The right speaker on my 15" Retina MacBook Pro is not working correctly. It is very soft and tinny. It sounds like it isn't working at all until you set the balance all the way to the right and it sounds very faint. It cuts in and out sometimes, although now it has been constantly faint and tinny. It has been getting worse. I have AppleCare, but I've owned the computer since August. Can I get this resolved? This isn't the only problem I've had. At one point, Disk Utility said that the SSD was corrupt, even though later it said it was OK. I've had freezing and random issues, but that was on OS X 10.8.2, so maybe it was software-related. Ever since OS X 10.8.3, I haven't had those same issues. I'm still having this issue though. I've reset the PRAM 4 times, but it hasn't resolved the issue.