seat back in), now back to 2-15s. I'm trying to do something big with my suburban since I have all the space. I UNDERSTAND CAR AUDIO NOT ELECTRICAL. All I want to know is how many alts and batteries I need, I guess I gotta take a simple question to a whole another forum just to get a simple answer. My final system is going to be 4-Fi BTLs on a Stetsom 7K2.