Fedde, Read your post regarding Speaker up-grade, went and bought the Infinity speakers. My Car OEM phone is active, so I do use it from time to time. I have a question, when I opened up the kick panel speakers I found out that there are two set of wires connected to the OEM Nokia speakers. One set of wires is for Cell phone hands free, and other set is for regular audio signal. The infinity speakers don't have seperate connections for cell phone and audio signal's. If I connect both of them to the speakers then signal is distorted. also should I be using the frequency division filter (cross-over). Your reply is awaited.