Title: Turntable system with low aggregate resonance

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.

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Inventors: Zolt, David M. (Troy, MI, US)

Application Number: 016091
Filing Date: 1979-02-28
Publication_date: 1980-09-30
Assignee:
Primary Class(es): 369/247 366/254, 369/263
Other Classes:
US Patent Ref:

2315398	Mar, 1943	Clark	248/638.
3031196	Apr, 1962	Rabinow	274/23.
3048408	Aug, 1962	Morgan	274/39.
4050665	Sep, 1977	Matthews et al.	248/638.
4146236	Mar, 1979	Tsukamoto	274/23.

Other Refs: 974563254784913208941399525

Feb, 1961	DE
Jun, 1976	DE
Jun, 1973	GB
Jul, 1975	GB

Primary Examiner: Haroian, Harry N.
Assistant Examiner:
Attorney: Ebert; Michael