汽车音响的主要组成部分是主机、功放和扬声器。汽车音响的主机好坏最直接的就是看它的技术指标，绝大多数为音乐功率，在４０Ｗ～６０Ｗ之间，功率越大越好，人耳所能听到的频率范围在２０ＨＺ～２０ＫＨＺ之间，因此该指标最少要达到这个数值，而且越宽越好，音乐信号和噪声的比例，高档汽车音响多在９０ＤＢ以上，数值越大越好，功放是音响系统的心脏，功放的功率大小，质量的好坏对音乐的播放起着至关重要的作用。

1、好的汽车音响喇叭要求磁钢相对较大且重，支架结构牢实，连接的地方，包括纸冒，纸盆，连接线涂的胶水都非常均匀，完整。
Good car stereo speakers require relatively large and heavy magnets, support structure real prison, connecting places, including paper run, cone, cables are very uniform coating of glue, and complete.
2、好的汽车音响喇叭纸盆均匀地上下活动，且受力均匀，最好是纯手工工艺，最重要的还是听，听是体现汽车喇叭效果最直接的方式方法。
Good car stereo speakers cone evenly up and down, and even by force, it is best handmade craft, the most important thing is to listen, to hear car horns effect is a manifestation of the most direct ways.
3、首先功放的功率应与喇叭的功率相搭配；其次应该选择有内置分频器的功放，这样使系统可自由对功放和扬声器进行组合，同时也使得整套系统的音质能够提高。选购时还要注意尽量选择足够大的散热器，来保持正常散热。
First, the power amplifier and speaker power should be matched; secondly should choose a built-in amplifier crossover, so the system can be freely combined for amplifiers and speakers, but also makes the quality of the entire system can be improved. Also note that when you try to choose the optional heat sink is large enough to maintain proper cooling.

济南汽车音响升级：http://www.sdcarmusic.com/