FIELD: electroacoustics. SUBSTANCE: device has flat diaphragm, which is made from dielectric material, magnetic system, flat, helix coil, which is designed as group of axial open rings, which are electrically connected to one another in gaps, ring plate, which is made from diamagnetic material, and ring ferromagnetic strips, which are positioned in ring gaps of magnetic system. EFFECT: increased functional capabilities. 2 cl, 4 dwg
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