In the future I will be installing a 7.1 system and need to place the 2 rear QS8's on the ceiling behind the listening position. I really want to mount them flat against the ceiling instead of hanging them with the metal arm bracket(s). I have 9' ceilings and will be sitting on a couch in the listing position.

Is it okay if I mount the QS8's this way as opposed to hanging them?

In case you're wondering, there is no rear wall in the room as it goes into another room (just a knee wall).

Thanks!

Ed V.