I'm currently having a local shop do some upgrade to my 05 4.8, they are using AudioControl LC6 to pass on the signal to my amps. Does anyone know if that will cause any problem. The car isn't finish yet, don't know if anyone is familar with the LC6. I'm using one sinfoni 45.2x for the front doors and one 45.2x for the rear doors. And a Audiosystem f2 500 for my sub. They recommended to take the mid. Just use a 2ch in the front and 2ch in the rear door. I'm using AD 600 and 600NEO for the front and AD SW1200 x2 for my sub. If it works.. i guess ppl with dsp issue maybe can use a simliar setup.