Variable input amplified speaker with improved power input secti

Details Variable input amplified speaker with improved power input secti Variable input amplified speaker with improved power input secti

1990-02-13

1992-11-17

Isen, Forester W.

Electrical audio signal processing systems and devices

With amplifier

330297, H03F 2100

Patent

active

051649918

ABSTRACT:
An amplified speaker has an amplifier section including an audio amplifier powered from a power input section and a variable audio input section for supplying an input audio signal via an audio transformer to the audio amplifier. The power input section includes a rectifier bridge and a capacitor filter circuit, so that power may be obtained from an inexpensive unregulated AC source rather than an expensive regulated DC power supply. The variable audio input section permits audio signals at various levels from 30 mVrms to 70.7 Vrms to be inputted.

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