ELECTRODYNAMIC LOUDSPEAKER Russian patent published in 1997 - IPC

Abstract RU 2073959 C1

FIELD: electroacoustics. SUBSTANCE: loudspeaker has evacuated housing accommodating magnetic system and coil rigidly coupled with concave membrane taking atmospheric pressure, and flexible corrugated ring secured on case frame. EFFECT: improved design. 3 cl, 1 dwg

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RU 2 073 959 C1

Authors

Karfidov Vladimir Nikolaevich

Dates

1997-02-20—Published

1993-06-28—Filed