Phonograph pickup cartridge

Details Phonograph pickup cartridge Phonograph pickup cartridge

H - Electricity

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H04R 11/12 (2006.01) G11B 3/02 (2006.01) H04R 1/18 (2006.01) H04R 11/08 (2006.01)

Patent

CA 1038300

PHONOGRAPH PICKUP CARTRIDGE ABSTRACT OF THE DISCLOSURE A quadraphonic phonograph pickup cartridge is constructed with a tubular magnetic armature resiliently supported for vibration on an elastomeric bearing. Performance, especially at high frequencies, is enhanced by mounting a magnetic rod inside the armature on another elastomeric bear- ing that surrounds the inner rod at a point midway between the ends of this rod. At the low end of the frequency response band for the cartridge, the magnetic rod is inertially suspended so that it vibrates in unison with the armature. At the high end of this response band the rod vibrates generally out of phase with respect to the armature thereby flattening the high resonant peak attributable to a prior art armature which is not provided with such rod.

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