Hey I need some help. I'm installing a Sony Xplod head into my car. The car has two 6x9s four tweeters and two 5.25s i believe. However I need to replace all of these speakers and I was wondering if when I install my amp and sub (8" 200w) I need to power the rest of the speakers off the amp, also how many channels my amp needs to be. Thanks for any help!
