I am sorry if this is a very amateurish question but I could not get any answers from my instruction manual. I am trying to add a pair of speakers on my patio through this reciever using the multi-zone 2 output but I can't seem to get it to work. It is my understanding that I do not need a separate amp if I use multi-zone 2, is that correct? I set it up on the onscreen menu to output multi-zone 2 but still no sound comes through the speakers. I would appreciate any help anyone can give me.