Abstract: A method and system for automatically and reliably controlling equipment for outputting sound and, potentially, lighting, pyrotechnics and other effects in live entertainment productions based upon the real-time physical location of one or more specific performers within a performance area in either an absolute sense or relative to a controlled article of equipment. The system includes a radio frequency identification subsystem and an equipment control subsystem.

Abstract: A truss connector for releasably coupling ends of truss structures in a quick and uniform fashion. The connector connects trusses, end-to-end, by binding to their tubular truss members in spigot fashion with an arbor, traveling nut and expandable collet assembly and by binding to the truss gusset plates in a directly fastened, mated plate assembly.