Thanks for all your replies. I know soundcheck is very important. I try to be always long time befoe at the place to have enough time for the sound. But I was wondering so much if anybody with a X1 has ever experienced also that the overall sound was to sharp and has too much bass. Different from what the headphone suggests. But I will defenetly try to connect via the line and not via the Mic.
One of the places I play has exactly the problem you mentioned. The speakers are hanging from the ceilling. Two to the audience and one to us. It causes only problems, but "they don't want the picture to be disturbed by extra speakers standing in the haal. Cosmetic reasons, before sound quality, thats often the reality.
A shame but true.

Gr,Marc