Just updated my speakers to give me a 7.1 system - whats the best setting on the amp to make sure all speakers are working all of the time from for example
I think you need to use one or other of the listening modes that use all 7 channels, such as Dolby PLIIx, DTS Neo:6 (which will expand stereo out to 7 channels) or Onkyo All Channel Stereo, etc.