7 ch Preamp question

I wouldn't do anything else at this point unlsee you have a small room or cost issues. If you have a 5.1 dvd matrixing the back channels to 4 speakers fills the room that much more with sound and blends it, unless you happen to one of the few people that can have proper imaging on the rear speakers. But I haven't seen one yet they usally get thrown agenst a wall or in a cornor.

If you visit the DD-EX or DTS-ES websites you can find information on every movie release that has been encoded in those formats. There are a handfull (mainly action movies, though Punch Drunk Love was too) that are encoded.

Tangent-7.1 is completely supperfluous for teh vast majority of installations. The room is usually just not big enough to warrant it. In very large rooms I like 6.1 to fill in the rear.

thanks bignerd, that is what i was looking for, thanks again !!