Electrical audio signal processing systems and devices – Electro-acoustic audio transducer – Having electrostatic element
Patent
1989-06-05
1991-10-29
Dwyer, James L.
Electrical audio signal processing systems and devices
Electro-acoustic audio transducer
Having electrostatic element
381182, 381186, 381173, 381190, 381202, 381204, H04R 2500
Patent
active
050621394
ABSTRACT:
A multi-driver, coaxially mounted loud speaker array utilizing a high frequency bi-morph driving element that is totally contained within the hollow core of the voice coil former of a lower frequency loud speaker. The outwardly radiating conical edge of the high frequency device's diaphragm is annularly fixed by a compliance to the inner surface of the referenced voice coil former or to the diaphragm which radiates outwardly therefrom and is excited by the former. A significant advancement in the art is acquired by the realization of a cavity between the situs of the bi-morph driving element and the back of the former--excited diaphragm, behind the annular compliance. This feature allows a design engineer to literally tune the response of the higher frequency loud speaker by deliberately varying the volume of the cavity.
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Chan Jason
Dwyer James L.
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