The KTV stereo crackles, like firecrackers.

1. The tweeter safety tube is burnt out. Some speakers use 20W 12V lamp beads for treble protection. Because of whistling and other reasons, it is not completely broken after burning. The filament gap is so small that it is almost invisible to the naked eye, and it may be touched again when shaken. This quick switch is the crackle of the high-pitched unit. The louder the song, the more obvious it is. When the volume is low, the treble may be muted. More likely.

2 power amplifier problem, try changing the power amplifier, but change the room.

3. The possibility of poor contact of the speaker plug is relatively small, because poor contact of the speaker plug is more likely to lead to speaker mute.

4. Poor contact of power supply, especially audio processing unit or power amplifier, causes sparks and noise when working at high power.

5. It is also possible that the frequency divider element is soldered in vain, resulting in poor contact.

This industry is so immoral. How can you choose him to do it for you?