Quote:
Originally Posted by waynehoskins
Yep, I've heard the Rohn 25 story before too. That would also be not available in 1909. Thirties maybe, fifties for sure, but not a century ago.
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But not used as a stage lighting support structure till mid-70's and even then it was unusual. The use of antenna tower was only useful as pre-hang and cableing as it allowed the lighting tech's a somewhat quicker hang with fewer hoist points. The fixtures were still exposed underneath the truss and got banged around as a result. It wasn't till purpose built box truss was invented for the R&R industry (Thomas maybe ?) with 6 lamp Par bars in a recessed design, that truss use became the norm so mid-80's ?. At that point you saw HUGE time savings with the 6 lamp pre-wired bars, multi cables, joinable square truss, chain motors, dimmer-per-circuit, etc... You could now rig a 120 Plus lamp, in 2 x 50ft. wide trusses in an hour. Of course the time savings meant the LD's could now rig 300 plus unit plots.....
Steve B.