So the main opinion here is:
1) No need to reduce dynamics, simply reduce the gain and/or back the
horns off the mics.
2) There´s no need to record the signal with a high level (hope you
understand my english) as you usually did with a analogue tape
recorder.

So there´s another question for me:
Creamware writes in the A/D converter´s manual: "You HAVE to care
about high leveling". Is this nonsense ?
And as I wrote earlier, I´m not able to keep a big distance between
the horns, because the room is actually too small and therefore I have
to put the mics very close to the horn, not directly ´looking´ into
the bell.

Thank you for any opinions on that

Ewald