No one ever figured this one out, ey?

My newer Rotel five channel amp = no thump. Odyssey two channel amp = no thump.
Chiro c-500 five channel amp = thump.

Tried the Chiro with two other processors (the one that comes with the Acoustic Energy Aego system (bedroom system) and a denon receiver being used as a processor. These combos = no thump.

Someone has to know somoething about this! Anyone?