So I used to have dd ex(homebrew) in my house and am thinking about doing it again. A dumb question though...so I hook up the surround pre outs of my dd reciever to my old pro logic reciever and then hook up left right and center speakers on the prologic reciever right? How is it then that people get two surround channels when there is only one connection for a center channel on the dolby prologic reciever? Am I missing something? Thanks!