I checked the coax on both side’s it was connected the way it should. But with mentioning the analog you set me on the right track. I have a headphone amp that has input A connected to the Blu-ray analog output. This is the same player which I use with the coax to the DS. The RCA analog output of the DS is connected to input B of the headphone amp. And there is the problem these inputs has double relais and have several functions one of them is to loop the signal from input A to B where B became an output on the Headphone amp.
So the analog signal from the Blu-Ray was actualy going in the analog output on the DS and going out the XLR of the DS to my poweramp. So my movie was a direct analog signal from my blu-ray player for a certain level 80 or 90% when setting the DS to 100 while the coax input was chosen the DS added some extra volume.
In any case the problem is solved.
Thanks for setting me in the right direction.