Rattle/buzz with certain bass tones.
 

Does anyone else have issues with their stock system doing this? I've got the 2013 bespoke and even with the bass negative it will still rattle what sounds like the door panels like crazy. It's driving me nuts because I can't isolate it. Usually you can touch the panel or spot where its coming from and it will quit.

mine does it, probably best way to get rid of it is to add a sub and remove the low freq's from the doors altogether

Can you do that though? I was looking through the bespoke options and didn't see a subwoofer section. Just tuning for front to rear.

This was driving me crazy, I took apart both door panels and put some dynamat type stuff everywhere and siliconed all the groves where the panels met (the door panels are made of multiple plastic pieces).

I had to install / reinstall the panels a few times to get rid of all the rattles, now I can use the Bass all the way to the end if I want to with rattles in very rare istances. It was VERY worth it - my favorite "mod" so far as I'm quite the music lover, I don't even feel like having to upgrade the speakers anymore.

OP, I suggest you turn off the stereo and confirm if the noise goes away or not during the same circumstances. I had/have a buzz in my car that I thought was the shitty stock speaker system for months; turned out to be a completely different issue.

Put pressure on the drivers side window switch panel when you hear the buzzing. I bet it goes away. There's a TSB for it.

i had a similar issue but it actually turned out to be the quarters i kept in the sidewell. bass notes made them rattle.