i looked the site and find a thread but it wasn't helpful. ( http://forum.xda-developers.com/show....php?t=1722136 )
im not a professional but i can do what ever u say ! i promise i'll do step by step what ever u say to fix my sound and make it louder !
my phone is rootet now , i used viper4android . but i didn't help me ! i don't like this sound . i want a loud sound like ipod !