I noticed tonight when I had my light and stuff on that my amp didn't have the UMPHHH it normaly does in the day so I figured that I was losing power. Stock, my car has a 110amp alternator so I am going to upgrade, is 200amps going to be enough? I am running a Kicker sx1250.1 but I will be going to two when I get my high current sub (not telling which one, lol) so I will be pushing 2500+ WRMS. Man, I was sure getting stink coil tonight, sub (RE sx15) breaking in nicely, gave my brother a good head ache, lol. Polo..