Frequency characteristics of car speakers

The frequency characteristic of a car speaker is an indicator to measure the width of the audio frequency band of the speaker. The high-fidelity sound reproduction system requires that the speaker system should be able to reproduce the audible sound range of the human ear from 20Hz to 20000Hz. Since it is difficult to achieve this sound range with a single speaker, the current high-fidelity speaker system uses three types of speakers: high, medium and low to achieve full-band playback coverage. In addition, the frequency characteristics of hi-fi speakers should be as flat as possible, otherwise frequency distortion of the playback will be introduced. The high-fidelity playback system requires that the frequency characteristic unevenness of the loudspeaker within the playback frequency range is less than 10dB.