We are installing a paging system in a new car dealership, and need to hang some pendulum speakers from open steel beams... We use beam clamps, but the speaker brackets are too narrow for them, so I had to make a mounting bracket...
This is what I came up with, the speaker bracket is in the middle, the one on the right is the prototype I whipped up with some metal I had laying around... I went and got the aluminum today!!
My mill, LOL!!
The slots are not perfect, but I have 7 more to make so they will get better!! They will be 30 feet in the air anyway!!
The clamps go on each side of the beam,
The speaker hangs off the bottom of the bracket!!
I see a small mill/drill in my future!! Plus a mig welder and plasma cutter...