The boy is having a ranch party. The rents have a place out in the country and I have set up tunes around the cement pond and used to use an old stereo receiver that the kids never used. It crapped out and I bought a pawn shop home theater receiver to replace it. I have a bunch of ragtag speaker that work just fine for tunes, but the boy is having his best friends up for the night and they like to watch movies and play vidiot games on my projector and 10' screen outdoors at night. I have a really macho-looking set of speakers from a pawn shop (like 5' tall and covered with black carpet) and some ****** pairs of KLH speakers. I do not own either a subwoofer (not one that I can use anyway) or a center channel speaker. Do I need those for optimum effect? This is his Graduation/B-day/End of Aquatics/Going Away party so I'm willing to do some stupid **** to make it a big deal for him. Also, the receiver has an A and B front speaker system, a rear speaker capability, center channel and subwoofer outlets. I don't know if the bigass speakers should go for one of the front pairs or the rear pair. This will be outside so acoustics will not be controllable much other than speaker placement. I figure the kids will use lawn chairs and blankets on the ground. Any advice would be appreciated.