distortion

I have this unique problem where I get so much static and distortion (especially on the local NPR/WBEZ channel) that it is impossible to actually hear the discussion/report. It really manifests on the NPR channel but I think it's there on the other channels too, just the music on those channels...

I got my Mazda 3 I touring with the tech package which has the Bose sound system. After about a month I noticed some digital distortion coming from the rear deck speakers. I have already taken my car to the dealer and all they did was update the infotainment system to ver. 31.00 and the issue is...

I bought my 2014 Mazda 3 at the beginning of January and since I've had it I've noticed the bose system has a slight distortion in the speakers. I think its coming from the 3 speakers on the dash. I listen to my music through bluetooth a lot so maybe this is where the distortion is coming from...