mozda vam ovo popravi zvuk na Cynogen modu
Fix Low Call Volume using Speaker Phone and Bluetooth Headset Huawei 8800
1) Make sure your phone is Rooted.
2) Using Root Explorer or Similar Navigate to /etc
3) Press the Button "Mount R/W"
4) Longpress on the file "hwVolumeFactor.cfg" and Open in Text Editor.
5) Change the values for "speaker=" and "wired_headset=" settings that are popular seem to be "speaker=90" and "wired_headset=75"
6) Save & Exit.
7) Restart your Phone.