Sound amplifier system

Details Sound amplifier system Sound amplifier system

1990-01-16

1992-06-02

Isen, Forester W.

Electrical audio signal processing systems and devices

With amplifier

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381 93, H03F 2100

Patent

active

051194309

ABSTRACT:
An amplifier using vacuum tubes is mounted in a housing with a speaker in such a way as to minimize microphonics by having the speaker axis and all vacuum tube axes parallel.

REFERENCES:
patent: 2231235 (1941-02-01), Weir
patent: 2812382 (1957-11-01), Michael
patent: 3183305 (1965-05-01), Jespersen
patent: 3473625 (1969-10-01), Heisrath
patent: 3514539 (1970-05-01), Jespersen
patent: 3860755 (1975-01-01), Kimbell

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