'08T&C touring rear audio not working
 

Very front works fine vocals mid range bass all present but there is muffled vocals coming from rear that's it even when turned all way up. I believe it to be factory amp for the rear has went out, my question is would that be an external amp mounted somewhere within the body or a internal to the head unit itself or even something else. It's the model with everything except navigation has touch screen, dvd, rear entertainment as well. Thanks.