Each bracket is almost identical so that the boxes can not be screwed on properly from the principle or look in an entirely different direction.
This bracket earned full points on the one hand a lot of adapters are doing and secondly that my rear speakers finally obliquely downward toward sofa rays.
I'll still mounted the day and then can gladly upload other photos.
Just stupid that I have set accidentally bought 2 times.
If it takes someone like report.