I checked the sled before I installed the mic and everything was okay. The empeg behaves flawlessly in every other aspect so I doubt the amp wiring is at fault. The mic was held in the centre of the car. I have tested the mic with several other sources.

If I were to say anything was faulty then I think it's the DSP. As I mentioned in another thread, it never seems to play all the tones, there always one or two tones that you couldn't hear. Of course another run of the auto eq would result in another tone being inaudible. I very nearly damaged the speakers last time and was left with a high pitched whining noise that you could only get rid of by selecting another eq preset. I'm not really keen on trying it again just yet.

Has anyone sucessfully used AutoEq in a car? Because i'm unable to find any posts that say this.