After hunting for some rigging hardware (from a rigging supply) yesterday, this morning I met with the ISD crew about the game plan for rigging the new speakers. We used 1/8″ aircraft cable, 1/8″ thimbles & the end terminations were made with 1/8″ copper sleeves using a Nicopress 63V-XMP crimpe. Each tool & sleeve combination has different specifications. For example, a different crimping tool may need more or less crimps to hold the total weight. For 1/8″ sleeves, you use the oval P groove & the termination requires (3) crimps. Each of the 3 crimps should measure .353 inches wide with a digital caliper. We used 1/4″ Crosby screw pin shackles which are rated for .5T / 1000lbs @ a 5:1 minimum safety margin. What this means is that you could hang 5000lbs from the 1/4″ Crosby shackle before it would break. Rated for a SAFE WORKING LOAD of 1000lbs, means that this 100lb speaker is going to be safe in the air and stay put. Since we have (2) cables on each cabinet, either one could fail and the full weight of the cabinet would be easily supported.

These EAW AX3 series cabinets are very back heavy so using only the front support points they hang upward toward the ceiling. We used a 3rd rigging point on the cabinet with 1/4″ shackles and rated chain for the rear pullback point which allowed for setting the proper downward angle.

Here is a photo with the (6) EAW AX3 cabinets flown and the old Peavey PA system uninstalled.

I mentioned in the first post covering this project that the existing PA was flown when it wasn’t designed for being hung. Here is a picture of one of the cabinets the ISD crew took down.

measurement traces to follow…