So Reach is pretty badass with the home theater speakers and subwoofer in 5.1
I finally got a wild hair to check it out and put down the headset (probably because I added a subwoofer lately).
There was something going on funny within the xbox, because I set 5.1 over and over. When I checked it one more time it was oddly in stereo...so I put it in 5.1 again and now it works.
I found the wmv clip bungie put out that someone mentioned...http://www.bungie.net/projects/reach...=faq&cid=28796
. That checks to make sure 5.1 is working properly with Reach.
Yeah, explosions are rad.