Reliable speaker protection circuit diagram

LC03-3.3 SOP8 TVS Static Protection 3.3V

Q1 and Q3 are respectively used for forward detection of left and right channels: Q2 and Q4 are respectively used for negative detection of left and right channels. Since each channel uses a detector circuit and any channel has a problem, it can provide a discharge energy path to C5, so that J can be released, and the resistance values ​​of R1 and R2 (R3, R4) can be changed. Sensitivity.