Compact and stylish DU 100X is a ceilings or walls surface mounted speaker. The DU 100X incorporates 100mm (4”) loudspeaker and a coaxial 25mm (1”) tweeter placed on a bridge support and it is equipped with a line transformer that enables direct connection to constant voltage systems at 25/70/100V. When connected to a 100V line, its power can be selected among the values 10/5/2.5/1.2/0.6W through the selection 6 inputs wire. A 25V socket makes it possible to connect multiple speakers in parallel to a constant impedance line. Installation is quick and easy thanks to a special three-terminal system that avoids the need for using screws or other attachment elements.