Has anyone here has the problem? When I'm listening to my cds, my left front speakers are not working at all, well they do but you can barely hear them because I was going back and forth changing the balance between the left and the right. Funny thing is when I'm listening to the radio, the left speakers do work, just not as bad as when I'm playing cds, there's just no bass coming out of the left one. Anyone know what's wrong?