Fader circuit for vehicle sound system

Details Fader circuit for vehicle sound system Fader circuit for vehicle sound system

1983-12-30

1985-07-09

Isen, Forester W.

Electrical audio signal processing systems and devices

Binaural and stereophonic

Amplifier

381105, 381109, H03G 300

Patent

active

045286868

ABSTRACT:
A two-channel audio amplifier for use in a vehicle sound system is provided. Each channel drives a pair of loudspeakers and includes a common amplifier connected to drive one terminal of each speaker. The remaining speaker terminals are connected to the outputs of a pair of additional amplifiers. Signals of one phase are applied to the common amplifier. Signals of opposite phase are applied to the additional amplifiers. Signals in phase with the common amplifier are applied to the inputs of the additional amplifiers through field-effect transistors. Control signals applied to the control electrodes of the transistors control the magnitude of the applied in-phase signal to independently control the output level of the speakers.

REFERENCES:
patent: 4404527 (1983-09-01), Schertz et al.

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