I have a receiver that decodes Dolby 5.1, dts, and Pro Logic only. So what happens when it receives a Pro Logic II signal (in my situation, from GameCube games)? I am still getting "surround" sound out of my rear speakers, so I am assuming it is just being decoded in normal Dolby Pro Logic using "one" rear channel (the left rear and right rear make the same sound), not "separate" left rear and right rear signals. Is this correct? Thanks!