Wanted to introduce myself to the forum. Bought new to me '15 Macan Turbo with the Burmester audio option and want to upgrade the subwoofer as my first modification. I have a line output converter (LOC) I want to use to pull signal for the aftermarket amplifier. Where are you guys getting a signal? I downloaded the manual so I can see what each pin at the subwoofer does but not sure if that will work. Any suggestions?