When you buy your own favorite speakers or headphones, you often fall into your own subjective analysis. I feel that the sound quality of this gun sounds good and the sound is loud...
In fact, this indicator of sound quality is measured and evaluated by objective criteria. What kind of diaphragm material generally determines the sound quality of the speaker, and the diaphragm does not deceive me.
According to research, the sound quality of the speaker depends on three indicators of the diaphragm material: material elasticity (E), density (Ï) and appropriate internal damping. The sound quality we usually say is that the internal damping is large.
The damping is large, it can filter out unnecessary clutter, the vibration stops quickly, and the sound is clean and soft.
On the contrary, the pulp-like material has large damping, soft sound, slower sound rise, and a faster drop, but insufficient strength.
Therefore, it is very difficult to satisfy the E/Ï at the same time and the internal damping is large enough.
Therefore, the performance of the speakers is different using different diaphragm materials. Before introducing the different sound qualities of different diaphragm materials, you need to know a concept: frequency response.
Frequency response refers to the ability of the speaker to react and distinguish the input signal. For example: Under normal circumstances, the frequency response range of a good speaker should be 20Hz to 20000Hz. When a 20Hz-20000Hz audio signal enters this speaker, the output music will have enough low frequency dive and very good high. Frequency performance.
When a 5Hz-25000Hz audio signal enters the speaker, the signal speaker above and below the speaker's frequency range cannot be processed. At this time, we will feel that the music is very narrow and lacks expressiveness.
The smaller the frequency response value, the flatter the frequency response curve, the smaller the distortion, and the better the performance. For example, the Power DD series can reduce the distortion rate to 0.02%.
There are many kinds of diaphragms for woofer, such as aluminum alloy diaphragm, aluminum-magnesium alloy diaphragm, ceramic diaphragm, carbon fiber diaphragm, bulletproof cloth diaphragm, glass fiber diaphragm, acrylic diaphragm, paper diaphragm, etc. Most are cone-shaped, and a small amount is flat.
The following mainly introduces 4 kinds -
Paper cone: The paper cone should be considered the oldest speaker material. Because the paper cone contains a large amount of fiber, the audio is easily absorbed when it is transmitted, that is, it forms a good damping.
On the sense of hearing, the tone of the paper cone is natural and the bass is full.
However, the shortcomings are also obvious: the moisture resistance is poor, and the paper cone material itself is fatigued after a long period of dry and wet cycles. Secondly, there are certain difficulties in manufacturing.
Wool Knitting Basin: The word is as follows, which is to infiltrate the softer wool fiber into the pulp of the woofer. This has obvious advantages: it is excellent for soft music and light music, and the human voice is mellow and natural.
But the shortcomings are more prominent: the bass effect is general, lack of strength and shock, so the performance of rock music and march is not satisfactory.
If you usually listen to light music and pay less attention to the bass effect of the speaker, the wool woven basin is the best choice for you.
Bulletproof cloth basin: Bulletproof cloth usually has a rubber edge or bubble edge, which will make the speaker's bass effect better, the frequency response is wider, the sound is more stereoscopic, and it can withstand more power. So it's suitable for big dynamic music.
However, in general, its cost is relatively high, the manufacturing process is complicated, and it is not good when playing light music.
If you are a game fan and like strong bass music, the bulletproof basin is a pretty good choice.
PP (polypropylene) basin: pp basin mainly refers to plastic diaphragm, which refers to plastic injection molding or other forms of cones. The polypropylene that is most exposed in daily life is a container of microwave oven and a container. .
The polypropylene material is very tough, so the audio signal is quickly absorbed and absorbed when it is transmitted. In summary, the damping characteristics are very good. In the sense of hearing, the distortion is low, and the performance in all aspects is remarkable, and it is widely popular in high-end speakers.
As for what kind of diaphragm unit to choose, it depends on the personal budget and the sound quality of the tendency.
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