ugh it's starting to look like a deeper issue, but i messed around with the values a bit more... try this and let me know how it goes:
did you also try and disable dolby or any eq you might be using?...
XDA Developers was founded by developers, for developers. It is now a valuable resource for people who want to make the most of their mobile devices, from customizing the look and feel to adding new functionality. Are you a developer?