1. Always keep the appearance of car speakers clean and the wiring must be firm.

2. Regularly check and tighten the fixing screws of car speaker and bracket to ensure reliable grounding.
3. The fixing method of automobile loudspeaker has a great influence on its pronunciation. In order to make the sound of the horn normal, the horn cannot be firmly installed, so it shall be fixed on the buffer support, that is, a leaf spring or rubber pad shall be installed between the horn and the fixed support.
4. Be sure to check the output voltage of the generator. If the voltage is too high, the horn contact will be burned out; If the voltage is too low (lower than the rated voltage of the horn), the horn will make an abnormal sound.
5. When washing the car, do not wash the horn directly with water to prevent water from entering the horn and mute the horn.
6. When repairing the car loudspeaker, please pay attention to the position of metal pad and insulating pad, and do not install it incorrectly.
7. The continuous sound of the speaker shall not exceed 10 seconds to avoid damaging the speaker.
8. Do not put all kinds of foreign matters into the car speaker to avoid abnormal sound.