Only tweeters working when listening to radio??
 

Can anyone help with this problem.

When listening to the radio on my 2010 roadster (Bose, sat nav) the sound is only coming from the front tweeters, yet when listening to any other source all the speakers work? I've been searching the web for an answer but cannot find the solution. I really don't understand how this can be, I've done the speaker test and searched through and tried adjusting all the different settings on the system to see if I can get it working correctly but to no avail.

Any suggestions great fully received.

Dave

Puzzling. Assuming that you have not messed with any of the vehicles wiring, I would have to assume it is something in your settings. Have you switched back and forth several times to verify that it is an ongoing issue?
Just a shot in the dark here, but possibly your cell phone mute function??

It's been like that since I got the car, so even before I had chance to touch any settings. It's really bizarre. It always sounds like this when the radio is turned on, but is ok with other formats??

As much as everyone here wants to help, I'm afraid you'll probably end up taking it somewhere for a "hands on" troubleshoot.