Ceramic metal matrix diaphragm for loudspeakers

Details Ceramic metal matrix diaphragm for loudspeakers Ceramic metal matrix diaphragm for loudspeakers

2007-10-09

2007-10-09

Kuntz, Curtis (Department: 2614)

Electrical audio signal processing systems and devices

Electro-acoustic audio transducer

Electromagnetic

C381S426000, C381S428000, C181S167000, C181S168000, C181S174000

Reexamination Certificate

active

10041551

ABSTRACT:
This invention provides a method of manufacturing speaker diaphragm for a loudspeaker that has a composite material formed of two layers of ceramic material separated by a light metal substrate and where the core is formed by stamping a sheet of standard gauge aluminum to form a speaker core and then deep anodizing the core to obtain a ceramic layer of alumina on each surface (Al2O3) that is at least about 1 mil. thick. The invention further provides for a loudspeaker diaphragm, where the diaphragm is a composite material formed of at least two layers of ceramic material having a metal substrate therebetween and where the thickness of the metal substrate is no more than 86% of the thickness of the composite material.

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