I have been moving my rear speakers around the room looking for a better position than on the back wall, about 7 feet behind. One location is on the side wall directly next to sitting position, however I have an open beam on the left side so they would have to be mounted about 7 1/2 feet high. They will also be just under the ceiling. This will allow the null to be in the right place. Do this seem to high? I have a partial wall that comes out from behind which I could use to mount the sides about 2 feet higher than sitting, but it would be 5 feet behind. I would like to try either bipoles or dipoles but don't think I have an ideal place. Do either of these places make sense or does monopoles faced towards each other 5 feet behing make the most sense. If you remember me from earlier posts, I am unable to audition speakers because of my location. Thanks.