I have done 3 HT setups for people in the last 4 days(as favors, this is not my career). The first system one had no digital connection from DVD to receiver, though both supported it. The center channel speaker was somehow set 9 db's higher than the rest, and the sub was set to ='Yes', even though no sub was in the system. Owner amazed at difference in sound, even though he insisted that he had everything correct. The second setup was done as a direct result of the owners hearing the first setup after it was done correctly. 2nd setup had the rear speakers in another room altogether, and the 'B' set of speakers were acting as the 'rears' in the main room. The right and left front speakers were reversed, and the 4x3 TV was set to 16x9 in the DVD parameters, rendering all actors tall and skinny. The 3rd system I did from scratch. Person I was 'assisting' said when I started that after he 'knew how to set one up', he would be setting up his girlfriend's system. After 3 hours of setup, speaker calibration, etc., and teaching him how to use said system, he said he would pay me to set up girlfriend's system. Moral: Don't take your skills for granted. Almost any system you come across that was not set up by fanatics like us, is probably nowhere near it's potential. Anyone else have these experiences?