I am trying to figure out where the AMP is for my BOSE radio on a 2001 Audi A8. My rear door tweeters aren't working and either are my rear deck speakers. My fronts work fine and my rear door mids work fine. I am assuming it is the amp. I want to remove and replace unless there is any other ideas of what it could be. Thanks

 

If it is like my 2001 A4, the rear deck speakers are amplified at the back left speaker.