ELECTROACOUSTIC TRANSDUCER Russian patent published in 1994 - IPC

FIELD: electroacoustics. SUBSTANCE: electroacoustic transducer has a magnetic system, audio coil, membrane coupled with the coil. The magnetic system is composed of two axially magnetized permanent disk magnets which like poles face each other, a washer interposed between them, two pole-piece and magnetic core. The magnetic washer comprises an odd number of layers the middle one of which is fabricated of diamagnetic material and the others are fabricated of two different types of soft anisotropic material. The magnetic core can be made ring-shaped or in the form of a cup. EFFECT: enhanced accuracy. 2 cl, 2 dwg