As the title states. My 2012 has the Bowers and Wilkins system, with the yellow speakers.

Does anyone know if bluetooth calls come from all 4 front speakers (doors + tweeters)? Or is it just doors? It's a little hard to tell. On the passenger side, there is a very noticeable crackling/distortion during calls, and it can be heard during some songs, as well.

 

Since I don't know the answer, I would change my Balance/Fade controls to isolate front/rear and then left/right to narrow it down.