Abstract: In a system for varying the intensity of a plurality of lights in accordance with plural channel audio amplitude signals, a display comprising a housing having multi-sided openings in the form of prismatic panels through which light passes from the interior of the housing. The housing mounts a plurality of banks of lights, certain of the lights being carried by a motorized member such that the lights rotate about a vertical axis. The banks of lights include a plurality of sets connected in a parallel fashion with each set having a selected number of lights connected in a series with a flashing unit. The lights are responsive to separate channels of audio amplitude signals, with each bank of lights being responsive to the amplitude of the associated channel of audio amplitude signals. A variety of window panels are disclosed.