A Headset mainly consists of four parts: head, left and right sound units, earmuffs and lead.

With the function is fixed around the sounding unit, will be on both sides of the head, its structure and its connection method and unit determines the headband and earmuffs on head pressure, affects the Headset wearing comfort.

Ear is the head and the sounding unit contact parts, it is vital for the moving coil type Headset, its function is to ensure low reflected back, low frequency playback. Earmuff generally have two kinds of style, a kind of pressure in the ears, called pressure ear ear (Supra-aural), another ear muffs cup-shaped, around the ears, called around the ear ear (Circumnaural). Ear to the soft and comfortable, its interior is generally filled with sponge, outside covered with leather or cloth. Earmuff material used in the absorption of the medium and high frequency, it make the ears and membrane forming a distance, and a cavity is formed in the Headset and the head. Large round ear muff large interior space, the sound can be applied to the ear, forming good sense of space. A good design of the Headset have fully considered the earmuffs role, so in the high-end Headset earmuffs can not be damaged or replaced.

Headset lead is connected to the line Headset output end of the amplifier circuit and Headset voice coil, oxygen free copper quality Headset line usually adopts multiple regional core (OFC) line, through strict insulating and shielding, eliminate the interference of copper impurity influence on signal transmission and external clutter. At the end of Headset line plug, two kinds of specifications: 6.35mm and 3.5mm, namely the size of the plug usually said, 6.35mm plug for professional audio and civil audio devices, 3.5mm plug for portable devices. General high fidelity Headset will provide a plug converter, ensure the use of Headset in device. Plug in the high-end Headset is plated with gold, it is not for the beautiful, mainly in order to prevent the plug oxidation affect the sound, because the golden slippery soft, can provide the contact area as large as possible. Low Headset often use nickel plating plug, although this can also prevent the oxidation, but has a negative impact on the sound.

The sounding unit Headset is the most complex, the highest technical content of some Headset design. Moving coil Headset principle and dynamic work the same speaker, audio input signal after the voice coil, the electromagnetic field generated by the voice coil with the signal change, moving electromagnetic field and magnetic circuit changes promote the voice coil and diaphragm, diaphragm promoting air sounding. Moving coil Headset sounding unit consists of three parts: a magnetic circuit system, a vibration system, cavity and hole acoustic structure.

The magnetic circuit system is composed of permanent magnet, the plate and the pole shoe, have a direct impact on the Headset performance and reliability, permanent magnet side plate type, the other side is a "pole T" shaped, circular magnetic gap formed a smaller plate and the pole shoe of vibration system, a voice coil the hanging in the gap. The permanent magnet is usually used for high fidelity Headset neodymium magnets with excellent performance, Headset models earlier using samarium cobalt magnet expensive, low Headset generally use the ferrite. Design of magnetic circuit system is more complex, like SENNHEISER HD580, HD600 such high-grade Headset its magnetic circuit adopts the computer aided design. The production process of magnetic circuit is another aspect of its performance. The magnetic circuit system design and manufacturing quality can effectively control the vibration system,

High sensitivity, low distortion, good transient and frequency.

Vibration system is composed of a voice coil and a vibrating membrane. The diaphragm is the acoustic radiation element, push the air vibrate, directly affects the frequency response and sensitivity. It depends mainly on the performance of manufacturing material, shape and manufacturing process. Manufacturing diaphragm material requirements of mass per unit area as small as possible, high mechanical strength, large damping. The mechanical strength is high, the quality of the light frequency range is wider, the effective output sound pressure level is higher; large damping, in large signal distortion. Now the diaphragm using polyester film is easy to hot forming, light quality, good rigidity, some companies have developed new materials for diaphragm, such as SONY, was isolated from Acetobacter cellulose manufacturing "biological membrane" for its senior Headset and earplugs, excellent high frequency. Diaphragm usually rounded, center design for the uplift of the arc, the design around the ribs, the effective area can strengthen the diaphragm and diaphragm rigid. It is sometimes necessary to pressure equilibrium, non vibration part is processed in a small hole diaphragm. The high technology manufacturing diaphragm, in the processing of various difference control very strictly.

The voice coil is a coil Headset vibration source, most of the parameters Headset, such as impedance, sensitivity, rated power are both associated with it. The performance of the voice coil mainly depends on the material and the coil turns the voice coil wire length. The voice coil material is generally copper enameled wire, senior Headset often copper enameled wire and copper clad aluminum enameled wire, which has the advantages of copper enameled wire, but lighter, but also the use of silver as the voice coil material. Section of the voice coil of the enameled wire is circular, triangular and hexagonal section also, this line more closely integrated, inter wire capacitance decreases, the voice coil quality further reduce. The voice coil size also has some influence on the Headset performance. The voice coil is vibration in the magnetic gap, its diameter should guarantee the voice coil in the magnetic gap central, in vibration without plate and the pole shoe together. On the other hand, due to the magnetic field in the magnetic gap electrode surface is not uniform, coil movement in non-uniform magnetic field will reduce the conversion of electric energy efficiency, and caused the distortion Headset, so the voice coil height should have an appropriate choice.

Cavity and the hole acoustic structure is an important part of Headset performance. The fixed magnetic system and vibration system is a plastic frame, called mesa, diaphragm edge bonding in this frame. This framework should have sufficient rigidity, not because of the fixed magnetic circuit and the vibration part deformation, but also to minimize the vibration transmission. Behind the magnetic circuit and vibration system is Headset shell, a cavity is formed between the shell and the mesa, size, shape, is filled with damping material the cavity location, type, quantity Headset frequency response, in general the cavity frequency more access to high quality, deep dive.