Waz up guys, this is my first time in this forum. Well I have a question: I just bought a Rockford Forgate (Punch) 2 channel 200 watts. I'm just using one channel and hooked it up to a 10" Bazooka. At idle, I noticed that the rpm goes down when there is bass and at night the lights dim a little bit. Do I need a bigger battery? New alternator? Or is this normal? Thanx