Speaker Protection Circuit Diagram. To provide greater speaker protection the relay wiring in figure 2 is designed to short the speaker to earth in case of a fault. An ocl amplifier pattern uses a dual power supply.
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In now a power amplifier usually build with a direct coupling circuit. Stereo speaker protector circuit the stereo speaker protector circuit serves to protect speakers from dc leakage current in the power amplifier and. Electronic circuit diagram audio speaker speaker protection circuit stereo speaker protection circuit stereo by circuit diagram.
During this initial delay period the output of amplifier will be grounded by the resistor r2 through the n c contact of the relay.
This way even if the contacts do arc it will be directly to earth. To provide greater speaker protection the relay wiring in figure 2 is designed to short the speaker to earth in case of a fault. The output of the power amplifier connects to the speakers directly. While switching a power amplifier on a loud thump sound is heard to sudden heavy discharge current through the speaker at the time of power on.
