As far as testing front to rear, it is pretty easy. Just watch a scene where something goes over/by you with the volume cranked. If you hear it come up from behind you, then it works, if its depth ...

I've got an extigy and just did a surround sound test with it, and it mixes the centre channel onto the 2 fronts, is this right?<BR><BR>I used the SW: Episode II THX test menu to do the test, it just ...