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.
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