Pay attention to film capacitors when car audio is modified

When the car is driving fast, the sound generated by the tire and the road surface friction, the engine running noise, the sound generated by the collision between the car body and the air, etc., will weaken the bass effect. So install the appropriate high-performance subwoofer and boost the bass area to make the music full.

In the car modification, the power amplifier, the speaker, etc. do not have to be used well, and the good power on the audition table may work well because they are stable. But in the car, there is no such effect. Sound conversion and stable voltage is a difficult problem in the modification. Especially when the bass is used, the output voltage is difficult to stabilize, and the sound effect should not be exerted.

The role of car audio film capacitors in car audio conversion is as follows:

1. Filtering effect. In the power supply circuit, the parallel electrolytic capacitor is used to make the output voltage and current more clean and stable.

2. Can improve the quality of the power supply. Capacitors have a storage function, and electrolytic capacitors with a large enough capacity can increase the low-frequency impedance of the power supply, thereby improving the instantaneous dynamic quality.

3. According to the principle and characteristics of the capacitor, the capacitor also has a frequency dividing effect on the music frequency. In car audio, many "dividers" are designed based on the principles of resistance, capacitance and inductance.

4. Coupling. The capacitor is in the channel of the audio signal, so that the two circuits of strong and weak electricity are isolated by the capacitor, but the coupling of the capacitor enables the audio signal to be continuous. Coupling capacitors are mostly CBB capacitors with high withstand voltage and slightly larger size.