STOP!
There are several issues with your plan than give me pause for concern. It goes without saying that you should find a local rigger to consult with you on how to properly hang the speakers. 33lbs may not seem like a lot, but dropped from 20’ it will kill someone. Rigging is often not something you can just learn from “books” to say. Having a mentor goes a long way.
My concerns:
1) As Ron mentioned, you must use rated hardware! The eye bolts, Chain, connection hardware.
2) do NOT run the chain through the eyebolts. This applies load to the sides of the chain links.
3) Use shackles not quick links.
in THEORY the proper way to do this would be to use 1/4” grade 30
proof coil chain (their are chain manufacturers that approve use of
proof coil chain for theatrical
trim chains in a double load path.) You would form a
basket (loop) around the pipe
batten and then use a 1/4”
shackle to connect both ends of the chain directly to a
drop foraged shoulder eye
bolt attached to the speakers threaded insert. The pin of the
shackle would connect to the eyebolt, with both half’s of the chain in the bell. The attached picture shows the proper orientation of the
shackle. Just imaging the single piece of chain in the photo as the eyebolt.
Repeat this for the other two attachments. When you need to change the height or angle of the
speaker, you can simply “remove” links from he chain
basket, but make sure you do not let them get captured under the
shackle or the other chain links. The ones you remove should be free to move.
Again, this is the theory, but I highly recommend getting someone to come in and assist you with your hang.
Overloads, please remove this post if it crosses our TOS in regards to rigging.
Regards,
Ethan
