RIBBON-TYPE ELECTRO-ACOUSTIC TRANSDUCER WITH LOW DISTORTION AND IMPROVED SENSITIVITY

摘要

A ribbon-type electro-acoustic transducer has a magnet system which comprises a pole plate (2, 3) and a centre pole (1) between which an air gap (8) is formed. A diaphragm (7) on which conductors (9) are arranged, is disposed in the air gap. The cavity (15) enclosed by the magnet system and the diaphragm (7) can be acoustically coupled, as the case may be via an additional cavity (16), to a (bass-reflex) duct (17). This results in a transducer with an operating frequency range which has been extended towards lower frequencies.