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Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups
(AREA)
Abstract
An improved mobile coil loudspeaker, characterized in that it consists of a completely flat plate of light material, oscillating and of reduced inertia, supported by a frame, in the center of which a moving coil is fixedly connected in a homogeneous field of a magnet permanent, properly arranged in relation to the coil forming the magnetodynamic device. (Machine-translation by Google Translate, not legally binding)