In general, the speakers of home cinemas can be divided into moving coil units according to frequency. There are several types that need to be understood. Let's talk about them below.
1、超低音单体：工作范围大约在 15 赫兹到 200 赫兹。
1. Subwoofer unit: the operating range is about 15 Hz to 200 Hz.
30 赫兹以下人耳不容易听见，但身体会感受到。像电影中出现的地震场面，或是火箭发射的震撼感，超低音拥有足够的量感及衝击力，能让听者获得相当大的满足感。
It is not easy for people below 30 Hz to hear, but the body can feel it. Like the earthquake scenes in the movies, or the shock of the rocket launch, the subwoofer has enough sense of volume and impact to make the listener feel quite satisfied.
2. 低音单体：工作范围大约在 30 赫兹到 3k 赫兹。
2. Bass unit: the working range is about 30Hz to 3kHz.
低音单体需要较大的体积才能产生较好的表现，作动出厚实的低音，因此低音单体的直径多在 8 吋以上，又以 12 吋或 15 吋为普及，常见于 KTV、舞台等宽阔的场所。
The bass unit needs a large volume to produce a good performance and to produce a thick bass. Therefore, the diameter of the bass unit is more than 8 inches, and 12 inches or 15 inches are popular. It is commonly used in KTV, stage and other wide places.
3. 中音单体：工作范围大约在 200 赫兹到 4k 赫兹之间。
3. Medium tone monomer: the working range is about 200 Hz to 4kHz.
中音域是分佈在人耳敏感并且讯源集中的区域，中音单体的发声表现往往能够做到逼真还原，音色乾净有力，且让人感受到强烈的节奏性。
The middle range is distributed in the sensitive area of the human ear and the signal source is concentrated. The vocal performance of the middle range can often be realistically restored, the sound color is clean and powerful, and people feel strong rhythm.
4. 高音单体：工作范围大约在 2k 赫兹到 20k 赫兹之间。
4. Tweeter: the working range is about 2KHz to 20kHz.
讯源中的乐器，像是小提琴、吉他等等的乐器都包含了泛音，所以高音单体通常都必须设计成 20k 赫兹才行。
The instruments in the source, such as violin and guitar, all contain overtones, so the high pitched unit must be designed at 20kHz.
5. 超高音单体：通常是指超过人耳听觉上限 20k 赫兹的高频，工作范围大约在 4k 到 40k 赫兹。
5. Ultra high frequency monomer: usually refers to the high frequency exceeding the upper limit of human hearing 20kHz, and the working range is about 4K to 40KHz.
另外还有二种单体的组成形式，这二者因为外观都是一个单体组成的扬声器，很容易将这二者搞混:
In addition, there are two forms of monomer composition, which are easy to confuse because the appearance of the two is a single speaker:
同轴单体是复合式设计，先经过分音器将音频分成二音路或三音路 ，同轴是将高音与中/低音单体，装置在同一个单体中，由于採用同一条轴心线，因此称为“同轴”。关注我们
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The coaxial unit is a composite design. First, the audio is divided into two or three sound paths through a sound divider. The coaxial unit is a unit of high and medium / low sound, which is installed in the same unit. Because the same axis line is used, it is called "coaxial". Follow us Yes, learn more!
