Ok guys...
some news:
Got additonal 45 DSP in 3 Cards.
They won't work together with a Luna II - so the euphemism was broken...
When I tried MasterVerbs with the four Cards installed (3x 15+Luna) it was possible to load a lot more than 25 Masterverbs - but no output - nothing... After some playing with Sample-Rate and connections a box popped up and said, that there is an inavalid S/TDM... after some measurements i decided to pull off the fourth card - all works great but:
i only get to load 10 MasterVerb's without warnings in 44,1/16.
not the best result for this bunch of hardware?
- I'm currently unsure, if the external controller or my Dual-Processor Mainboard is the problem - i will try that setup with my intel this week and report the progress...

Greetings,
Robin