Turntable system with low aggregate resonance

Details Turntable system with low aggregate resonance Turntable system with low aggregate resonance

1979-02-28

1980-09-30

Haroian, Harry N.

Undertaking

G11B 360

Patent

active

042251427

ABSTRACT:
A high fidelity turntable system with low aggregate resonance is disclosed. The turntable system comprises a tone arm assembly and a belt-driven platter assembly joined rigidly by a silent substructure of pure aluminum tubing. This low acoustic mass substructure is internally damped beyond its resonance point and is resiliently suspended from a base plate in a mounting cabinet to isolate the turntable system from substantially all resonant feedback. The acoustic mass of the turntable system and, consequently, the resonance, is further reduced by decoupling the tone arm counterweight from the tone arm assembly by means of additional resilient elements.

REFERENCES:
patent: 2315398 (1943-03-01), Clark
patent: 3031196 (1962-04-01), Rabinow
patent: 3048408 (1962-08-01), Morgan
patent: 4050665 (1977-09-01), Matthews et al.
patent: 4146236 (1979-03-01), Tsukamoto

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