I dont really know anything about car audio but I was looking to buy my b.f an amp I have no idea what one to get. He has 3 12's...they are MTX thunder 800's (the old ones). Some one had told me that I need a 200w amp @ 1ohm ...is that true. What is ohms and what does he need? Also what is the least amount of watts he needs. PLease help me im so confused, try not to use too many technical terms.lol. Thanks!