I may have to move my 170SE surrounds to a new location behind the couch, which would require them to be mounted high on the wall. I haven't used a wall mount before, so I have a couple of questions.

When using the Omnimount 20's, can I rotate the 170SE into a horizontal position? In this orientation, how far would I be able to angle the speaker down towards the listening position? It looks like the mount itself is spec'd for +/- 30 degrees of tilt. Can I expect at least this much tilt?