I have Klipsch RS-42s and they are bout 11.5lbs each. They are about 10.75" wide, 10 inches tall. I bought some clamp wall mounts to put them up, but ran into a problem. The speaker I have to put above a window will not fit with the clamp mount because of where the bar comes out of the mount doesnt leave enough height for the speaker to fit before hitting the ceiling. I should have measured better before ordering :O So I have been looking at ceiling mounts and haven't found anything that will hold a large speaker and not droop over time. I wouldn't be against building my own if anyone has any instructions. I would like something that can tilt/pivot down so I can point them slightly down from their high height (8ft).