I just checked the manual for the yamaha and I can set the distances for each speaker separately and the milliseconds setting seems to be for an audio delay to synchronize the sound output to the video image. so do you think I should set the distances to the default of 10 feet, right now I have them set to different distances 13 to 14 for fronts and center{thats how far they are from my seating position} as I used the auto set up and it seems to work out pretty good.