For the large speaker cluster in the center of the acoustical ceiling, Clancy provided a custom hoist with a load capacity of 2,000 pounds and a fixed speed of 20 fpm, with an overspeed brake assembly. “The custom speaker cluster drops down through bomb bay doors in the ceiling, which are rigged and operated by two custom line shaft hoists, that disappear when they’re not in use,” said Cooper. “We also provided the speaker cluster door hoist assembly: two hoists with a load capacity of 1,000 pounds each.”