The purpose of this paper is to discuss the development of a high performance stereophonic pickup cartridge of the type using piezoelectric ceramic generating elements. In recent years there have been remarkable improvements in the designs of cartridges of this type, resulting in a high order of performance in many of these cartridges on the market today. Ceramic cartridges have taken a steadily increasing share of the market in high quality factory-assembled home phonographs. At the same time they are finding increased favor among audiophiles who use high fidelity components rather than packaged equipment. Notwithstanding these improvements in cartridges, it was felt that still further improvements were possible and that a market exists for a new type ceramic stereophonic cartridge having certain important advantages over existing types. The following discussion relates the important phases of the development of such a cartridge.
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