Abstract: A system for controlling acoustics and emissivity in an arena having a ceiling includes a pair of rollers mounted adjacent the ceiling and spaced apart over at least a portion thereof. A plurality of acoustics and emissivity controlling panels connected together to form a continuous sheet are mounted between the rollers for movement across the ceiling when the rollers are rotated. The panels include one having a high emissivity surface of at least 90%, one having a low emissivity surface of 7% or less and one having an acoustical surface with sound absorbing characteristics.

Abstract: An arena includes a performance area and an audience area having a ceiling extending thereover. A plurality of first insulating elements having high acoustic characteristics and low emissivity are mounted in a portion of the ceiling extending over the performance area and a plurality of second insulating elements having high acoustical characteristics and high emissivity are mounted in a portion of the ceiling extending over the audience area.

Abstract: A method of installing and hanging large acoustical panels in an arena by hanging the panels from I-beams in a ceiling area of the arena by suspending a worker from the I-beams by a harness and providing a tightrope for the worker to stand on whereby the worker can handle panels while being supported by the harness and the tightrope. The worker passes a hook end of a hook clip, attached at its opposite clip end to a panel, through a passage formed by a flute in a deck supported by the I-beams and engages the hook end with the opposite upper flange of an I-beam to hang the panel therefrom.