Tone pickup arm device keeping excellent dynamic lateral balance

Details Tone pickup arm device keeping excellent dynamic lateral balance Tone pickup arm device keeping excellent dynamic lateral balance

1977-04-11

1978-09-12

Stephan, Steven L.

Undertaking

274 23A, G11B 316

Patent

active

041132653

ABSTRACT:
A pickup arm device having a dynamic damper and an adjustable dynamic lateral balancer both of which are provided between the head shell and the fulcrum at which the pickup arm is supported. The dynamic lateral balancer is arranged so that it has a low center of gravity. Accordingly, the lateral balance of the pickup arm does not vary throughout the tracking movement of the pickup arm. Also, the position of the weight pieces of the balancer can be adjusted to obtain the desired reproduction frequency. Furthermore, by the adjustment of compliance and resistance of the damper, it is possible to vary only the resonance peak of the resonance frequency in the low frequency range of the pickup arm device.

REFERENCES:
patent: 3231283 (1966-01-01), Stanton
patent: 3649031 (1975-03-01), Templin

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