The rear speakers (behind seats) don't seem to be working? They are wired up, I can only find a balance option for left and right and not front and back.

Has anyone else had this problem or is it just broken.

 

Sorry for the duplicate thread, my computer is playing up....

 

You will probably get more/better responses if you provide the model year and type of vehicle you have. You should have a front/rear balance control on your head unit.

In any case, the problem sounds like the head unit, as it would be unlikely for both rear speakers to stop working at the same time unless there's a problem with the amp (if applicable).