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Why car audio to be converted
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Remember the person in charge of the National top ten car audio conversion shop \"car modification industry leading companies in the very city car audio chain,\" replied:
1, the car\\ s original car audio is poor,
Manufacturers of automobile production, the pros and cons of car audio configuration is not the most concern, do not attach importance to professional production and development, reduce costs, not taking into account the sound quality to match the good or bad, purchase cheap speakers, ordinary material, low power, around 15W. analytical sensitivity is not enough, distortion and high, but there are sound only, sound and when there will be buzzing noise, not to mention the sound to enjoy, layering, restore, and fidelity do not have, although now luxury cars of the original supporting the improvement of the factory stereo, but from the sound of a professional, is still very different far; whether this difference between the fact that testimony, the original car sound effects and a truly wonderful sound, as long as the store field contrast to know to understand the inner depth to understand music.
2, driving pleasure, you need a wonderful sound, the necessary modifications.
If you want to enjoy the driving pleasure to stretch the song to enjoy the beautiful melodies, and indulge in the mobile music accompanied by beautiful singing, if you love and like the music, a little knowledge in music appreciation , it is necessary to the relative degree of modification on the car stereo, the fever of more than million to enjoy, ranging from a few thousand dollars supporting enough, at any time to open the car stereo and enjoy the soundtrack and realistic sound full thickness of the sounds of nature the sound with you.
3, urban traffic congestion, traffic congestion, relief of boredom pastime
Long wait will be dull and boring, depressed and uneasy, bored, how to pass the time of suffering and need moving to sweet music to regulate nerve and sensory discomfort.
4, for a long time to drive long-distance drive, recover from fatigue partner
Once upon a time in a state of tension, excessive concentration of attention, easy fatigue, loneliness and fatigue, daily drivers are aware of the need music to fill the empty hours, but the original car audio sound sound quality is poor, layering is unclear, the details vague, chaotic sound distortion and noisy sounding songs need to put high-quality speaker, the more necessary to match the power amplifier to drive high-quality speaker job, so sound and acting freely, clear and bright, and restore realistic, naturally comfortable.
Enhance the life of the product are ignorant and level
Enjoy the taste and fashion, to improve the quality of life; car is not just a transportation tool, decorate your car, upgrade audio conversion, barrier remarkable zest for life products ignorant of the infinite charm of the music, make life more content more flavor; hobby music is everyone\\ s fun, to understand the deeper, with more different, to be to improve the quality, taste, and the realm of passion accompanied.
6, relieve stress, relax the nerves, a healthy lifestyle
Music is not just a form of entertainment, a lot of ingredients affect human psychology and emotions also affect human physiology, such as depression, neurasthenia, fatigue, high blood pressure, irritability, sadness, not confident, several media reports music prescription can cure diseases.
As the saying goes: Jiejiuxiaochou worry more melancholy songs of one, make bereavement; Modern life is stressful, fast-paced, pressure, difficult living conditions and work problems, cope with unemployment laid-off, bankruptcy, loss of mental depression, there is a complicated business, depressed and so the vicissitudes of life, to be extracted to relax, need to cultivate character, need to adjust the rest, tired, tired, listen to good music, busy, and make your car gifts plus supporting and upgrading of the sound has always with your life regulator, always enjoy and appreciate the wonderful music, joyful laugh, and resolve the worries of life, love your own, improve quality, adjust the living environment and atmosphere, its music \"infinity.
Thermoplastic matrix composite materials
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The thermoplastic matrix composite materials developed in the 1980s, mainly in long fiber reinforced pellets (LFP), continuous fiber reinforced prepreg tape (MITT) and glass mat reinforced thermoplastic composites (GMT). According to different application requirements, the resin matrix of PP, PE, PA, PBT, PEI, the PC, PES, PEEK, the PI and PAI and other engineering thermoplastics, fiber types, including glass fiber, carbon fiber, aramid fiber, boron fiber may fiber varieties. As the thermoplastic resin matrix composite technology continues to mature and the advantages of recyclable composite material of the varieties developed rapidly in the developed countries in Europe and the United States thermoplastic matrix composite materials have been accounted for more than 30% of the total resin matrix composites.
High-performance thermoplastic resin matrix composites, injection parts, the majority of the matrix PP, PA. Products are pipe fittings (elbow, tee, flange), valves, impellers, bearings, electrical and automotive parts, extrusion pipe, molded GMT products (such as jeep seat bracket), automotive pedals, seat, etc.. The glass fiber reinforced polypropylene in the car, including ventilation and heating systems, air filter housings, gearbox cover, seat frame, fender pads, drive belts protection cover and other.
Talc filled PP has a high rigidity, high strength, excellent heat aging properties and resistance to cold. Talc reinforced PP in the interior decoration of important applications, such as a ventilation system components, instrument panel and automatic brake control bar, for example, the U.S. the HPM company with 20% talc filled PP honeycomb structure made of sound-absorbing ceilings and car window regulator lifter volumes rope drum shell.
Mica composite material with high rigidity, high heat distortion temperature, low shrinkage, low deflection, dimensional stability and low-density, low-price characteristics, the use of mica / polypropylene composite materials can be made to the car dashboard, headlight protection circle, block plate cover, door rails, electrical fans, shutters and other components, the use of the material damping of the production of audio parts, use the shielding can be made battery box, etc..
Of thermoplastic resin-based composite materials began in the late 1980s, over the past decade has made the rapid development of the 2000 annual production reached 120,000 tons, accounting for 17% of the total output of resin matrix composites, with the matrix material still the PP, PA-based, enhanced materials, glass fiber-based, a small amount of carbon fiber, not a major breakthrough in thermoplastic composites, there are still gaps with the developed countries.
The difference between coaxial speakers and speaker package
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Coaxial speakers are several pronunciation unit layout as one of the speakers, for example, the tweeter is mounted inside the midrange unit; suit speakers and coaxial speakers are the opposite, its pronunciation unit is a separate arrangement, usually with a divider to the input audio signal is separated into different parts of the treble, alto, bass, and then were sent to the corresponding high Woofers replay this divider passive sub- frequency, which is generally unable to meet the players level, but as an ordinary application is sufficient.
Coaxial horn tweeter is located above the speaker, Affordable, compared with the market for initial upgrade car audio friends. Because it drives easy, but because of the treble and bass mix interfere with each other, the sound speaker package as pure. Another sharp sound, the sound field positioning is not perfect, but also its shortcomings, the effect of its music can not keep up with the speaker package as natural. Although some million car stereo also uses coaxial speakers, but in general, split higher grade than coaxial speakers
The speaker package is widely used in car audio, home audio, but is not common. Car audio and home audio are two different things, home audio corresponding to a standard space the effect of the speaker * Montreal play. Car, there are many parts, including the frequency of the dashboard, seats, horn has some obstacles. The car audio industry for this study, the production of a separate speaker package. In general, listen to the speaker package is better than coaxial speakers, and audio level are higher, and hope that in the configuration of a high-end audio enthusiasts, most of the selected speaker package.
Car Audio Speaker amplifier integrated non-destructive upgrade
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Many car owners looking forward to have a high quality car audio, can be a lot of people do not want the converted audio and any changes to the car interior, so caught in the dilemma. However, a new speaker-24/">car audio speakers and amplifier into one that will help riders solve this problem. The so-called speaker amplifier integration of sound set of speakers built-in amplifier and HOD sense of hearing technology in a new product, simply each speaker audio characteristics of the vehicle environment, specifically supporting a human ear, car ideal to listen to the sense of the effect of output characteristics of the product. The characteristics of this product under the premise of ensuring the sound quality upgrade, the original car stereo without damage upgrade. Damage upgrade in the modified car audio, automotive sheet metal structures and the car interior without any damage and changes, upgraded sound system on the original car electronic devices functionality and electricity system does not cause any interference and conflicts to to ensure traffic safety, In addition, an upgraded audio system, power must be adapted to the energy reserves of the original car, to avoid the vehicle power supply system to work overload, leading to shortened life expectancy of the battery or generator. There may be riders have doubts about the sound of this new type of audio equipment, to this end Mahone to find an Accord car equipped with the audio device to personally experience. The first is to install in the car did not see any traces of the changes to the interior, line, etc. audition the sound, the sound clear and sweet, clean sound and thorough, no difference in feelings with the family HiFi sound. However, the reporter seems, there are two things wrong, such as the bass, feel the impact and shocking less than a reporter\\ s request, in addition to its subwoofer is installed in the trunk of the vehicle, due to the larger, so more space However, fish and can not have both, the most expensive of the sound is not a few thousand dollars, its unique features and a higher price, is definitely worth some of the riders to consider.
Knowledge and purchase of my home stereo audio and video cables
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pro speaker – China Manufacturer
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The AV cable is short for home stereo audio cable (Audio Cable), and video lines (Vidio Cable). Audio cable video cable, can effectively eliminate external electromagnetic interference, and the original Khan flavor to transmit signals, we say this is a high quality line. A classification of home audio and main functions: home stereo is usually divided into pure audio and home theater audio two categories. Pure sound, also known as HI-FI audio, by the pure power amplifier (only two-channel output), speaker and disc players, generally used to listen to music and songs. Home theater sound, also known as the AV component systems, two-channel playback of music and songs, can also play a six-channel home theater disc. \"Fans\" in the general play of pure sound, but mainly to listen to Western classical music. 2, the relationship between fiber-optic lines, coaxial and decoder and amplifier: the disc player itself can be \"reading\" and \"decoding\", but in order to reduce costs, its decoding functions are generally primary. In order to enhance the \"decoding\" series, so that the sound becomes more beautiful, between the invention of the independent decoder and amplifier with a decoding function, and thus have a connection disc players and decoders, CD and decoding amplifier a \"bridge\" – fiber-optic lines and coax them to disc players \"read\" the digital audio signal transmission to the independent decoder or amplifier with a decoding function decode an audio signal. This transmission is often used in high-end audio. 3, audio cable, video cable, coaxial cable can not mix: appearance, video cable, audio cable and coaxial line of the body and two terminals constitute, and are relying on the inside of the metal wire core transmission signal. Therefore, it was for the sake of expediency, or less demanding arbitrary three mix. This can also lead to communication number, but the sound and picture quality is certainly damaged. Silver Leaf Wang AV cable used in the production of the three characteristics and uses of different structures and materials to ensure a true to the music and images, two functions the same AV cable is good or bad should have conditions: ① both prices and grades must be near; (2) must be used with a stereo, with a piece of music, the same volume, same listening environment; ③ The use audio and yindie of high-grade, too low to itself, will be issued by the noise so difficult to compare. How to give a reasonable sound optional AV cable? AV cable in the audio transmission signal from the \"bridge\" role. According to the AV cable for audio grade matching the same grade, so in order to make the audio sound effects to get better play. In general, high-end audio portfolio, the AV line of the investment ratio of 20% is more reasonable. Generally sound, we can not use too much low-end AV cable, which will not only attenuate the signal and the transmission signal is vulnerable to external electromagnetic interference, and ultimately lead to sound distortion. That are willing to spend money on sound rather than willing to spend money to buy the practice of the AV cable, in fact, with the Mercedes car to the petrol station and 90 # gasoline is no different on the surface, saving money, but eventually lead to bad results. Should be noted that the AV cable in use: the different functions of the line can not be free to mix, for example, use coaxial audio cable replacement, etc.; 2: AV cable when in use so as not to bend, and preferably away from power;: AV cable enough premise should be as short as possible, the extra length will only increase the signal loss; 4: The size of the speaker wire should be selected depending on the size of the sound power. Too small, the signal transmission by stagnation, the speaker unable to pay a good voice; too large, the signal loss increases, the increased burden of the power amplifier, speakers also unable to pay a good voice. 5: AV cable with external connection must be tightened. Poor contact (such as collapse, etc.) that will cause audio noise is severe will cause the components to burn out. : The AV line after a certain number of years, the core has metal terminals and wires may appear oxidation (\"aging\"), which would affect the sound effects, and should be replaced according to the actual situation. Silver Leaf Wang AV cable with 24K gold-plated terminals, effectively put an end to alleviate the \"aging\" of the generation.
Speaker headphone entry talk headset speaker
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marine speaker – China Manufacturer
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In the previous section, we took great lengths to explain the technical characteristics of speakers with electric speakers [the pros and cons], on the sound principles of the speaker, headphones electric speaker and the speaker does not have any difference, but Because the use is not the same, so the technical requirements are not the same, this talk on a headset with speakers.
Headset speaker also called the drive, electric speaker sound principle, also called habitual moving coil speaker. Its design must meet the small-diameter, lightweight needs. Otherwise can not be installed to the ear shell.
Requires both light can not harm the performance of Nd-Fe-B has become the preferred material of the magnet, it has a very high flux density up to ferrite 7-14 times, a normal headset NdFeB magnets, you can easily adsorption from the objects of weight a few times.
Most of the headphones is not divided by design, it is actually a full-band speakers are responsible for a very wide frequency response, this is not an easy thing. To achieve the full band sound of a single diaphragm, the diaphragm needs to be done very light thin and there is a certain intensity, speakers with diaphragm almost failed. Moving coil speaker diaphragm, the thin PVC material specific formula manufacturers confidentiality], the thickness of the thinnest can reach a few microns, in order to enhance the diaphragm strength, the diaphragm is generally suppressed to strengthen lines, which can improve the high frequency response, and the split vibration to produce a certain deterrent effect.
The structure of the cone speakers, fold ring and centering piece is used as a suspension system, dome speaker diaphragm repression fold ring suspension, moving coil loudspeaker suspension system, but with the diaphragm have been integrated, this dome speakers are very similar, basically, can be dynamic speakers as a derivative form of the dome speakers.
The voice coil is also key, because it must be very thin diaphragm, voice coil weight will impact on the working status of the diaphragm, copper voice coil weight heavier, more CCAW Voice Coil CCAW Voice so-called Copper- CladAluminumWire, Chinese as aluminum, copper-clad wire, it effectively reduces the weight of the voice coil. This voice coil of the speaker using the speaker application, but the scope of application is relatively small point.
Headset design, there is a speaker, after all, common, that is, moving iron speakers, it\\ s very small, so much for which the design of the ear headphones. Speakers using the speaker in a similar type, called the electromagnetic speaker, or call the speaker of the reed. Moving iron speakers can be regarded as a derivative of the electromagnetic speakers simplify varieties.
Moving iron speaker power, drive a U-shaped iron plates, conduction to the shell sound, its sound principles and dynamic speakers. This type of speaker of the biggest advantages is the high sensitivity in the early period for hearing aid design, widely used in-ear headphone design in recent years things. Moving iron speakers also have a greater disadvantage of the performance of the frequency response is not enough, the sound of the metal taste is too strong, However, as technology advances, these shortcomings have better improvement.
In order to overcome some shortcomings of the moving iron speakers, and some high-end models and custom headphones, multi-speaker plus the divider to achieve a more perfect frequency response, such as Ultimate Ears the UE 7 Pro, with two woofer, a tweeter, which are located in two separate cavities. The earplugs interior design divider, high-frequency, low frequency via the two catheters output, reverb in the ear canal. This is somewhat similar frequency of the speaker and the multisection.
Headphone speakers did not use the special features on the principle, in front of the introduction of large format on the speaker, also applies to the headphone speakers will not repeat it here, but special headset applications, will lead to the design of the headphone speakers by volume, weight , etc., constraints, design space is small. Headset design for a class of flat-panel electrostatic loudspeaker applications, but few in number, not as a basic knowledge of science, interested can read the relevant technical information.
the selection of professional speakers and notice
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speaker Notes – alert – tips article: The main speaker was briefed on the selection and use of professional attention to matters of knowledge. The following order by the purchase shopping network, available to you for reference.
Selection of professional speakers and notice
Speakers to use
1. Use points
(1) a reasonable place to be two main speakers placed a certain distance to get a better stereo effect. Speaker of the base should be strong, not because of sound burst and shock. Speakers work environment to prevent hot and dry, should be placed in the ventilation. Speaker of the above items can not be placed to prevent the destruction of its resonance and sound quality. Speaker is a strong magnetic field equipment, pay attention away from the TV, watches, tape and other items.
(2) connection to short speaker and amplifier connections should try to make it short and thick, and now there are dedicated domestic anaerobic copper wire to connect speakers, to improve the sound quality does have some help, according to investment selection .
(3) loudness to the appropriate speakers can withstand the power is limited, do not let it work at full capacity, generally greater than the minimum recommended power can be. If the time limit for speakers work in power, its life will be reduced, and in severe cases can damage the speakers.
(4) cleaning and maintenance cleaning speakers use a soft damp cloth without any cleaning agent. Easy to dust off the speaker grille that can be used to clean fine brush.
2. Subwoofer crossover adjustment
Professional sound system with subwoofer to pay the entire system, bass, subwoofer location can not be aware of the listener, or subwoofer will destroy the balance of sound pressure (eg, the subwoofer placed in the left, you will feel a greater voice in front of the left channel). Can make a simple test, turn off the volume of all speakers, the subwoofer is only open; if there is no specific test audio, rich subwoofer to play music clips, in order to concentrate, can close your eyes, listen carefully to the subwoofer speaker s voice, if you can analyze it with hearing location, it means the subwoofer crossover point too high.
If you are using the standard THX speakers, can be directly transferred to 80Hz, which is the THX standard. If other \"sets\" of professional speakers, the problem is not large, set in the vicinity of 80Hz. In the left, middle and right main speakers is very good low frequency extension of the case, then lower the crossover point should be moderate. In any case, crossover, \"better not\" set at 80Hz or more, if the main speakers are \"limited bass,\" the speaker, and crossover frequency must be set above 100Hz, the location of the subwoofer should be moved to front and center, near the center channel speaker.
room acoustic treatment considerations
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TV / home theater / audio notes – alert – tips article: introduces the indoor acoustic treatment of some note. The following order by the purchase shopping network, available to you for reference.
Notes room acoustic treatment
1, placed a good speaker
The right speaker is placed in the room to get a good sound effect playback key. If in accordance with the preceding sections of this chapter on the introduction of speaker placement, spend a few hours, while for the speaker while listen to find the right placement, will not only be able to get a good sound effect playback, but also increase the listening experience and be able to hear sound differences. All the indoor acoustic treatment are placed in series with the appropriate speakers based. Speakers such as the wrong place, the rest all efforts were in vain.
2, the room s length, width and height should have a good proportion of
Although in most cases, the room is already building the good. Length, width and height ratio had a good set. But if given the opportunity to choose rooms for listening room, in order to avoid standing waves as much as possible is best to refer to chapter 3.1 listed in the room length, width, high percentage. Because it is so hi-fi equipment to get a good sound effect playback of a selected precondition.
3, parallel to the surface to avoid bare
Xiu Xiu if the light in the room without any acoustic treatment of the face parallel to the surface, will hear many times back to gas. Just laying in one of the absorbing surface materials, such as sound-absorbing foam, the United States to eliminate many ASC s echo of the sound-absorbing material, a small piece of tapestry or carpet-like sound-absorbing material, in particular, ASC s Tube Trap of the class-specific acoustic equipment, which can absorb more bass, so that the side wall of the diffusion-wave and eliminate multiple echo.
4, absorption or scattering of the side wall and the ground reflection
Have to try to sound at the listening position with the smooth before laying a carpet on the ground with the listening position in the speaker s side wall absorption or scattering of sound waves posted some of the material to avoid close proximity to the speaker have bare walls and windows and the like reflections the surface. U.S. ASC s Tower Trap absorption tube, a variety of sound-absorbing foam and RPG diffusion screen, able to be effectively used to eliminate the side wall reflections. Placed in the side wall side of the shelves can be a good spread of sound waves.
5, so reflective material away from the speaker
Audio rack, power amplifiers, furniture and other objects placed in close proximity to speakers, audio-visual and sound field variation are causes. Therefore, these objects will have to try to move away. Such as moving the speakers back. If you can not move, they should be covered with sound-absorbing material.
6, for a high with a slope between the height of the room
Although not always possible to do so, but if it can choose a higher altitude and slope with some room to make it better and better listening room. This room can be changed not only between the floor and the ceiling of room resonance modes can also reduce early reflections on the listening position, so that a more vigorous bass rounded sense of space is more spacious. Speakers should be placed in the lower end of the ceiling.
7, treble and bass to balance the absorption of
Most of the room will tend to absorb too much treble, while the bass absorption is not enough. Required carpets, curtains and soft furnishings and the like with some supporting the use of the material to absorb the bass, so that the reverberation time in the band can remain unchanged. Too heavy and slow bass is not balanced by the reverberation caused.
8, moving the listening position, so to achieve the best balance of bass
Standing in the room have some constant pressure and whispered loudly pressure area. You can try moving the listening position, in order to achieve the best balance. To avoid sitting near the back wall of words, because there would be too bass heavy.
9, with irregular flat or bizarre objects to disrupt the graphics in chaos
Specifically to put some furniture or objects will help disrupt the formation of standing waves indoors. Placed at the listening position behind some large pieces of furniture will make the listener back to those back wall reflection spread.
car audio characteristics of the host audio signal output
In the car audio field, now the most used way is to output the analog signal output, such as built-in amplifier to directly drive a small
speaker, but also the first low-level signal output to connect to an additional power amplifier. Analog audio preamp output is used in
car audio red and white RCA connection, the connection of other audio / video products are more common, but in car stereo, the
two colors represent the analog audio signal input and output, and almost all of car audio products, and are based on the RCA
connections, including equalizer, power amplifier.
The output analog audio signals, there are four types: single-point grounding type, balanced, floating and differential. This is the
original car audio systems and after-market car audio compatibility is a very important key. Usually a type of audio output can not be
compatible with another, even though they may choose the same RCA connectors. Many after-market car audio and video host of
audio signal output is very simple, it is a single-point grounding type. High output of the host that drive speaker directly, its output is
the use of floating. But the original car the host are generally in a balanced output or differential output, which is after-market audio
products have a greater difference.
Some High-end level of the host or CD disc CD box with digital audio signal output, the DVD host, digital audio output but also a
standard. The digital audio output must be D / A digital-analog conversion, the digital signal into an analog signal, then output to the
amplifier. Now, there are several little-analog converter to power amplifier to receive digital signals. Hosts the DVD, the digital audio
signal output decoder will also require the use of multi-channel signals into separate channels.
The output of digital audio signal output method is commonly used fiber optic signal output, it uses POF (plastic optical fiber cable),
and analog signal output by the use of copper signal lines are completely different. Optical digital audio signal is converted to a signal
light pulse signal, it is not all finished inside the electromagnetic interference. Fiber connections of copper wire and other differences in
the way, to ensure signal purity, optical fiber signal can not bend over so as not to have an impact, especially in fiber length and fiber
optic cable production methods, are required to take into account optical signal transmission. Of course, the use of fiber optic audio
signal processor also requires it, and then the optical signal into an analog signal. This input is very common in the civilian market, but
relatively rare in car audio. Fiber-optic signal connector commonly used to connect both ends of the head with a standard TosLink fiber
cable POF, this connector is designed by Toshiba Toshiba and named.
Digital audio signal output connection is also used in coaxial signal output, similar to its Connector RCA connector, the difference is
between them is the use of one-way coaxial system, the digital audio signal transmission to the D / A converter, in order to match
between the equipment, the use of RCA coaxial connectors, the standard should be 75 ohm coaxial cable shield, and only one wire,
braided shielded cable is out.
Technical points of the host audio output
Audio audio output to the host they connect with the equipment to match its technical points are worth our attention, they are
related to the performance of the entire sound system. Main points are:
1, the signal to noise ratio S / N Ratio
This parameter is the source of the sound system for the entire system to produce heavy burst of new noise ratio, and its noise are
thermal noise, communication noise, mechanical noise, and so on. The indicators for the general detection of rated output power of
the playback signal with no signal input system noise output power ratio of the number of decibels (dB) to represent. The higher the
better the audio signal to noise ratio, the higher signal to noise ratio of equipment that it produces less noise. Such as CD players up
to 90dB signal to noise ratio above, high-end even reach l10dB more.
2, pre-output level
Pre-output level is a very important parameter, because it will affect the audio chain, the lower product-related parameters. It is given
in volts. Output from the host level or at least the processor in the power amplifier input sensitivity adjusted to the lowest, nor will
they produce overload distortion, sound system will not produce the slightest sound. When the sound system is used to hear voices
or music, the host of the amplifier output level and input level of the best ratio is 2:1, that is, if your host s maximum output is 4V,
then you The maximum power amplifier input level best to 2V. In any case adjustment, the best match is the power amplifier without
distortion, maximum power output. Despite the higher output level of the host, it seems that the more power amplifier can drive, but
in reality, we must consider the level products matching the input sensitivity. For example, the amplifier s maximum input level is 2V,
then the output level is not appropriate host 8V.
3, the output impedance
This parameter is considered connected to the host with the lower equipment matching issues. Output impedance is the ohm units.
The actual output impedance varies with frequency, so the nominal output impedance is actually based on a specific frequency
measurement results. In general, the pre-output impedance ranges: 50 Euro to 1000 Euro. Generally considered to have low output
impedance of the host is excellent, but in fact, this also represents a large current output. The advantage of high current or power
amplifier connects multiple processors. When connecting a single power amplifier, then the size of the output impedance is essentially
no difference, but when connecting multiple amplifiers, and a Y-shaped sub-line, then a low impedance high current output level
before the host is the best choice . In practice, make a sound pressure in the car, preferably in such a low impedance of the host.
How to choose the right knowledge of car audio speakers
Host, and speaker amplifier car audio system, the most important part. Host is like the human brain, what kind of sound to be issued,
may be controlled by the brain. The speaker is like the human voice, the sound is sweet, it is necessary to see how the voice. It is the
role of speaker audio signals into acoustic signals radiated to the surrounding air medium. Car speakers conical design of the most
common, which is installed in the vehicle because space is limited in the case, tapered design can be expanded as much as possible
the effective area of the diaphragm, and diaphragm determines the effective area of the low-frequency response speaker .
Accordance with zoning, the speaker can be divided into full-frequency, low frequency, medium frequency and high frequency of four
kinds. Form of energy conversion can also be divided into electrical, electromagnetic, piezoelectric, electrostatic and tablet, electric
vehicle to the main speaker. That is coaxial speakers full-range speakers, it s woofer and tweeter is designed in the same center line,
the outside is low, the inside is high, but the vocal point in the same physical location. This design can eliminate the high and low
frequency units due to the frequency range of different sounds caused by drift, but because of the high, the bass is emitted from a
point, so the larger the distortion sound. Divided into 2-way loudspeaker frequency and divide by 3, 2 divided by the tweeter and
woofer components, divide by 3 is coupled with the midrange unit. Because each unit is responsible for different frequencies, broaden
the frequency range, so as to solve the problem of sound distortion. However, because daily life, we hear the sound basically sent
from one point, while the frequency emitted by the speaker frequency of each unit, the installation of the physical location are
different. In this way, there will be voices drift phenomenon. In addition, the high, although the bass unit is responsible for different
frequencies, but it is bound to the existence of a critical point, so in a different position, given the same frequency, will produce
acoustic interference. To solve these difficulties, we must use the role of divider. Crossover As the name suggests, is to separate the
different frequencies, and sent to a different speaker unit. Of course, its function is not only this, it is also based on the characteristics
of the speaker to make proper adjustments in order to reduce distortion and interference.
Host, and speaker amplifier car audio system, the most important part. Host is like the human brain, what kind of sound to be issued,
may be controlled by the brain. The speaker is like the human voice, the sound is sweet, it is necessary to see how the voice. It is the
role of speaker audio signals into acoustic signals radiated to the surrounding air medium. Car Speakers conical design of the most
common, which is installed in the vehicle because space is limited in the case, tapered design can be expanded as much as possible
the effective area of the diaphragm, and diaphragm determines the effective area of the low-frequency response speaker . In other
words, tapered design can not install bass case, bass.
Accordance with zoning, the speaker can be divided into full-frequency, low frequency, medium frequency and high frequency of four
kinds. Form of energy conversion can also be divided into electrical, electromagnetic, piezoelectric, electrostatic and tablet, electric
vehicle to the main speaker. That is coaxial speakers full-range speakers, it s woofer and tweeter is designed in the same center line,
the outside is low, the inside is high, but the vocal point in the same physical location. This design can eliminate the high and low
frequency units due to the frequency range of different sounds caused by drift, but because of the high, the bass is emitted from a
point, so the larger the distortion sound. Divided into 2-way loudspeaker frequency and divide by 3, 2 divided by the tweeter and
woofer components, divide by 3 is coupled with the midrange unit. Because each unit is responsible for different frequencies, broaden
the frequency range, so as to solve the problem of sound distortion. However, because daily life, we hear the sound basically sent
from one point, while the frequency emitted by the speaker frequency of each unit, the installation of the physical location are
different. In this way, there will be voices drift phenomenon. In addition, the high, although the bass unit is responsible for different
frequencies, but it is bound to the existence of a critical point, so in a different position, given the same frequency, will produce
acoustic interference. To solve these difficulties, we must use the role of divider. Crossover As the name suggests, is to separate the
different frequencies, and sent to a different speaker unit. Of course, its function is not only this, it is also based on the characteristics
of the speaker to make proper adjustments in order to reduce distortion and interference.
Purchase proposal
1, the characteristics of music according to their preferences, select the speaker: If it is like to listen to the sound quality, choose
sound quality, outstanding speakers, if you like to play a large dynamic music, the appropriate choice of large diameter, heavy bass
speakers.
2, according to its own budget, choose the brand: Speaker brands currently on the market, prices are different, the brand s product
quality is good, but expensive. Specific conditions can be selected according to their own horn.
Glossary
Nominal Impedance: speaker at a particular frequency when measured at the input impedance value, it is the speaker sound system
with other parts of the important parameters match. If the data and power amplifier with a nominal impedance, there will be sound
distortion.
Sensitivity (SPL): When the speaker with 1 W power of the noise signal of 1 m in the axial direction of the sound pressure level
measured, which is reflected in the size of the speaker sound performance skills. When the optional speaker, to try to make both sides
of the consistent values (controlled within ± 1 dB), or there will be very clear sense of focus.