This thread seems to address the exact problem I'm having with my HOX since the last OTA update.
Since this, in an effort to make my rear speaker louder, I have rooted and installed CWM recovery + Recovery HD 31.3 ROM, with pureXaudio and xLOUD... I've had no improvement what so ever on the speaker volume.
I just download and installed AudioX from this thread. Installation was successful but again, no improvement - it didn't change at all.
I didn't think it would change anything, but I did clean out the speaker using a toothbrush... and it didn't change a thing indeed, but that's out the way now...
Is there something I can do ? Is there a way to verify that the AudioX installation did indeed succeed ? Can I change the configuration somewhere manually ?
Here was my thread regarding this problem : http://forum.xda-developers.com/show...1#post46497301
Some people already sent me advises, links, and so on - unfortunately I've had no luck trying all those things out...