After i read a lot about improvments caused by changing stock subs for SWS, i thought it would be nice to fit them to my car. I have already cleared that stock amp has got 2 ohms impendance, but what about the alpine amp from the retrofit kit(
http://www.babybmw.net/forum/viewtop...f=29&t=11090)? which is already in my car, powering stock subs. Personaly i suppose it has got the same impendance cause it integrates in stock system, but iam not totaly sure, so please, i need your help
