Turntable system with low aggregate resonance

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

1980-07-11

1983-06-07

Haroian, Harry N.

Dynamic information storage or retrieval

Dynamic mechanism subsystem

Specific detail of storage medium support or motion production

G11B 2504

Patent

active

043874533

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 and other shapes. 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 for 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: 2572969 (1951-10-01), Bacon et al.
patent: 2927795 (1960-03-01), Drake
patent: 3047297 (1962-07-01), Drake
patent: 3048408 (1962-08-01), Morgan
patent: 3214177 (1965-10-01), Geiger
patent: 3510137 (1970-05-01), Freier
patent: 4202551 (1980-05-01), Darnall

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