At the time of purchase, pay special attention to this car audio speaker performance, determine its advantages and disadvantages, the most direct way is to look at its specifications. Judging from the following aspects:
1, total harmonic distortion (THD): this index reflects the reduction of sound reproduction, the smaller the number the instructions to restore higher sound quality is better.
2: output power: now host the power the vast majority of music power, between the 40W-60W, the power is not too big.
3, s/n ratio: it refers to the music signal and noise ratio of premium car audio speakers above 90DB, the larger the better.
4, the frequency response: the human ear can hear frequencies range between 20HZ-20KHZ, so the indicators should at least reach this number, and the wider the better.