This question is half about speakers and half about amps/receivers, but I figured that if any settings needed adjusting, it'd be in the amp itself, so I'm posting in here. What I'd like to know is what effect a floorstanders/cetnre/rear setup will have on a system when a DVD is recorded in 5.1, if the setup has no sub? What happens to the sound that's supposed to be going to the '1' in the 5.1 setup? I'm trying to find out what the best setup would be for a system that's playing music as well as movies (see my search here), and at the moment separates seem the best bet. I'm looking at some Monitor Audio Silver floorstanders, a centre and a couple of bookshelves or rears for rear surround. Would this work, or is a sub necessary? Does an amp like the RX-V1500 have settings to overcome these issues?