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For many car enthusiasts nowadays, besides the functions of the car itself, the most concerning issue is how the car's sound system functions. As is well known, many car audio systems actually have mediocre sound quality effects. For many friends, we naturally hope to have better sound quality effects. Therefore, with the increasing development of the car audio modification industry in recent years, more and more people are choosing to do car audio modification and upgrade. But some car owners who have not yet made modifications and advanced will complain about the poor quality of the car audio system after using it for a period of time, and there will always be noise or other small problems. So next, car audio modification manufacturers will introduce to us the reasons and solutions for car audio noise.

1. The casings of each component must be grounded, and the audio input lines must be shielded with excellent grounding.

2. Turn the volume potentiometer to low, which means it is silent. At this point, there should be no sound. If there is a buzzing sound, it is caused by a change in the capacity of the electrolytic capacitor in the amplifier's filtering circuit, which is too small; If there is a loud buzzing sound when turned on, it is caused by poor audio input shielding of the amplifier. Check and clean the shielding fault.

3. If there is a hissing sound from the car horn, it is usually caused by poor overall shielding or inadequate insulation of the power transformer winding in the first stage. In this case, it is generally only necessary to disconnect the power plug.

Article source: LED Bluetooth audio system http://433wx.cn/