Give it a try...what is there to loose?
Do you have another option? If not, make the best of what you have.
I have a 12'X12' room with a vaulted ceiling (and another with a 7' planar/flat ceiling) and no particular problems I could relate with either, other than I might like the room to be larger. REctangular is a bonus maybe but not a show stopper. A room is what it is. If you have flexibility in locating the speakers optimally for your listening position, that is of course a bonus.
Vaulted ceilings will generally make a room sound different, often better from an openness and sound staging perspective , particularly if the ceiling is angled rather than planar.
Do you have another option? If not, make the best of what you have.
I have a 12'X12' room with a vaulted ceiling (and another with a 7' planar/flat ceiling) and no particular problems I could relate with either, other than I might like the room to be larger. REctangular is a bonus maybe but not a show stopper. A room is what it is. If you have flexibility in locating the speakers optimally for your listening position, that is of course a bonus.
Vaulted ceilings will generally make a room sound different, often better from an openness and sound staging perspective , particularly if the ceiling is angled rather than planar.