Klipsch RP-640D Designer On-Wall Speaker (Each)Description Designed for larger spaces, the Reference Premiere Designer On Wall RP 640D brings the dynamic, detailed, powerful sound of the Reference Premiere box speakers to a slim, on wall solution. The matte finish helps it blend more seamlessly with contemporary interior and electronics, making it a great sounding, great looking solution in a high performance home theater or media room where floor space is at a premium.& Slim On Wall Solution