Electrical audio signal processing systems and devices – With amplifier
Patent
1997-05-05
2000-02-22
Chang, Vivian
Electrical audio signal processing systems and devices
With amplifier
381 28, H03F 2100
Patent
active
060289457
ABSTRACT:
An interchangeable amplifier device includes an amplifier cabinet. The amplifier cabinet has a bottom side, a top side and enclosing side walls for housing the amplifier electronics. The enclosing side walls have a front wall and a back wall. The front wall of the cabinet has a volume control and a power switch. The back wall of the amplifier cabinet has an audio port and an AC power supply cord. The audio port has a plurality of speaker terminals and a plurality of input jacks for receiving audio input for transmission to the stereo speakers. An upgradable power board with at least four flat leads may be plugged into an upgrade slot connector found along the back wall of the amplifier cabinet. The upgradable power board receives a first voltage of input from a transformer when plugged into the upgrade slot connector. The upgradable power board, when plugged in, will resupplying the amplifier with a second voltage of a magnitude greater than the magnitude of the first voltage. Further provided is a sliding bracket assembly to which the upgrade slot connector is coupled. The sliding bracket assembly has a first orientation with the upgrade slot connector situated adjacent a plurality of openings formed in the cabinet for allowing access thereto and a second orientation with the upgrade slot connector positioned distant the openings adjacent the front wall of the cabinet for storing the upgradable power board entirely within the cabinet.
REFERENCES:
patent: 4070546 (1978-01-01), Hirota
patent: 4987385 (1991-01-01), Engelmann
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