I've just got an SR4300 and am reading the manual before installing it ... a quaint habit but one I find useful. I'm confused about one aspect of the setup .. In SPEAKER SETUP one sets the volumes of each speaker, I understand this In SURROUND SETUP one sets the volumes of each speaker, I understand this I DON'T understand why one has to do this TWICE. Can someone please explain what it is one doing in the first step compared to what one is doing in the second? I also see there's yet another level-setting in the 6.1 CH. IN. setup. I'm migrating from a Nakamichi AV-10 and that only had one speaker volume setup phase. Cheers.