When the second-hand stereo removed from a luxury car is refitted into your own car, you must first understand two issues. The first is the size of the speaker. The second is that the sound quality of the luxury car is better than yours, not only the speaker, but also the sound insulation, power amplifier and host. If you buy a luxury car horn, you can try it if the price is right and the size of the horn is right. After all, a skinny camel is bigger than a horse. If you are thinking about the sound effect of Mercedes S600, think about it. Let&;s see what the original car horn looks like first. This is the bass horn of Toyota series, which is roughly in this 6×9 shape. Mazda series model horn shape Chevrolet series horn shape, Honda, Volkswagen also have similar Kia Buick Angkewei BMW BO horn BMW horn Mercedes-Benz horn shape, the horn size specifications are not the same, so it is necessary to change the second-hand disassembly horn. If the size of the horn is not selected correctly, there will be many hidden dangers and sounds when it is barely installed. Even if it&;s installed, it doesn&;t mean it&;s passed. The impedance and power of the horn need to be matched. Improper matching is counterproductive and not worth the candle. The second point is the luxury car power amplifier, which is the soul of luxury car audio. Although the sound quality effect may not be good, this power amplifier is designed and debugged for the car body, and the effect is very different from other unprofessional gameplay. Therefore, the plan to change the second-hand luxury car audio depends on whether the model supports and whether the speakers can match, and not most models are owned. Moreover, how many of the so-called luxury car second-hand stereos are really disassembled? Are these pre-installed brand stereos so easy for you to buy? Can the final sound effect satisfy you?