Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Patent
1994-04-05
1996-07-16
Kuntz, Curtis
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Having electrostatic element
381156, 381199, 381201, 381202, 381204, 181152, H04R 2500
Patent
active
055374816
ABSTRACT:
A horn driver includes a driver body and pole piece positioned therein. A throat extends through the pole piece along a longitudinal axis through the horn driver. A housing, attached to the driver body, is positioned above an upper portion of the pole piece and spaced therefrom to define a diaphragm chamber. A disk-shaped diaphragm in the diaphragm chamber is above and spaced from the pole piece and below and spaced from the housing. The diaphragm is attached to the housing solely at a central support area. The diaphragm has a ring-like and vibratable diaphragm portion extending radially outward from the central support area to an outer peripheral edge and a voice coil connected to a cylindrical voice coil support along the diaphragm's outer peripheral edge. The diaphragm portion includes an inner diaphragm segment extending upwardly and outwardly from the central support area to a peak point and an outer diaphragm segment extending downwardly and outwardly from the peak point to the outer peripheral edge. The pole piece upper portion has an upper surface shaped similar to and following the diaphragm portion. The spacing between the diaphragm portion and the pole piece increases continuously in a non-linear manner from a minimum near the peripheral edge to a maximum near the central support area. The horn driver includes a device for generating a magnetic field passing through the voice coil and electrical connections to the voice coil.
REFERENCES:
patent: 2534040 (1950-12-01), Lindley
patent: 2907837 (1959-10-01), Brami
patent: 5357586 (1994-10-01), Nordschow et al.
Shurupov Sergei
Voishvillo Alexander G.
Kuntz Curtis
The AWS Group, Inc.
Tran Sinh
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