I have noticed the same problem since day one, I hought I was just going deaf from my wife yelling at me (just kidding).
My RT was in for the first service last week. I printed this thread and shared it with the dealer. They do not have the updated BA package. I also reported that the right rear speaker ratles like crazy with any bass applied. The dealer got lazy, and just ordered a new speaker, I have the stock BA 1 CD system.
I hope to get this corrected soon! Thanks for all the info, the dealer was blown away when I had to show THEM the fix!
Later,
MAGNUM8R

 

Where do you get your Techincal Service Bulletin info from??

 

From the service manager at my dealership.

 

I won't say.

 

Thanks for all the help and the TSB guys. Had problem fixed today. Sounds a hell of alot better. Now it actually sounds like something. Will change system in the future, but for now it will do.