Well I'm starting to upgrade my system. I'm going slowly but everything will get replaced eventually. I keep blowing my back speakers and i have no clue why. They are 6x9's and I read about getting 6.5's instead so thats what I'm looking for. The speakers recieve power straight from the head unit. That might be a problem, I'm not sure. But I am looking to replace them and buy an amp for them at the same time. I'm looking for recommendations for either of those two things. I am going to go to a couple car audio places around here and listen to the recommended items. But I have no clue what good brands are. So any help will be appreciated. Thanks in advance.