Abstract: A sound-actuated light advertising display (10) includes an octagonally-shaped reflector (20) having an octagonal base (21), outer side walls (22) extending away from the base (21) and projecting at an obtuse angle thereto, and a pyramid-shaped portion (23) extending away from the center of the base (21). A plurality of lights (25) are positioned in the reflector base (21) and are arranged symmetrically with respect to the pyramid-shaped portion (23). A sound-actuated power switching means (27) is connected between the plurality of lights (25) and a power source. The switching means (27) detects sound in the vicinity of the display (10) and regulates power input to the plurality of lights (25) in response to the variations in the level of the detected sound. A prismatically textured translucent cover (15, 19) is positioned over the reflector (20).