The versatile CM20DTS 4.25" two-way design built-in ceiling loudspeaker produces a dynamic and warm sound ideal for high-quality background music and voice reproduction. The back can with only 83.5mm (3.287") built-in depth is probably the shallowest in his kind. The uncompromised sound quality and controlled sound performance makes it suitable for any kind of ceiling structure. The CM20DTS has a rotatable 70/100 volt power tapping selector on the front and offers 16 ohms connectivity. The thin edge grille with integrated neodymium grille fixing magnets will blend this top-notch loudspeaker in any design environment.