How much do you know about between dynamic headphones and moving iron headphones?

In the current headphone (In Ear Earphones, Earbuds Earphones, Creative Earphones, Bluetooth Headsets, EarHook Earphones, Headband Headphones) market, the driving mode can be roughly divided into the following four main components:

Dynamic coils, moving iron, iron, static electricity and other components. Seeing this, I believe that many friends will feel very familiar. I often see people talking about dynamic headphones. What are the characteristics of each of these modes? The following begins to popularize knowledge.

The moving coil earphone is the most common and common earphone. Its driving unit is basically a small moving coil speaker, which is driven by a voice coil in a permanent magnetic field to vibrate the diaphragm connected to it. The dynamic earphones are relatively efficient, and most of them can be driven by the headphone output of the audio, and are reliable and durable. The advantage is that the sounding principle is close to the human eardrum, so the sound is naturally resistant to hearing, and the low frequency is loose and comfortable; the disadvantage is that the larger the unit volume, the greater the power required, and the higher the dynamic coil earphone has higher requirements on the front end. This means that the dynamic headphone has a requirement for the front end thrust, which is why some of the dynamic headphones use the mobile phone to play the sound effect is very general, but the sound played by the player will be particularly good. This is caused by insufficient thrust. But most of the dynamic headphones on the market now basically optimize the thrust, and the phone can be pushed up.

Inside the moving iron earplugs, the voice coil is wound around a precision piece of iron called the "balanced armature" in the center of the permanent magnetic field. This piece of iron drives the diaphragm to sound under the action of magnetic force. The moving coil directly drives the diaphragm, and the moving iron is transmitted to the center point of a micro diaphragm through a structurally rigid connecting rod, thereby generating vibration and sound. This technology is a new unit technology that has been popular in the world for nearly two decades. The drive unit can be made very small, and the moving iron unit is generally only about the size of rice. The advantage is that the unit is particularly small, generally used to make in-ear earplugs, the power required for driving is very small, the sound insulation effect is generally very good, the tone color is transparent and bright, and because it is a metal micro diaphragm, the general high frequency is relatively excellent. The disadvantage is that the sounding principle of the moving iron unit is different from that of the human eardrum. Therefore, the frequency response of the moving iron unit is generally narrow, and the sound is relatively unnatural, especially in the low frequency aspect. Nowadays, multi-unit frequency division technology is used to solve the problem that the moving iron sound is unnatural, that is, different frequency bands use different moving iron units to complement each other.

The technology that the ring iron has begun to rise in recent years (especially the Xiaomi headset is the main technology), the earplugs use a combination of moving coil unit + moving iron unit. The advantage is that the advantages are complementary, the low frequency of the moving coil unit is naturally loose, and the high frequency and high resolution of the moving iron unit complement each other; the disadvantage is that the selection of the crossover point is very difficult. Simply put, the two good sounds are combined into one. Good sound technology is very difficult and it is difficult to produce excellent products.

Electrostatic type:

We are trying to introduce some differences between the dynamic earphones and the moving iron earplugs from a relatively introductory level. They are all necessary to provide some necessary help when purchasing headphones.

Dynamic headphones are actually more types of headphones, according to different ways to have different varieties, in fact, for many non-headphones fans may not know that headphones still have so many classifications, but for the headset fans Said that these classifications are clear in the mind. For example, according to the way of switching, there are two types of moving coils and moving iron headphones that we can often see at the moment. Perhaps you don't pay much attention. Most of the headphones we use are moving coils.

Dynamic headphones and dynamic headphones are indeed the most common form of headphones, not just headphones, but all of them are mostly moving coils. Its drive unit is actually a small dynamic ring speaker. The coil in the permanent magnetic field is connected to the diaphragm, and the voice coil drives the diaphragm to emit sound under the driving of the signal current.

The structure of the moving coil earphone unit dynamic coil does not have much complicated place. It is relatively easy to make, and the technology is now mature. It has the characteristics of first model, wide frequency response and small distortion. Whether it is high-quality headphones or entry-level products, earbuds or head-mounted, dynamic headphones are the mainstream form, because the dynamic headphones are not limited by the unit area, the diaphragm size can be larger, in theory, Get better sound, but because of other factors such as production technology and tuning, this is not the case.

Regardless of the high-quality large unit headphones or the entry-level small earphone moving coil structure, the headphones of the main flow ring unit have a better sense of sound performance, the three-frequency connection is smooth, the sound field is more relaxed and natural, and the listening feeling is good, which is also Most enthusiasts know and are keen on moving headphones. However, the moving coil response speed is slow. When the dynamic earphone converts the electrical signal into a magnetic signal, it pushes the moving coil to emit sound waves. In the middle, there will inevitably be a little distortion, so the details are relatively inaccurate, but It gets better bass performance, so the sound performance will be warmer.

The moving iron earphone is not a new technology. It was used in the earphones of the telephone at the earliest time. It was widely used by hearing aids. It has only gradually been applied to music listening earplugs in the past decade. It does not sound the same as the diaphragm of the dynamic earphone. The voice coil inside the moving iron earplug is wound around a piece of iron in the center of the permanent magnetic field called the balance armature. This armature is actually the moving iron unit. The armature is driven by the action of magnetic force.

The moving iron earplug structure uses an electromagnet to generate an alternating magnetic field. The vibration part is an iron piece suspended in front of the electromagnet. When the signal passes through the electromagnet, the magnetic field of the magnet changes, and the patch vibrates to emit sound. The moving iron unit can be made very small, so it is possible to put a plurality of units into each of the ear shells, which is commonly referred to as a moving unit of 2 units, 3 units, 4 units and the like.

Shure SE535 headphone structure diagram moving iron earphones have higher vibration efficiency, so the response speed is very fast, and the playback of details is excellent. It is very good at expressing the details and layering of sound. However, the sound lacks music, the tone is cold, not so warm, lacks certain emotion and momentum; the frequency response range of moving iron earplugs is also narrow, but because the sound unit is very small, it is used in multiple units. The crossover line can be improved in sound and the frequency response range is also widened.

Logitech UE 900 flagship four-unit moving iron earplugs Jieshi X10 single-unit moving iron earphones are also limited to the sound principle, can only be designed as a closed structure, and for earplugs, he can not be made into open and head-mounted formula. The production cost of moving iron headphones is relatively high, and it has not become the mainstream listening product for mass users. However, due to the many advantages of moving iron headphones, it has always been a pet of niche music enthusiasts. However, with the increasing popularity of music listening and the pursuit of high-quality sound, more and more people are paying attention to moving iron headphones.

The difference between dynamic headphones and moving iron headphones. So from the above we can easily see the difference between moving iron headphones and moving ring headphones, but they may be slightly abstract when they are introduced separately, not so intuitive, so we are below Compared with the dynamic headphones, the advantages of the advantages are that it is easier to understand the difference between the two headphones.

Sensitivity: The structure of the moving iron unit is almost a closed container. It only needs a small current to drive it, so the sensitivity is also more dominant in moving iron headphones.

Acoustic music: It is generally believed that the dynamic headphones have a better sense of music, while the sound of the moving iron headphones is cold and tough, but the mellow and smooth, the real moving iron headphones have this problem, making the emotional performance of the sound is not so prominent.

Sound field: Since the moving iron earphones are all closed structure, the performance on the momentum has always been a defect. The dynamic structure earphones are excellent in this respect, especially the high-quality open dynamic earphones are undoubtedly advantageous.

Sound density: The sound density of the dynamic headphones is slightly loose and not compact enough, and the moving iron headphones are obviously much stronger than this, and the compactness is very good.

Frequency response speed: The vibration efficiency of the moving iron earphone is high, so the corresponding speed is faster than the dynamic earphone, and the transient performance is also relatively fast.

Frequency response curve: The unit of the dynamic earphone is combined with glue and coil. During the different temperature and humidity and during use, the frequency response curve will change. The moving iron unit is made of metal material, which has better stability and sound quality.

Sound insulation: The dynamic earphones have a large unit area and require more space and air to participate in the vibration process, so excellent sound insulation cannot be guaranteed. The moving iron earphone can effectively reduce the area of the ear part, and can be placed in the ear canal part of the deep root, so the soundproof effect is naturally more dominant. The sound noise reduction performance of a good soundproof earphone can reach a few very shells, which is unmatched by dynamic headphones.

Volume: The characteristics of the moving iron unit make the moving iron earphones only have an earbud structure, and the volume is very small, and even a very small dynamic ring earphone is difficult to achieve the volume of the single unit moving iron earphone.

Price: Due to the complicated manufacturing process and high cost, the moving iron unit has always been difficult for many people to accept. Even the cheaper moving iron headphones have to be several hundred yuan. This is not the case in previous years. The reason for easy popularity. The cheaper dynamic headphones can be bought for a few dollars, which is a different day. However, the price of moving iron headphones has gradually declined in recent years, and with the increasing number of enthusiasts, this situation has gradually changed.

More intuitive form of presentation Of course, if you think that the above text is too boring, we have created a more intuitive form for everyone to watch, although the expression may not be as comprehensive as the text, but want to The quicker way to quickly understand the difference between the two headsets, the following table is still useful.

The difference between the dynamic earphone and the moving iron earphone is worth mentioning. At present, the brand has been able to combine these two kinds of energy conversion methods beautifully. The combination of moving iron and moving coil makes the advantages of the two earplugs combined. It not only guarantees the dynamic sense of the moving circle, but also guarantees the analysis of the moving iron. It is undoubtedly very beautiful. The AKG K3003 is such a revolutionary representative. However, the earplugs of tens of thousands of yuan are considered to be of high quality in the earplug products, which is not the price that most people can bear. However, in the near future, the earplugs combined with the advantages of this kind of iron and iron will gradually mature and the cost will decline. Come, we are very much looking forward to it.