Supports – Resilient support – Including spring zone understructure
Patent
1979-02-12
1981-02-17
Hix, L. T.
Supports
Resilient support
Including spring zone understructure
248624, 181148, F16M 1300, H05K 500
Patent
active
042510457
ABSTRACT:
Method and apparatus are disclosed for reducing undesired transmission of acoustic energy from a loudspeaker cabinet into the structure of a building in which the loudspeaker is located, and also for reducing the undesired acoustical feedback from the loudspeaker into the turntable assembly. A high-Q resonant external suspension apparatus is positioned beneath the cabinet of the turntable or the cabinet of the loudspeaker. This suspension apparatus includes compression springs having a predetermined taper and a very high-Q which are arranged to provide resonance in all three directions (X, Y and Z axes). The mass of the supported structure and the spring constant of the tapered springs are proportioned to provide a resonant frequency in the range from approximately 3 to 6.5 Hertz with approximately 4 Hertz being shown as the presently preferred value.
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patent: 3874646 (1975-04-01), Vernier
Fuller Benjamin R.
Hix L. T,.
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