Bison

Hi I dont know what happend. When someone shoot, something drive or explode, I hear this but.. I dont hear direction. Tank can be 10m behind me but I dont know that. I dont know what happend with it. I have both sounds unchecked in option and use Asus Xonar XD/DX. I have tryed to find Dynamic Range addon or ECP but everything is outdated from 2004-2006 and dont work. When I will turn on Hardware sound, some sounds go crazy any idea ?