PS3 Stereo Sound Issue with Metro Last Light - middle channel to low

Basically the middle sound channel seems to be much to low on my PS3 system.
That ruins the whole game. Especially when another NPC talks to you, you need to turn your head in a postion so one ear is facing almost directly to him, otherwise you will miss what was said.

I have this issue only when playing Metro Lat Light. As several others on this forum. But I couldn't find an answer that's wy I repost it here.


Again here the discription in other words from a different thread:

I have the same issue on my PS3.
The ISSUE with METRO Last Light STEREO SOUND on PS3 is : I only hear the sound of any source (e.g. Pawel speaking) if I turn one ear in the direction of the source of sound. In other words I miss most of what is said !