Loudspeaker apparatus

Details Loudspeaker apparatus Loudspeaker apparatus

1993-10-13

1994-06-28

Kuntz, Curtis

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Having electrostatic element

381196, 381203, H04R 2500

Patent

active

053254392

ABSTRACT:
A loudspeaker apparatus utilizing a ribbon diaphragm which is capable of transforming an electrical signal into an audio acoustical signal. The diaphragm includes a first side and a second opposite side. First and second magnets are also employed in the present invention and are mounted to the edges of the diaphragm such that the diaphragm lies in the magnetic field generated by the pair of magnets. A first plurality of spaced magnetic plates are stacked and extend continuously from the first magnet to the second magnet at the first side of the diaphragm. The first plurality of plates form a throat-shaped cavity of a predetermined size. A second plurality of spaced magnetic focusing plates are stacked on the second side of the diaphragm in the same manner. A plurality of sound damping shims are interposed each of the first plurality of magnetic focusing plates on the sides of the throat-shaped cavity. An acoustic coupler or horn may be easily attached to the throat-shaped cavity to enhance the lower acoustical response range.

REFERENCES:
patent: 3832499 (1974-08-01), Heil

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