[mrcheezle19]

This is the review I was waiting for considering it sounds like we listen to the same music. Hopefully you can figure out the sound issues you are having and improve on the system, but at least for my knowledge I now know to take a different route than bavsound.

To help with your issue I read guys on the m3/m4 forum having the same issue with the under seat subs and weird vibrations. The guys there were taking the subs out and installing dynamat underneath and it was helping greatly with the weird vibrations/sound.