Public address amplifier

Details Public address amplifier Public address amplifier

1988-05-27

1990-01-23

Isen, Forester W.

Electrical audio signal processing systems and devices

One-way audio signal program distribution

Public address system

455349, H04R 2700

Patent

active

048963607

ABSTRACT:
A public address amplifier comprises a housing which contains an output amplifier connected to loudspeakers. A microphone containing a microphone transducer and an input amplifier is connected to the input of the output amplifier and to connectors on the housing by a cable. A second such public address amplifier can be connected to the first by connecting its cable to one of the connectors so as to provide a public address system of increased power.

REFERENCES:
patent: 3706852 (1972-12-01), Angus
patent: 4146191 (1979-03-01), Cavanaugh
patent: 4471651 (1984-09-01), Dimeff et al.
patent: 4475231 (1984-10-01), Elster
patent: 4524452 (1985-06-01), Marshak
patent: 4546267 (1985-10-01), Urfirer
patent: 4555674 (1985-11-01), Palara et al.
patent: 4752745 (1988-06-01), Pass
Radio Shack 1986 Catalog, pp. 54 and 58, Models 32-2024, 32-2020, and 32-2028.
Audio Cyclopedia, pp. 611-613, 1979.

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