Thank you very much for the help and suggestions. I think that there could be other problem. I will take a picture of my setup today and will post it. My room has 3 alcoves the center speaker is sitting in the middle one and fronts in the left and right one. The alcoves are large about 8*4*3 feet. Maybe that's why the sound could sound like out of the box. But I keep speakers on teh edge. I will post the picture tomorrow morning so it will be easier to explain.
Thank you!