The paper describes the new form of a horn loudspeaker with a cylindrically shaped piezopolymer diaphragm. The diaphragm is in the angular direction mechanically pretended and turned with the spacers on the cylindrical supporting body. The cylindrical body is divided on the segments separated from each other by narrow radial slots forming the wave guides with a constant cross-section. The outputs of these slots are connected to the input of the horn. The assembly was verified as a horn tweeter.
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