follow this rule i came up with: if a "whole system" (with good receiver, speakers, player, etc...) sounds good in 2 channel music...then it *should* sound good in home theatre...if it sounds good in home theatre,...then it should sound good in video games....
My son uses the HSU VT12 sat system , along with the STF-2 sub and a HK 235 receiver. We ordered two extra satellites from HSU, for a 7.1 system. Since part of thefront L/R drivers are in the center channel, it works pretty good for a near field setup. (he's using a 27" HDTV monitor.) Of course the fact that we got it real cheap, during a Comp USA close-out sale, helps too.
Do what addiwei said and go shopping for nice 2-channel speakers (e.g. left and right) Bookshelf is fine as long as you get a sub. Once you find something that is clear enough for you, get the center and rears to match and you're in heaven. That's basically what I did... if it's good for HT it should be good for games.
Start with Klipsch if you like bright... they are fatiguing (to me) for music but they are pretty crisp and you might like the effect for home theater.
On second thought, you already have an HK 635, what are you using for speakers and why isn't that good enough for your games?
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