In the projection booth
 

Here's a fun website with a tour through past and present projection booths at the Roxy Theatre in Montana...

http://www.roxytheatre.net/pages/insidebooth.html

Thanks for the link! That was really interesting, I had no idea that DTS worked that way.

I had to laugh when I saw what they use for splicing the reels, I thought they might use something more advanced but nope, it's the same good ol' tape splicer we use in film school!

That was a nice read (the whole website actually). Thanks!