The original audio system in the car can no longer meet people's needs. If you want to improve the sound quality, you should first start with the audio source. The tape drive has a narrow frequency response and is noisy, so there is no need to consider using it. Some people think that adding a CD drive to the original car audio system completes the upgrade task and can improve the sound quality. For example: For a Fukang car, the owner installs a six-disc or ten-disc CD drive on the original car audio system, a pair of 6×9” speakers at the rear, and even an active subwoofer. This approach seems to work. CD function, but from the perspective of sound quality, there is not much improvement, because it still uses the playback system of the tape machine, and the signal is received from the radio FM band, the frequency response has been limited, and the advantages of CD cannot be exerted, so The sound will not have a layered and thorough feeling. From this example, it can be concluded that improving sound quality cannot only improve one aspect, but must improve the overall quality. However, this does not mean pursuing high-end equipment. You must choose equipment according to your specific situation. , that is to say, you can achieve the best results with the least amount of money on the audio system equipment you can accept. When establishing the audio equipment system, the matching of each equipment should be basically consistent in style, otherwise it may affect the appearance, function, and use. , indicators, etc. Let’s upgrade the sound system now!

1. It is best to choose CD, MD or DVD as the host. If it is just for listening, choose CD and MD. The sound quality of VCD is poor and it is best not to use it. MP3 is a compressed format. Although the current MP3 speakers have added sound quality processing circuits, the sound quality is still not as good as that of CDs. The host is a model that does not modify the signal, which is the so-called "original juice". "Original". Because the modified signal is not the original waveform and has produced distortion, the music played is not ideal. If you use the host to drive the speaker directly, you must choose a high output power. Now the output power of the host is generally 4×50W. . If you use the front output of the host, you should choose one with a high output level in order to improve the signal-to-noise ratio. The output level is generally 2-4V. By the way, CD records should be genuine, and it is best to use disks. CDs with "DDD" printed on them indicate good sound quality. Don't insist on pursuing too many functions. As long as the functions of the equipment are moderate and meet the basic requirements, don't be cheap and miss out on what you need. The basic functions of the equipment. Users should consider in advance which ones are necessary and which ones are dispensable, so as to avoid inconvenience in future upgrades.

2. When choosing speakers, First of all, you should consider what kind of sound system to use. According to the system-sound quality type such as: classical, symphony, light music, etc., you should choose a sound pressure type with clear and soft sound quality (i.e., "blow-up") such as: disco, rock, etc. You should choose a speaker with a solid structure and a large dynamic range. According to the power, if you use the host to drive the speaker directly, you should choose a speaker that matches the output power of the host. Generally, you should choose a speaker with high sensitivity, which is easy to push. Speakers driven by power amplifiers should use high-power speakers, which have a large dynamic range, confidence, and full sound. They can be divided into coaxial, discrete, multi-channel, subwoofer, etc. The most commonly used type in the front is the split type, because the split type separates the treble and mid-bass, which is convenient for installation and sound field positioning. Some have treble attenuation in the crossover to facilitate the adjustment of treble intensity.

3. Matching of power amplifier and loudspeaker

Matching of power amplifier and loudspeaker mainly refers to impedance matching, power matching, sensitivity adaptation and timbre adaptation, etc.