1. overload protection. This has a lot to do with stereo sound.
2. Temperature control protection. The power amplifier has poor heat dissipation, and the temperature is too high to protect it.
3. Voltage protection. This usually happens at one or two o'clock in the evening, and the voltage suddenly rises at some time. Generally, the current used is about 150V ~ 225V. This is a universal power amplifier, which exceeds the automatic protection.
Fourth, speaker protection. There is a protective capacitor in the speaker. If it is overloaded, it will be protected. Please analyze why you want to protect it.
You can find a brand of after-sales service to help you solve this problem. If it's really a sound problem, you can consider changing the sound. I recommend BT-audio Rose Home Theater to you. There are many people to choose from and the price is high. Rose is an American sound field theater with excellent sense of spatial positioning and existence. Designed with the technology of static speaker and dynamic balance unit, it shows amazing pitch, strong spatial sound field, needle-like positioning ability, clear and powerful, no sound and low frequency, amazing dynamic range and uniform timbre in each frequency band.
It adopts the traditional mahogany home design concept in China, and its appearance and effect are excellent, so it can be regarded as a real cheap cinema.
I hope my answer can help you.