Polk Audo Monitor 30 series weights about 10 pounds each. I got the
Omni-mount
at $30 a piece but after I attached them to the wall and secured the speaker
to it, I don't think it will hold. The mount is plastic with a lot of
connecting pieces held together by allen screws in compression, and a single
screw holds the speaker through the key hole in the rear of the speaker. As
I adjust the speaker the plastic parts yields a little, I think with the
vibration it will not be long before it fails.

I was thinking, there is only one keyhole in the rear of the speaker, so it
was meant to be mounted with a single screw. I can get more sturdy mounts
in the $50 a piece range that looks like a tray but I really want to conceal
the mount as much as possible. Why can't I just get a hanger bolt and
screws one end into the wood stud and the other end with a cut that holds
the speaker and not use any mount?

Any suggestions?

MC