I am trying to set up my system with an audigy 2 platinum and the left front, left rear and sub sound muted during the diagnostic. The sub works when I play music. I have set it up with the three analog connectors. Any ideas? The right front and right rear and center channel sound great. I just want all of the speakers to work. I have the controller for the z-680 set on 6 channel direct. and in the control box for audigy it is set up as analog. Help....