Ok Thanks,
So I took the usb mixer out for now (looking to upgrade to a digital firewire mixer).
I now have the H8000FW sound coming in on channells 3-10 but with static and
pops. I check the levels in logic and H8000FW all were ok to me no red at all.

In the manual are they saying you can get H8000FW effects as a insert, from a bus and an input
or is that 1 example for 1 total sound?

if i had a digital mixer (lets say 32 tracks) with firewire option could I run the H8000FW the same as in a DAW with 8 ch bus etc…..?

Thanks
Roc