Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Plural or compound reproducers
Patent
1985-02-15
1987-05-12
Rubinson, Gene Z.
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Plural or compound reproducers
181144, 381 88, 381186, 381188, 381192, 381199, H04R 906, H04R 102
Patent
active
046655506
ABSTRACT:
An electrodynamic loudspeaker for the high or mid-range sound region emits sound omnidirectionally. The loudspeaker comprises two identical individual loudspeakers arranged on opposite sides of a plane of mirror symmetry. Each loudspeaker has a drive unit with a permanent magnet fixed at a carrier part common to both sides and a moving coil means, including a winding and a bobbin, elastically held by a spider at carrier part. Each moving coil means is rigidly connected with a hemispherical membrane. The carrier part is formed as a ring and is limited by a spherical ring surface having a diameter which is somewhat smaller than twice the diameter of the outer rim of the membrane. The moving coil means has a diameter substantially the same as the outer edge of the membrane.
REFERENCES:
patent: 3393764 (1968-07-01), Schafer
patent: 3456755 (1969-07-01), Walker
patent: 3686446 (1972-08-01), Manger
patent: 3720787 (1973-03-01), Ishii et al.
patent: 4472605 (1974-09-01), Klein
Byrd Danita R.
Rubinson Gene Z.
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