I Have Major Power Problems. Stupid Stereo Sucking Jiuce, How can I

K I installed another Cab



i took out my 2 15s , and im running 2 12inch TITINIUM PHOENIX GOLD, off a 500.2 amp and a night time my lights dim almost all the way to off..


i installed 1 ferret and it still does it...


what do i need
more cabs

please...

i dont wanna buy a new alternator seeying to change them its a big thing...