Hi Mike,
Thanks for all the great info you have been posting about W205 audio. I've noticed that my front speakers (especially the right one) produce a really irritating buzzing noise when playing tones at frequencies between ~240 Hz and 280 Hz. This can be heard when using a tone generator app, normal music, and can be heard very clearly during a phone call if the other person's voice is rather low (for example the Apple Customer Service automated voice). I am taking the car to the dealership tomorrow, and I wanted to know if you have experienced this issue on any of the W205s you've tried and if you are aware of any definite fixes to the issue. I have prepared a flash drive though with different tracks that demonstrate the issue and am planning on leaving the flash drive with the technicians so that they can test it.
Anyways, I just wanted to ask if you had any suggestions or ideas that might be helpful when I take the car in tomorrow. Thank you so much