Power amplifier with clipping level control

Electrical audio signal processing systems and devices – Sound effects

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Details

381 63, 381100, 84737, 84738, 84740, H03G 300

Patent

active

056756569

ABSTRACT:
In a power amplifier, a control device employing a dual ganged potentiometer is connected in the feedback circuits of successive amplifier stages to increase the gain of the front end stage while simultaneously reducing the gain in a subsequent stage when the control is turned down. A distortion circuit, such as a tube compression circuit, is coupled between the stages. When the control is turned down, the compression circuit is activated at a lower level that effectively reduces the output power of the second stage. Presence and resonance controls may be provided to tailor high and low frequency damping factor of the second stage and function until the compression circuitry is activated. A ripple reduction filter is provided in a filtered supply for the drivers in the second or power amplifier stage.

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patent: 5133015 (1992-07-01), Scholz
patent: 5197102 (1993-03-01), Sondermeyer

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