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Multimedia Speakers are audio output devices that can be connected to various devices, and their sound effects are very important to users. Compact multimedia speakers can not only meet users' space-saving needs, but also need excellent sound performance to attract users' favor. Excellent quality: Due to space constraints, small speakers usually cannot have long bass tube designs like large speakers. The sound effect needs to be balanced by optimizing the internal structure of the speaker and the sound transmission path. High-fidelity sound effects are required: For compact speakers, ensuring high-fidelity sound effects needs to be achieved by optimizing the speaker's drive unit and tuning technology. Appropriately enhance the resolution and dynamic range of the speakers, making the transmission of audio signals more accurate and delicate, thereby producing more realistic sound effects. Good dispersion performance is required: In a compact speaker, the speaker driver unit is relatively small, so it is very important to design a reasonable speaker layout. Good diffusion performance can make the sound of the speaker more three-dimensional, and users can feel a wider and more realistic sound effect when listening to music. Requires certain power and volume output capabilities. Reasonable power output and volume adjustment can allow users to obtain satisfactory hearing effects in different usage environments. Some common types of multimedia speakers: Bluetooth Speaker: A wireless speaker that can be connected to other devices, such as mobile phones and tablets, through Bluetooth technology. Wireless speaker: A speaker that can be connected via a wireless signal and can be controlled by a mobile phone or other device. Mini Speaker: A compact speaker that is very portable and suitable for use on the go. Wi-Fi speaker: A speaker connected through a Wi-Fi network that can connect wirelessly with other devices.

The sound quality of Mylar speaker is generally considered to be relatively good, with lower distortion and a higher frequency response range. Because polyester film has high strength and rigidity, it produces clear, accurate sound. 1. Wide frequency response range: It has a wide frequency response range and can perform well in both low and high frequencies. 2. High sensitivity: Higher sensitivity means greater ability to convert electrical signals into sound signals. This means it's better able to capture and reproduce audio details, delivering clearer and more realistic sound. 3. Low distortion: With a lower distortion level, the audio signal can be reproduced more accurately, avoiding sound distortion and distortion. 4. Lightweight and portable: Usually very light and portable, suitable for use on mobile devices and portable audio equipment. For example, a Bluetooth speaker. This allows users to enjoy high-quality music anytime and anywhere without being limited to a fixed audio system. 5. Strong durability: It has strong durability and can withstand higher power input and long-term use without damage. This allows them to maintain consistent sound quality in a variety of applications. These features allow it to provide more realistic clarity and realistic, pure sound quality. However, the experience of sound quality will still vary depending on factors such as personal hearing differences and the cooperation of audio equipment. Whether it's good or bad also depends on other factors, such as the speaker's design and build quality. Polyester diaphragm speakers are widely used in speakers, headphones and other audio equipment, such as tablet speaker, navigator speaker, etc.

Multimedia Speakers come in the following types: 1. 2.0 speakers: It consists of two speakers, one for the left and right channels, without a subwoofer, and is suitable for general music appreciation and movie watching. 2. 2.1 speakers: It consists of two speakers and a subwoofer. The left and right channels are provided by two speakers, and the bass is provided by the subwoofer. It is suitable for movie watching and music appreciation. 3. 5.1 speakers: It consists of five speakers and a subwoofer, including front left, front right, center, rear left, and rear right speakers and a subwoofer. It is suitable for home theater systems and can provide a more realistic surround sound effect. 4. Soundbar speaker: Integrated design, usually composed of multiple speaker units, suitable for use with TVs to provide better audio effects. 5. Bluetooth Speaker: Built-in Bluetooth function, it can wirelessly connect to mobile phones, tablets and other devices for music playback through Bluetooth. 6. Mini Speaker: Small and lightweight, suitable for outdoor activities or travel. They usually have built-in batteries and support wireless connection and music playback.

Micro speakers have a wide range of applications in today's market. They are commonly used in mobile phones, laptops, tablets, and other portable electronic devices. Micro speakers are also used in home audio systems, car audio systems, and other audio equipment. In recent years, the demand for micro speakers has been increasing rapidly in the Asia-Pacific region, especially in China. This is due to the rapid growth of the consumer electronics industry in China and the increasing popularity of portable electronic devices among Chinese consumers. In addition to China, other regions such as North America and Europe also have a high demand for micro speakers. This is because these regions are home to many leading manufacturers of consumer electronics and audio equipment. Overall, the market for micro speakers is expected to continue growing in the coming years, driven by the increasing demand for portable electronic devices and the growing popularity of smart home systems.

20230130 We restart our XDEC fatory and welcome our workers and friends come back to our factory. We brough great wish to get better life and want earn many mioney to make our lifes better. We also have many speaker drvorder needs to do ,they are carry with client truth and great wish. we XDEC hope can rely on clients order, with these speaker driver, box speaker, dynameic speaker, waterproof speaker to transfer a good and stable nice supplier impression. Make the product can speak its good quality and stable quality, let us XDEC speaker can win a good reputation in the sound feild in the world. we will keep a carefull attidude and resiponsiblity to do well in our speaker design, produce, test amd sa=ell. Let more and more people know us XDEC speaker, and let the world hear good sound !

Waterproof speaker is a kind of moisture-proof, anti-corrosion and waterproof process on the basis of traditional professional speakers, and a full range of waterproof treatment is done on the inside and outside of the box, so as to be suitable for relatively harsh environments with humidity, high temperature, rain, and exposure to the sun. A speaker for satisfying music effects. For example, speakers for sound reinforcement of musical fountains in outdoor squares and speakers for large-scale outdoor performances. develop Domestic waterproof professional speakers emerged in about 2000. They can be classified into: public broadcasting boxes and professional sound reinforcement boxes: Public address waterproof speaker Public broadcasting is divided into indoor boxes and outdoor boxes, which are generally used for background music. Outdoors are mostly plastic rockery, sound columns and other various shapes. The waterproof treatment of public broadcasting is mainly the plastic treatment of the box. There are many ceiling speakers used indoors, which are mostly used in shopping malls, hotels, hospitals, schools, governments and other public places. It is determined by the structure of the speaker itself, and the public broadcasting is mostly constant pressure, so the overall power will not be very large, the sound pressure is relatively small, and the dynamics are small, only to meet the effect of background music. Professional sound reinforcement waterproof speaker There are two types of waterproof professional amplifiers according to the box: one is the professional box with plastic box, the box is made of plastic material, the waterproof effect is OK, but most of the speakers have low power and dull sound, not as good as plywood sound quality of the speakers. The second is the professional plywood box waterproof speakers that are used more on the market. The higher-end plywood cabinets are mainly waterproof cabinets made of imported Finnish birch boards. However, due to the high cost of imported plywood speakers, most domestic manufacturers mainly use domestic birch materials or other wood materials. The first thing that waterproof speakers do is to process the raw materials of the box.

2022 is new year start for everyone, 2022 also is the "Tiger year" in China on the lunar calender. We XDEC are so glad and excited to gather our hard-working worker to gather in our company to celebrate the 2022 new year clong. Tiger, is majetic-looking anamal, act fast, every move with strong energy ! King of the woods! it's the represent of power and energy. Tiger is loved by so many people, so we Chinese people sincerly wish everyone can act like the tiger, move like tiger, have the strong power, work with furous energy, and overcome all the problem and make our future better ~ 2022 is a new start in many thing, keep going, keep learning keep fighting, will have a new ending in 2022~

What is the speaker distortion? As the speaker manufacturers of the sound industry,facing many customers to issue such a question,in fact,the speaker distortion simple point is the speaker output signal in the process of waveform and input waveform is not consistent.Loudspeaker distortion mainly has the following three indicators. 1.Intermodulation distortion (IMD) Synthesizing the harmonic signals of 125Hz and lkHz output by the intermodulation distortion meter,input the amplitude of 4:1 into the measured amplifier,and measure the intermodulation distortion coefficient from the rated load. 2.Transient intermodulation distortion The square wave signal of 3.15kHz and the sinusoidal wave signal of 15kHz are mixed according to the peak amplitude ratio of 4:1.After the amplifier,the percentage of the effective value of the product of all the new intermodulation distortion and the original sinusoidal amplitude is increased.If the amplifier uses deep loop negative feedback,transient intermodulation distortion is generally larger,reflecting the sound dull,stiff,no sense of presence;On the contrary,the sound is smooth,delicate and natural. 3.transient distortion (TIM) Square wave signal input to the amplifier,its output waveform envelope to maintain the ability to express.If the conversion rate of the amplifier is not enough, the square wave signal will be deformed and produce transient distortion.It is mainly reflected in the signal of rapid musical mutation,such as percussion instruments, piano,xylophone,etc. If the transient distortion is large,the clear music will become unclear. The above parameters, is to judge the pros and cons of a loudspeaker important indicators.

Shenzhen speaker manufacturer,teach you how to prevent speaker unit damage,XDEC speaker manufacturer have 12 years of research and development production,speakers in our life is a common electronic product,maintenance of speakers can greatly increase their service life. Under normal conditions,loudspeaker damage is divided into two kinds:mechanical damage and overheating damage.XDEC speaker manufacturer will teach you how to prevent speaker unit damage. First,mechanical damage:in brief,it is the power range and input imbalance. Each speaker unit is designed to withstand a certain amount of power.For example,150watt average withstand power, when entering a 500W power rating, so what will the unit do? Of course, such a large average power invasion,the first damage is the mechanical balance we have designed,so that the voice coil is forced to leave the magnetic gap,so that the damping of the edge of the paper basin is destroyed,the damping of the reed is invalid,and finally,when the power disappears,the voice coil can not automatically return to the origin,which is what we call mechanical damage. "Choose the right speaker,and each speaker has its own range of 150WRMS,so why would we give him 500WRMS?" The reason that another loudspeaker damage is overheat damage: overheat damage phenomenon is because high temperature makes sound coil line burns off,a lot of people think this is caused because of high power.But the more important reason is "audio overheating damage".It is known that distortion is the natural enemy of sound amplification.So here we put forward another theory of voice coil burn,not necessarily high power,and very likely is normal power.As rated at 150WRMS,the voice coil is still the cause of burn - distortion caused burn. How to prevent distortion is a university ask,if distortion can not happen to the audience is a great Gospel,but here XDEC speaker have to say that there are many methods to prevent distortion theoretically,but in fact we can not fundamentally solve the problem of distortion.This distortion is often sudden,just as a famous singer cannot be absolutely sure not to break his voice on stage.

Before we xuanda speaker factory has brought the article related to speaker parameters,today continue to bring the last article about speaker parameters to you! 1.Directivity Directivity refers to the characteristic that the sound pressure radiation ability of loudspeaker varies with frequency in different directions,or the ability of loudspeaker sound wave to radiate to all directions of space.The higher the signal frequency of the input speaker, the stronger the directivity. 2. Total quality factor The total quality factor of the horn,also known as Qts value,is used to reflect the speed of energy consumption of the vibration system,that is,the loss of the vibration system. 3. Equivalent volume Speaker equivalent volume refers to the equivalent air volume of speaker vibration system. The larger the caliber of the speaker,the larger its equivalent volume. 4. Magnetic induction intensity and flux Magnetic induction intensity,we xuanda speaker factory also called it magnetic gap intensity, used to represent the quality mark of the magnetic field intensity in the speaker air gap. The magnetic flux is equal to the product of the magnetic induction intensity and the average area of the air gap. 5. Equivalent vibration radius The speaker's equivalent vibration radius is also known as the effective area of the diaphragm. It represents the area that contributes to sound radiation,generally refers to the length from the center of the diaphragm to the middle of the ring. 6. Linear range The linear range of speaker refers to the maximum linear displacement of the diaphragm.When the speaker is working,if the displacement of the diaphragm exceeds the linear range,the playback distortion will increase.

Our daily contact with the sound, the most intuitive feeling is the bass effect of sound first, and then just the tenor. Therefore, we will understand what factors have the biggest impact on the sound quality of the bass speaker. Firstly, the frequency is affected. Through the frequency divider, the bass monomer is only responsible for a certain low frequency, and the upper limit of the frequency response of the monomer itself should be one or two times higher than the frequency divider, so as to ensure that the working frequency is in a relatively linear area and reduce the use of additional components for correction. For example, at a crossover point of 500Hz, the effective frequency response of the bassoons needs to be 1000Hz, or even 1500Hz, and the more linear the better. The second is to withstand the power, because the power of the woofer takes up more than half of the input of the whole speaker, the power bearing of the subwoofer, become the basis of the speaker this parameter. Then is the impedance, speaker is generally marked according to the characteristics of the bass monomer, it is possible that other frequency band impedance is lower than the nominal impedance, the lowest impedance is not more than 20% or many may be greater than 100%, no matter the impedance is high or low, the transistor amplifier brings different degrees of difficulty to promote. A speaker with a rated impedance of 8 ohms is easier to push than a speaker with a rated impedance of 4 ohms. Speakers above 8 ohms will cut transistor amplifier output. The fourth is sensitivity, high sensitivity has two advantages, one is the amplifier output can be smaller power; Second, monomer does not have to eat too much power, can produce enough sound pressure. For each additional 3dB of horn sensitivity, the required power is halved and the same sound pressure is obtained. The fifth is diffusion (directivity), when the wavelength is close to the caliber size of the bass, sound diffusion will narrow. The higher the frequency, the shorter the wavelength and the narrower the diffusivity. Based on this characteristic, the coordination and selection of woofer caliber and crossover point need to be considered carefully. Reverse perforation of bass to the ground 360 degrees of sound, can improve bass diffusion, the establishment of a large sound stage. In principle, the larger the bass, the lower the frequency response range, and the dividing point should move down. High fax requires that the horizontal diffusion of bassoons is ±60 degrees and does not exceed -6dB; Vertical ±20 degrees is -6dB. The characteristics of vertical diffusion Angle of monomer are more strict than that of horizontal Angle, which accords with the auditory characteristics of human ear. Horizontal is more sensitive than vertical. Finally, Q value, according to the characteristics of the bass, basically determines the damping matching requirements between the speaker and the amplifier (box design and sound-absorbing cotton are affected). High Q speaker with high damping characteristics amplifier; Low Q speakers with low damping characteristics of the amplifier, so that the sound control and music aftertaste does not tilt to either side. The sound-absorbing material in this soundbox can change the total Q value of the speaker. These basic speaker parameters will affect the sound quality of the woofer, if you want to know more come to XDEC speaker manufacturers and professional people to learn together.

Most people know that the speaker has rated impedance, power, frequency characteristics, sensitivity, distortion of these parameters, but the speaker is far more than the front of these parameters, there are many, but we usually do not have a thorough understanding of the following XDEC speaker manufacturers will give you one way! 1. power The power of the speaker is divided into rated power, minimum power, maximum power and instant power, all in W. Rated power, also known as nominal power, refers to the speaker for a long time normal continuous work without obvious distortion of the input average power. Minimum power, also known as starting power, refers to the benchmark electric power value that the speaker can be pushed to work. The maximum power also calls the maximum carrying power, it is the maximum input power that can be borne when the speaker works continuously for a long time. Instantaneous power is also called instantaneous bearing power, it is to point to the speaker in a short time (10ms) can bear the maximum power, generally 8~30 times of rated power. 2. The rated impedance The rated impedance of the speaker is also known as the nominal impedance value, which is the minimum impedance of the speaker after the formant peak, including 4Ω, 6 Ω,8 Ω, 16Ωand 32 Ω. The rated impedance is usually about 1.1 times of the dc resistance of the voice coil. 3. The resonant frequency Resonant frequency refers to the lowest frequency that the loudspeaker can replay, which is related to the size of the loudspeaker caliber. The resonance frequency of a woofer generally decreases with the increase of its caliber. The resonance frequency of a 6in (in=0.0254m) woofer is about 50HZ, that of an 8in woofer is about 40HZ, that of a 10in woofer is about 30HZ, and that of a 12in woofer is about 20HZ. Resonant frequency is an important parameter that determines the low frequency characteristics of loudspeaker. The lower the value is, the better the quality and intensity of the bass replayed by loudspeaker (speaker). 4. Frequency characteristics The frequency characteristic of the speaker refers to the rule that the output sound pressure on the reference shaft of the speaker changes with the frequency of the input signal when the signal voltage of the input speaker is constant. It is a frequency response curve that changes with frequency (frequency response for short), which reflects the ability of speaker to radiate sound waves of different frequencies. The frequency response curve of the speaker is irregular continuous curve with many peaks and valleys. The resonant frequency of the speaker is regarded as the low frequency unlimited frequency, and the intersection of the high frequency end of the frequency response curve is regarded as the upper frequency. The frequency range between the lower limit of low frequency and the upper limit of high frequency is called the effective frequency range of speakers by XDEC manufacturers. The flatter the speaker frequency response curve is, the smaller the frequency distortion is, and the wider the effective frequency range is. The frequency range of the general woofer is between 20HZ~3kHZ, the frequency range of the mid-range speaker is between 500HZ~5kHZ, and the frequency range of the tweeter is between 2~20kHZ.

Blue tooth speakers with small and convenient to carry by the outdoor activities of the love, if you can make a few so delicate and lovely Blue tooth speakers to use, is not very thoughtful? So how to make a blue tooth speaker? Let's have a look at the self-made methods of two Blue tooth speakers. Methods one 1. Prepare tools and raw materials Get a stereo Bluetooth headset, preferably of good quality, an audio cable, a black tape, a pair of scissors, and a stereo. 2. Production methods and steps Will stereo bluetooth headset. Apart from the edge of the area, the motherboard aside retention, and then remove the battery out, cut through the red and black wires, take out one by one to see the inside of the parts, remember the microphone placed some carefully, then can cut open a audio line, the inside of the line is divided into two strands, one of the strands respectively connected to the red and the black line. Connected and ready to use black tape wrapped, this is the left channel bluetooth speakers, audio line another will pick up on the mouth of the charging interface, that is, headphones, headphones to head cut off, and can use fire to melt outside wrapping, the copper, so as to ensure that its wire performance, also meet good package became a right channel. Plug the other end of the audio cable into the audio input end of the audio, you can turn on the Bluetooth pairing mode, as long as you listen to the voice prompt after the pairing is successful, the production is completed, the appearance of the design according to their own preferences. Method two 1. Collect all parts Prepare bluetooth audio USB, micro USB charging module (with protection), 5V USB output and 2x5W amplifier, add a mono amplifier if needed, 3.7V lithium battery, 3-position switch, 2 speakers, rubber radiator, wires, support material frame, etc. 2. Assembly and welding According to the introduction of method 1, all the parts and wires have been connected, and then we can start to deal with Bluetooth USB and voltmeter. Install and weld all of them, so that the main body is ready. The first gear of the 3-position switch is AUX input, and the second gear is Bluetooth mode. 3. Making packing and auditioning The box of bluetooth speaker can be made of wood or plastic, etc. Wood is more textured, and the audio sound produced is also more effective. After the appearance is installed, it can be tested.

XDEC speaker factory taught you to look at the parameters of the speaker to identify the pros and cons of the speaker before,but some speakers do not have these data to refer to the case,how to do? There is another way,which is to hear with your ears. 1.loudness:in loudness,good sound quality sounds appropriate and comfortable. 2.clarity:the wonderful sound quality level is very clear,good transparency,every word can be heard clearly. 3.fullness:full alto voice and bass,moderate treble,warm,comfortable,elastic.If the reverberation time is short,especially the low frequency band reverberation time is shorter than the middle frequency band,its fullness will not be very good;The output frequency characteristic of sound system is poor,lack in bass,such sound can appear dry and feeble,also do not speak of plump. 4. Balance:refers to the correct proportion and phase coordination of output power between the left and right speakers,the main speaker and the auxiliary speaker.Stereo left and right sound channel consistency is good,sound - like normal.Here,we XDEC speaker manufacturers remind you,if the sound is sometimes offset and not enough coordination,it is not good sound quality. 5.the sense of environment:the sense of space sound is good,the whole feeling of lifelike,with immersive to describe good sound quality is the most appropriate. 6.intimacy:It is usually said to be vivid,that is,to hear the voice there is a sense of communication,talk sense.Mediocre or poor sound quality won't do it,and it will make you feel urgent and distant. More horn consulting,industry trends,all in XDEC speaker manufacturers.

To put it bluntly, the pot machine is a fast aging and stable processing method for its equipment. For earphones, the bonding machine is the folding ring of the diaphragm. The mechanical compliance of the folding ring of the diaphragm of the new earphone is poor, resulting in relatively large distortion. After a period of use, the compliance gradually gets better, and the distortion will gradually fall to the normal level. Do you know how to make a new earphone? Next let us understand the new earphone professional pot machine method. Professional pot machine method: The cooker first needs sound software, and prepare the relevant CD, so that the cooker process can start. If you can find pink noise frequency scan all audio CD is again good but, if there is no, then need to download the frequency generator to on a computer, this kind of voice frequency, can be manually set the frequency range, the scanning time, and can choose the types of sound wave, is a square wave, sine wave and triangle wave, etc., in a word, Naturally, the frequency range of sound should be between 20Hz and 20KHz. In a full-frequency scan, the period of full-frequency scan should be extended as long as possible. It is recommended that the setting time of full-channel scan should be at least 30-40 seconds. If you are using the whole frequency scanning CD, is the best in the CD disc, select, and Repeat play this song, if there is no Repeat playback function, it requires repeated Repeat them to Repeat the replay, general total volume knob to adjust to between 40% and 60%, considering each person's ear for the spectrum sensitivity of the receiving is different, Therefore, the volume is recommended to the best and comfortable feeling of the ear, not too large should not be too small, so are adverse. Consider from the safe respect of earphone or acoustics, can listen to the loudspeaker or earphone when the highest and lowest low frequency point makes sound first before broadcasting have the circumstance that too much load makes sound, lest cause the damage that produces equipment, can undertake after confirming without error. The above are more professional scanning spectrum knowledge of pot machine, only suitable for a small number of people to use, without professional knowledge, you can not use the above method. Without a professional knowledge of friends to operate the steps a little careless, will be on your headphones or audio hardware with irreparable fatal consequences. Recommended methods for pot cookers: In fact, I do not advocate deliberate pot theory or professional pot method, but rather the natural listening pot method of non-professional users, because the music of non-professional users is often multi-style and multi-type, so the natural listening pot method is a more appropriate method. Natural to warm method is refers to the volume after new headphones to remain below 60% 30% or more slowly to the can (specific volume matching to the human ear in quiet or noisy environment to choose the best comfortable hearing shall prevail), in such a natural environment for headphones - or audio experience after a month or so to the equipment to achieve a better state.

Application According to the internal relationship between the selection of adhesives in different parts of the functional loudspeaker, as well as the special application of various adhesives in the loudspeaker, reasonable selection can bring twice the result with half the effort.The application of adhesive with different characteristics in different parts of loudspeaker has different effects on sound quality. And simply compare the advantages of using different types of adhesives in the current central adhesive position.Provide technical reference on adhesive for speaker designers. First, the role of adhesive A. Types and functions of adhesives Adhesive curing can be divided into heat curing, UV curing, wet curing, heat-UV curing and cationic curing; According to the chemical properties gram is divided into epoxy, polyurethane, silicone, acrylic acid and other types;According to curing properties, it is divided into three categories: thermocuring, thermoplasticizing and elastomer. Two, according to the role of classification A, structure type: with high mechanical strength, used for the two materials together forever nine, and strong bearing capacity, the hardness of A ingot in the curing state. B, non-structural: with the mechanical strength of one ingot, used to temporarily connect objects with small load requirements, non-structural adhesives are also hard in the cured state. C, thermosetting type: crosslinked polymer formed by chemical reaction curing, curing after heating will not soften, can not be re-bonded. Thermosetting: Thermosetting adhesives are crosslinked polymers cured by chemical reactions and will not be softened by reheating after curing. Thermoplastic: Thermoplastic adhesives do not form crosslinked polymers like thermoset, so they can be re-softened and re-bonded. He is a single component system, hardening by high temperature cooling, or hardening by evaporation of solvent. Elastic: Elastic adhesives have high elongation and can be made from synthetic or natural polymer solvents in the form of latex. Synthetic: synthetic adhesive is made up of thermoset, thermoplastic, and elastic adhesive. It takes advantage of the advantages of each material, so it has better comprehensive performance.

Magnetofluid can reduce the working temperature of the voice coil, improve the rate bearing capacity of the tweeter, improve the frequency response, help the voice coil to maintain the center position, reduce distortion and power compression effect, improve the dynamic performance, prolong the service life of the speaker. What is magnetofluid? A magnetic fluid (perhaps called a ferrofluid or magnetic fluid) is a brownish black liquid magnet that consists of ultrafine magnetic particles about 10 nanometers in diameter suspended uniformly in a synthetic oil carrier. What is the effect of magnetic fluid? After adding a certain amount of magnetic fluid into the gap formed by T iron and Wasi of the loudspeaker, the power of the loudspeaker will be improved obviously and the service life of the loudspeaker will be prolonged. In general, the power of the speaker is limited by the heat resistance of the voice coil. The greater the power, the greater the heat, causing the temperature of the voice coil to rise sharply, and when the voice coil material reaches its limit, the voice coil will burn. And the heat conduction coefficient of magnetic fluid is far greater than that of air, it can effectively send out heat energy through T iron, Washi and basin frame in the air, thus preventing the voice coil from being burned, delaying the aging of the voice coil material and binder, thus prolongs the life of the speaker. Improve the frequency response characteristics, reduce the distortion of the loudspeaker, magnetic fluid has a certain damping, loudspeaker in its lowest resonant frequency (F0) near the frequency response curve will have a peak, due to the large amplitude of the diaphragm distortion. This is a flaw loudspeaker makers hope to overcome. The frequency response curve of loudspeaker at F0 can be smoothed by using the damping effect of magnetic fluid with proper viscosity on voice coil movement. Thus, the frequency response characteristics are improved, which is beneficial to simplify the design of the frequency divider circuit. The magnetic fluid also has the function of center positioning, which can prevent the phenomenon of wiping the voice coil in the large amplitude. More loudspeaker consulting, industry trends, all in Xuanda electronics, many years of r & D production experience, strength is trustworthy, welcome to consult.

1. sound absorption board installation precautions ① keep the installation site dry, the temperature is not less than 10℃, and the maximum humidity change value after installation should be controlled in the range of 40% ~ 60%. The installation site must meet the above temperature and humidity standards at least 24 hours before installation. ② Before installing the sound-absorbing board, check the model, specification, size and quantity of the sound-absorbing board to avoid various problems during installation. The sound-absorbing board must be placed in the place to be installed for 48 hours in order to adapt to the indoor environment and finalize the design. ③ the wall covered by sound absorption board must be installed according to the design drawing or construction drawing requirements of the keel, and the keel leveling treatment, the surface of the keel should be smooth, no rust deformation. ④ the structural wall should be processed before construction according to the building code, and the size of the keel layout must be compatible with the layout of the sound-absorbing board. Wooden keel spacing should be less than 300mm, light steel keel spacing should be less than 400mm. Keel installation should be vertical with the length of the sound-absorbing board. ⑤ usually the distance from the surface of the wooden keel to the base should be determined according to specific requirements, generally 50mm. The margin flatness and verticality error of wooden keel should not be greater than 0.5mm to avoid affecting installation. ⑥ keel clearance if the need to fill, then it should be installed in accordance with the corresponding design requirements, processing, and to ensure that it will not affect the installation of the sound absorption board behind. 2.sound absorption board installation method ① first measure the wall size, confirm the installation position, horizontal and vertical lines and wire sockets, pipes and other objects cut space reserved size. According to the actual size of the construction site calculation, and cut part of the sound-absorbing board and lines, and for wire socket, pipe and other objects cut empty reserved. If the opposite side has symmetry requirements, especially to pay attention to the size of the partial sound-absorbing board, to ensure the symmetry on both sides; Lines mainly include receiving line, outer corner line, connecting line. ②installation of sound-absorbing board: the installation sequence of sound-absorbing board should follow the principle from left to right and from bottom to top. When the sound-absorbing board is installed horizontally, the notch is upward; When installed vertically, the notch is on the right side. Partial real wood sound-absorbing board has pair of decorative pattern requirement, its each elevation should make up good number according to sound-absorbing board beforehand in turn from small to large undertake installation. And the number of sound-absorbing board also should follow from left to right, from bottom to top, number in turn from small to big order. ③ sound-absorbing board on the keel fixed: wooden keel with nail installation. The sound-absorbing board is fixed on the keel with shooting nails along the toning and groove of the board. Shooting nails must be more than 2/3 embedded in the wooden keel, and must be evenly arranged, and requires a certain density. The number of shooting nails connected with each sound-absorbing board and each keel is not less than 10. The sound-absorbing board is installed horizontally with the concave upward and installed with installation accessories. Each sound-absorbing board is connected in turn. When the sound-absorbing board is installed vertically, the notch is on the right, and it is installed in the same way from the left. Two sound-absorbing board end must leave not less than 3mm gap. Note the installation of sound-absorbing board Sound absorption board installation should pay attention to paint color difference, solid wood veneer sound absorption board color difference is a normal phenomenon. There may be color differences between the paint finish of the sound-absorbing board and the hand-painted finish of other parts of the installation site. In order to keep the paint color consistent, it is suggested to adjust the color of other parts of the manual paint according to the prefabricated paint color of the sound-absorbing board after installation; Or can advance request, by the manufacturer to provide without prefabricated paint treatment of solid wood veneer sound-absorbing board. In addition, it should be noted that the sound-absorbing board must be sealed and moisture-proof when stored in a non-installation environment.

As the popularization of computer,its form a complete set of products also increase ceaselessly,speaker is one of the most common products,in our daily use process,if computer speaker did not have sound,how should do? Next,let's learn and understand it well! Method 1: because of hardware problem,computer speaker did not have sound likelihood,this kind of circumstance takes speaker to repair only,or change directly,still may be sound box line had not been inserted or did not open switch,want to connect all connecting line only correctly,open switch and volume can. Method 2: check sound card,connecting line,as well as the equipment such as sound box is connected normally.If it is a virus,you should run anti-virus software for comprehensive anti-virus. Method 3: let's see if the speaker is muted.At present,high-end multimedia sound box of a few is to take mute function,exist commonly on remote control,when mute function is opened,the indicator light of sound box is gules commonly or flash hint,prompt user before sound box is mute.This is also very easy to be ignored,causing the sound box is silent. Method 4: we want to see the working condition of sound box.At present,some sound box product is to support multi-way audio input,through switching switch will achieve the purpose of playback.The speaker is silent,probably because there is no signal input in the current mode;And the signal input channel is not the current speaker mode. Method 5: if the "device manager" ---- "sound, video and game controller" is no sound card hardware,it had to find your sound card,including integrated sound card,model must be accurate,after confirming to find the sound card,and then put into the system driver disk,install the sound card driver program. Method 6: as a result of setting improper,likely cause sound box not to make a sound.First, let's see if the main volume adjustment has been muted in the system Settings:If the standard speaker in the lower right corner of Windows is disabled,that's a good indication that the speaker is muted and therefore silent. Method 7: appear when installing sound card driver program "can not find AC chip" prompt,may be computer poisoning,or is sound card plug and play loose, bring about bad contact,still may be because of illegal operation deleted sound card driver program by mistake,or is internal software conflict.

In the speaker, there is a very humble part, say it is humble, because it can not be found on the surface of the speaker, the average person in addition to want to understand the speaker, almost no attention to it. And the speaker doesn't work without it. It's a frequency divider. When playing music, due to the ability and the structure of the speaker unit itself restrictions, only a speaker to cover all frequencies, and if the signal without the full frequency distribution directly into high, medium and low unit, the unit outside the range of frequency response of that part of the "signal" excess will harmful to signal reduction in normal band, It may even damage the high and medium tone units. For this reason, designers have to divide the audio spectrum into segments and use different speakers for each segment. This is the origin and function of frequency divider. Frequency divider is the "brain" in sound box, it is very important to the quality of sound quality. The music signal output by the power amplifier must be processed by the filter component in the frequency divider, so that the signal of specific frequency of each unit passes through. In order to effectively modify the different characteristics of the speaker unit, optimize the combination, make each unit give full play to its own potential, and make the frequency response of each frequency band smooth and sound and image phase accurate, it is necessary to design the frequency divider of the speaker box scientifically, reasonably and strictly. Ability makes high, medium, bass play the musical hierarchy that comes out clear, in time, anacreontic, comfortable, broad, natural sound quality effect. From the working principle, the frequency divider is a filter network composed of capacitor and inductor coil. A high pitch channel only lets high frequency signals through and blocks low frequency signals; Bass channels, on the other hand, allow only bass to pass through and block high frequency signals. The mezzanine channel is a bandpass filter, which blocks both the high and low frequency components, except for the frequencies between the two frequency divisions, one low and one high.