all speaker
other blog
Tags
2 way crossover 6x9 Speakers AC Reactor active loudspeaker Car Amplifier Car Audio car coaxial speaker car component speaker car horn car mid range car speaker component car subwoofer car tweeter car woofer ceiling speaker grills clamp ferrule concrete nails drive speaker garden speaker high power speaker horn line array horn loudspeaker horn speaker line array box line array speaker loudspeaker box marine speaker marine speakers mini loudspeaker outdoorspeaker powered speaker power pro audio pro audio pro audio speakers professional loudspeaker pro speaker Sanitary pipe fittings stainless steel elbow subwoofer box super tweeter Transformers Electric Transformers Electrical Transformer Suppliers wall mount speaker woofer speaker
Tag Archives: woofer speaker
Removable storage type of car audio will soon swept the market
Web Design And Seo For www.china-webdesign.com
car amplifier – China Manufacturer
Thank you for inquiry my car amplifier, Tel: +86.573.8468.1673, E-mail: futuresound@mailzj.cn
http://www.chinafuturesound.com/
Cassette tape drives, CDs once ruled the audio industry for decades, but with the era of digital music and USB storage, MP3 as the representative of a new generation music carrier quickly swept the world, listen to MP3 has penetrated into our lives when we walk with MP3 player, work and study using a computer to play MP3.
Aicheyizu of Our open his beloved baby car for a ride, if through the USB interface to hear the MP3 that the more wonderful. Therefore, the car Unfortunately, car audio and video equipment can not play the downloaded music and video on U disk or removable hard drive.
Used to be called car MP3, the product has built-in FM transmitter, the integration of the two functions of the FM transmitter and MP3 player, simply press the FM transmitter, MP3 music signal can be transmitted out by the The vehicle\\ s radio receiver, and then play through the car stereo. Sound equipment, the advantage is no longer need the disc and operation of the mechanical part of a little smoke detectors and radios, any car can be used without installing, relatively cheap, good shock resistance, and also facilitate the choice of music content, but rate of the general number of bits MP3 sound quality has been lagging behind the CD a lot, and then through the FM transmitter, some slight noise in the radio part of the sound output, compared to the FM radio reception is better, disturbed not so obvious. but the sound quality and more a part of the distortion played through the car speakers, the effect is far from satisfactory. This is the type of MP3 car FM transmitter has not been popular because of the market.
Now, the real car MP3, with the display, some of them can play MP4.
On sound
Web Design And Seo For www.china-webdesign.com
mini loudspeaker – China Manufacturer
Thank you for inquiry my mini loudspeaker, Tel: +86.573.8468.1673, E-mail: futuresound@mailzj.cn
http://www.chinafuturesound.com/key-mini-loudspeaker-15/
The task of the latter class voltage preamp output audio power amplifier to enough to promote the speaker. It should be noted that as a modern stage, where the output power, distortion, frequency response, signal to noise ratio, damping coefficient, the conversion speed and a number of dynamic capabilities. Total output power, of course, no distortion at maximum continuous power (RMS) standard to measure the most appropriate. Generally will measure 8-ohm load at 1 kHz, this approach can be regarded as a practical and conservative parameters. Distortion related to the transient intermodulation distortion and harmonic distortion. This damping, such as pre-like stress, it was decided to amplifier control unit capacity of an indicator; slew rate and the role of the former class. Dynamic range is the level at rated power and clipping (severe distortion) the distance between the power ratio. A lot of power design institute in the past regardless of the superior power amplifier, the number will be listed in the instructions on the dynamic range of 2 to 3dB. This dynamic more than the lower rated power output after the class, the maximum practical value. After the amplifier circuit design, there are several, such as OTL, OCL and BTL. Enlarge the application of the components was divided into tubes (bile), transistor (atomic particles) Hybrid (gall mixed with stone) and integrated circuits. Work there are A, B, and Class A and B, to name a few. Can you list some commonly used tube model can be interchangeable? Tube origin throughout the world, from China, former Soviet Union, Eastern Europe and the United States. Its function for the voltage amplifier, power amplifier and wideband voltage amplification. Tube swap table 1.12AX7 6N2, 5751, ECC83, the 4004 2.12AVFA, 6N10, 6 189, ECC82, 4003 3.6DJ8 6922,6 N11, E88CC, ECC84, ECC88 types 4.6CA7, 6550,69279, KT88 is KT100 , EL34 5. Bbq5, 7189A ,68-14, EL84, CV2975 6.6CGF, 6N6 7.300B, 4300B audio system how to obtain a lively sound effects? Audio system to replay the lively musical instruments and human voice, power amplifier with speaker wire and speaker can be considered as a whole. The speaker is the only voice of the entire system link. Among woofer diaphragm, compared to the treble quality is most important, it is inert, the forward is not easy to instantaneous speed static, and then move in the opposite direction. Solution separated from use of a high damping factor (or match) In addition to improved speaker overall design of the amplifier to be instigated. To calculate the amplifier damping must own output impedance value divided by the impedance of the speaker (8 ohms). For example, the amplifier impedance of 0.05 ohms, which represents a damping factor of 160; 4 ohm speakers only 80. In fact, the impedance of the amplifier and speakers to follow the frequency of movements and change, this is not the speaker cable\\ s resistance value and therefore lower damping. Suppose the speaker wire has 0.7 ohms resistance value, coupled with the amplifier of 0.05 ohm to 0.75 of the number, only multiplied when divided by the speaker 8 ohm, about 11 of the damping coefficient. Lower when the speaker is 4 ohms to 5 on the practical application of the amplifier manual listed a far cry from the value. Some concept of the speaker unit inertia (high Q), the internal resistance of the amplifier and speaker wire must, in order to achieve a better unit control, and vice versa cone light, quick reaction, or even the whole speaker design are tend to the low Q value, then the appropriate damping coefficient is lower than 20 tube amp. It is true that some speakers with the damping coefficient as low as 25 tube amp, issued only a wonderful voice. As for the damping factor should be considered the best there is no official answer, in many cases subjective hi accounted for a large proportion. But in general, lively voice of the sound system can be close to real people hear vigorously. Could you explain the correct arguments and practices of the friction machine? Mount the machine to be based on the theory to practice, subject to different means and different equipment. (A) CD machine: generally inexpensive CD player to make more use of the less accurate operational amplifier IC, and this part is just the sound of the impact. Hence, the need for them for high-speed, low noise and broadband operation and put the IC. Bandwidth to achieve 3MHZ or more, which is based on digital signals flowing through the D / A converter, the audio signal will produce a large number of ultra-high-frequency noise, and the duties of the low-pass filter is to filter out these ultra-high frequency noise. If the frequency is not enough width is not linear, the audio range (20KHZ below) will respond to these nonlinear UHF brought modulation distortion, the sound stiff. Specifications is allowed, due to increase quiescent current work status close to the CPI, more sweet and pleasant sound. Similarly, the permission of the component pressure to increase the voltage to improve the performance of low-voltage power supply. Split part of the independent power supply to the analog circuits, and take multiple windings, respectively, for the various parts of supply, and thus can the interference between the subtrahend / analog circuits, but also be able to enhance the voltage. If the power transformer is installed on the printed circuit board, you need to dismantle it, the installation is to stay away from the chassis on the floor of the D / A converter. Power electrolyte capacitor values ??will be increased, and the parallel low-value metal polypropylene capacitors, so that the sound energy charge lag, high-frequency open analog circuit power to pay back the connected capacitors and output cross-connected capacitors for high-quality varieties. Line permitting, should immediately repeal the output cross-connect capacitance for direct cross-linked. The sound will be cleaner and lower coloration. (B) before the class: same replacement fever operational amplifier to improve the power supply system. The latter is to raise the voltage, enhanced dynamic will increase the capacity of the filter capacitor and toroidal transformers, the grade should also be high, and the shunt regulator or DC servo-regulator power supply, in addition, to pay back even the capacitor, cross-linked capacitors and resistors can also choose supplements, can improve the signal to noise ratio. Analytical and restructuring of the sound field. (C) after the class: work based on high current and high voltage power supply is particularly important. Switch to large toroidal transformers and filter capacitors in parallel a small capacitor at both ends of the latter, in parallel with a small capacitor at both ends of the latter, for the low-frequency energy and control, that is, even the high-frequency analysis of force there is a substantial help. Cheaper power amplifier, the output of the final stage quiescent current is generally low, so under the conditions allowed in the radiator to increase the current work status from B to A and B class. Transistors can be replaced more dedicated audio power varieties, but pay attention to the pressure and matching and other parameters. Overall, improvement of the line\\ s advantages are many, can also improve the effect of change component specifications better, but keep in mind the different species of op amps, and components, has its own tone, so the friction machine, in addition to pay attention to outside the established norms of the equipment itself, to allow a certain degree of \"friction\", but also carefully and gradually listen to compared to the extensive use of the components of the same brand is not necessary for the principle. Finally, moving equipment \"major surgery\" costly in which the value and worth hide from person to person, should be modest.
Very city car audio conversion representative debut in Guangzhou
Web Design And Seo For www.china-webdesign.com
stage box – China Manufacturer
Thank you for inquiry my stage box, Tel: +86.573.8468.1673, E-mail: futuresound@mailzj.cn
http://www.chinafuturesound.com/key-xlr-stage-box-27/
8th International Automobile modification services industry exhibition was held in Guangzhou, China Import and Export Fair Pazhou Exhibition Center. A number of automotive after market modification services companies attended the exhibition, a display area of ??220,000 square meters. Leading global provider of audio and infotainment Corporation Harman International Continental Automotive, general agent of the installed audio products – the very city also participated in the exhibition.
Representative of five carefully selected from the very city car audio conversion in the spacious 234 square meters of exhibition venue FT087 booth on the ground, showing in front of an audience of exhibitors, five show cars fan-shaped distribution, gorgeous rear boot of the car facing the audience , show superb trunk craft. Which an enthusiast modified car from JBL high-end series of speakers and amplifier configuration is particularly striking, attracted a large crowd watching.
The car modified car equipped with a JBL latest product MS series, and its digital signal processing capabilities on the scale of the smallest hearing extremely precise control of all the input mix. Another new GTO series, in addition to the front sound field selected JBL high-end Power Series Set audio – P660C, the unique 2Ω voice coil design after the sound field – the JBL GTO608C, 12 "die-casting mono ring subwoofer-the JBL GTO1214 and 1500-watt single-woofer power amplifier – the JBL GTO14001; carefully designed to ensure low distortion, the optimal power input to the various types of impedance for the enthusiasts to experience the audition. the GTO series with quality performance American style, clean and powerful sound performance of any style are very excellent, dynamic, strong sense of the intensity of music suitable for the interpretation of a variety of rhythm by enthusiasts blitz.
Bass-JBL GTO1214
In order to better reflect the music of this section car shock effect, modified after the box is installed 2 12 "die-casting mono ring Subwoofer JBL GTO1214 12" die-casting mono ring subwoofer designed to make you feel like being The front row of the concert. The only leader in the field of surround sound JBL can provide such a deep, deep, tight bass.
GTO Series power amplifier
1500-watt single-woofer power amplifier – JBL GTO14001 carefully designed to ensure that the case of low-distortion optimal power input to the various types of impedance. It is equipped with a variable 12dB per octave electronic crossover, allowing you to optimize subwoofer tuning based on location and accompanying loudspeaker components.
The car s front and rear sound field using a 600 Watt 4-Channel full-range power amplifier – the JBL the GTO1004 to promote, you can ensure low distortion, the optimal power input into the various types of impedance.
Follow the passion of fiery style, this wonderful car, pole dancing, hot body models continue to be staged in the dancing posture modification of fine off-road Jeep, and attract a lot of attention focusing and flash, "HOLD" live audience , regardless of all ages can not help but stop and watch, many people approached the consultation with the car audio products, and very urban brand of sales personnel exchanges and functional characteristics.
The very city from the national invitation to more than 100 very city franchisee customers to participate, with the visit to witness this huge car modification services industry exhibition. The exhibition is to increase brand awareness in the automotive market, more deeply, while promoting the brand, and promote the growth of the performance of modified car audio culture and charm.
Decoration home listening room the attention
Web Design And Seo For www.china-webdesign.com
woofer speaker – China Manufacturer
Thank you for inquiry my woofer speaker, Tel: +86.573.8468.1673, E-mail: futuresound@mailzj.cn
http://www.chinafuturesound.com/key-woofer-speaker-25/
1, door and window treatment
Doors and windows of the purpose of sound insulation, sound absorption and dust.
A lot of noise into the interior doors, windows. Good wooden doors, shutting to indoor noise level lower (10-20) db. If the number of door frames covered with sealing tape around the total can reduce the noise level (14-18) db.
Outdoor sound is noisy, it is recommended to install double glazed windows. The general living room windowsill width of about (12-15) cm, the sill edge to install a layer of glazing to prevent dust, noise, thermal effect. Double glazed windows can reduce outdoor noise (14-18) db; if we covered with sealing tape, can be reduced (18-20) dB. If conditions permit, the installation of aluminum windows, made the push-pull, space-saving, easy to use, easy to distort, good sealing, and its performance is superior to steel window.
If the families have to install air conditioners, air conditioning ducts into the sub-outlet, is also the noise of the entrance; If you have installed the TV room
Antenna, the antenna into the side noise entrance. Should these pipes is extremely interfaces to deal with silencer.
Curtains, curtain and tapestry of sound absorption material, exquisite luxury accessories. Velvet and velveteen curtain, curtain materials, can reduce the resonance of the acoustic wave reflection and glass windows. Velveteen curtains absorption coefficient of 0.31-0.47, in the long fiber curtains absorption coefficient of 0.15-0.27, while the double-layer velvet curtain made of sound absorption coefficient, up to 0.69-0.82.
2 on each side of the indoor handle
Respond to ground to sound insulation and acoustic treatment. The best carpeting, its sound absorption, sound insulation effect is more ideal. Typically, ordinary Chinese fiber carpet is about 0.5-0.71, real wool carpet sound absorption coefficient of about 0.68-0.82. The erection of wooden floor, but to paste the strips of wood can also be limited to conditions. Wooden floor of the absorption coefficient of about 0.03 – 0.05. Sometimes people are willing to paste Shop plastic bricks or tiles, their sound absorption and sound insulation performance is poor, plastic flooring sound absorption coefficient of 0.02 = – 0.04, terrazzo scenes sound absorption coefficient of about 0.01 – 0.03.
The ceiling is also an important way to introduce noise. Those of poor quality, the roof of the floor thin ceiling easy transmission, beautiful and sound insulation, high-impact is very small room.
Also on the four walls of the processing. The common wall is dry plaster brick wall, its absorption coefficient is very small, about 0.02 – 0.04 can be made to the four walls to the wooden walls; made of wooden dado height was (0.8 – 1) m, dado should maintain a certain distance from the wall, not less than 4cm in the formation of cavities between the Wall and to increase low-frequency sound absorption effect. The specific practices of the wooden dado can have many kinds of users can also create their own update to support if the wall changed loaded into wave-like, circular type, patch type, and so on, can be significantly improved stifled within the acoustic conditions.
Usually more than whitewashed wall or fold gray spray, spraying latex paint, color spray or other coating, similar to the absorption effect. But also the conditions in the wall concerned about upholstery, wall covering from the wall (3-5) cm is appropriate. The wall covering can enhance the sound absorption effect, but also beautify the room.
3, indoor furniture, furnishings
(A) A typical data
Many of the home listening room to listen to music, but also to receive guests, to achieve the unity of the audio-visual enjoyment and aesthetics. The common room height are relatively low, only (2.4-2.8) m, in order to take account of the listening effect, should make the width of close to 1.7:1 is better. The general area of ??the listening room is larger than 15 square meters, in order to playback stereo, two speakers spaced approximately 2-2.5 m, which will help expand the stereo image group.
(2) furnishings skills
Indoor furniture placed should seek the easy to use and the room nice. Furnishings furniture, try not to take symmetric to prevent coloration. Do not place the vibration caused by indoor items such as metal painting, thin shell, lightweight exhibit, etc., their vibration will affect the playback effect.
Room placed in the cabinet, bedroom cabinet, sofa, etc., improve the absorption effect is very obvious, particularly to improve the low-frequency effect is particularly obvious. The average room can not install the perforated plate resonator, and therefore do not facilitate the absorption of low frequency. Overcome this drawback can be placed in wardrobe.
Glass window hung a thick curtain, wall hanging tapestries, floors, carpets, bed in bedspread, can improve the acoustic conditions. The curtain of low-frequency transmission performance is better, and glass windows on the low-frequency sound absorption performance is better, they have complementary roles.
(3) reverberation time fine-tuning
Indoor reverberation time should be controlled within a certain range. Long reverberation time, voice trailing echo, through the laying of the carpet, hang decorative curtains and other measures to increase sound absorption, and even indoor decoration dolls, plush toys, flowers, pots, etc., can improve the sound absorption effect. If the indoor reverberation time is too short, sound dry, should increase the reflecting surface can be hung on the glass mirror, hung a large picture of the glass frame to improve the indoor quality.
Still a lot to improve sound quality way. Such as indoor flying a variety of chandeliers, wall paste calligraphy and painting or hanging crafts, not only beautify the environment and also to improve the reflective properties. Shelves, some enthusiasts are placed in the room on a shelf filled with different sizes of books, magazines, or CD, analog record, etc., these items on the acoustic absorption, reflection, mines scattered; on the shelf layer of anti-set size, the width of the book, can produce an irregular surface. For those difficult to deal with a large area of ??reflective wall, try placing the shelves, and can also improve the listening effect. In short, through a variety of adjustment measures, and finally let people hear the speaker issued a pleasant and harmonious sound prevail.
Posted in Uncategorized
Tagged active loudspeaker, line array speaker box, woofer speaker
Comments Off
Car Audio Tips
Web Design And Seo For www.china-webdesign.com
woofer speaker – China Manufacturer
Thank you for inquiry my woofer speaker, Tel: +86.573.8468.1673, E-mail: futuresound@mailzj.cn
http://www.chinafuturesound.com/key-woofer-speaker-25/
Car Audio Tips
The reason can be called a car audio system car audio, the most basic condition is that – there are sound playback capabilities. Car audio system, must contain at least the following points to be eligible as car audio, car audio systems that are any natural.
1 Software and the Media: What you want to listen? Traffic conditions of the program? Then you have to open radio stations, and transferred to the correct channel. Want to watch TV in the car? It is more simple, the LCD screen has long been one of the leading car audio systems, and even if you want to see DVD is the same. Listen to music? Your favorite album put a bar, whether it is CD, MD, cassette, which is just inside the singer s collection of songs, you like Liu Jialiang, I want to hear Hit-Pop, who put the album will come to hear it, buns bread differ from each other.
2 source: Multimedia software can decode the body, that of the source. This terminology may seem difficult to understand, in fact, very simple thing! Broadcast radio tuner called, commonly known as the radio; play called cassette audio cassette seat; The play CD album, called CD-Player, but also for compact discs – easy!
3 pre-signal control: Simply put, the first level is the level in the post, we will generally be called after the amplifier stage, so in between the sound source and amplifier, all the parts for the music signal processing, are known as pre- . For example, the host car audio volume control, is part of belonging to the former class, which controls the signal strength is the degree. Other audio equipment, the more often see some of the top-level control, as well as treble and bass adjustment, left and right balance, before and after volume adjustment, and Loudless loudness control. In addition, there are more complex audio equalizer (EQ), its function and bedside sound often seen with multi-frequency tone adjustment, the screen will display a different pattern of the same functionality. In addition, the digital sound processor (DSP) is now standard on many hosts, simply to say that simulate sports, dance or concert hall the sound features such as space. All in all, all about signal processing or adjustment of the institutions of the former class.
4 power amplification mechanism: the first level control most of the voice signal intensity are only a few volts, enough to drive the monomer (see section 5), so the signal must eat, \"Dali Wan,\" so that the signal strength stronger, so that it can watt (W) to calculate, so the success rate of the output signal to strengthen institutions, called the power amplifier, which is commonly known as the amplifier. In general, the total car audio system output value, which is all the amplifier system and the output power, have been used as a car audio system in the size of the series on the classification.
5 Speaker: mechanical sound waves into electrical energy is called the speaker. Perhaps the reader has to guess the speaker is commonly known as the horn! Right … … only half the story. Can signal into a sound body, in addition to the general common round or oval back and forth to the moving coil speaker monomer, there are other types of speakers! For example, with the sound of metal ribbon type (Ribbon), driven by electrostatic diaphragm planar electrostatic speakers, are also in place in the audio. But in car stereo moving coil speaker is still the mainstream, the impression that in addition to the United States and Taiwan EVIL Infinity-style vehicle with ribbon tweeter, other are common moving-coil monomer.
6 transport sector: a complete car audio system, a combination of wire components is essential, but the wire is often easily overlooked. In fact, wire good or bad, will directly affect the sound quality, because the wire from the material, stranded structure, the diameter of the insulation resistance value with the specifications on the design and so different, will affect the signal or power transmission. In the use of wire, due to the different needs of different equipment design-oriented wire, such as power, ground, start signal, horn, fiber and wire required for a particular system, are due to their different requirements on the design the difference. For example, the sound quality of speaker cable required, the purity of the material must be as high as possible, otherwise too many impurities will affect the sound full play. In addition, between the wire and terminal equipment is also very important contacts a solid or not, the contact area the size of the joint design and material, and ground is good, will have a significant impact on the sound effects.
Among the host is currently commercially available, many already have a source, pre-and post-class, include the audio form the basic structure. Why do I say? You see whether the host has single-disc CD, tape deck or radio? At least one of the different bar! That is, source friends. Look at car audio host, is not the size of the volume can be adjusted, but even the most low-end host has to adjust the treble and bass sound right! That is a first grade. In addition, the host is not there most of the output power it? If the car audio system, the speaker is pushed directly to the host, then the host must be included in a power amplifier, such as the common modified the original host or hosts will have most of the power output. The host did not have a built-in power amplifier with output, commonly known as the host of this dumb machine, only the signal output only. Do not think that the host would be more expensive, in fact, most of the dumb machines are among the most advanced flagship, as it will use the dumb machine will be installed car audio amplifier, so the internal parts of the host material is more advanced, the line structure of the walk more complete, so the price is also the most expensive!
Aspects of the power amplifier, if accompanied by sound adjustment, electronic crossovers, equalization, or other functions of the model parameters, it contains pre-and post-class two parts, that is, multi-purpose amplifier; if only purely for power amplifier the aircraft, that is only part of the after-class. If it is the speaker? Needless to say, after it is pure class. Even includes a passive crossover, only tailored for the speaker components, although it is also a control signal frequency and tone adjustment, but it still belongs to a part of the speaker system. Next time you see any one car audio equipment, you can self-analyze it! Car audio system size is, some people will think that his car filled with car audio really simple, and so it can be called the car stereo? I think if you complete the above conditions, you can specify the issue or you want to hear the sound, it can be called car audio, even if the host with the original equipment is only a few speakers. Conversely, if a there are several sources, many of the large Department of amplifier volume control system was not able to listen? If no speaker can sound it? Even if such a system the size is bigger, more equipment, do not be a car stereo.
Little careless car audio conversion
The size of car audio systems, depending on the individual requirements for sound quality. Whether your car sound system the size of the car, next time when you open the car s sound, as long as you want to listen to the music provided for your listening enjoyment services, is the most perfect car audio system.
But when you select a sound, the best brand to buy a package, it will not only have quality assurance, and product specifications must be very detailed and will guide you how to properly use, will avoid the embarrassment of using the wrong .
Car subwoofer tuning the Heart of the three
Suppose you have a car sound system equipment, electronic crossover, or host, built on a pre-amplifier crossover function (without
these features it is difficult probably a modified subwoofer), then installed a car subwoofer system , is bound to face will have three
mixing steps: subwoofer phase, subwoofer with bass volume a sense of connection and frequency settings.
In these three steps before the start of mixing, we must first set the car in the high-pass subwoofer crossover point. Basically, the
subwoofer can extend down to lower the frequency the better player out, but because of the physical nature of restrictions to the
general car stereo bass speakers installed through insulation, damping treated front door panel, for example, the top frequency more
down to the 60-70Hz, and then will begin to go very low loose, vague, so we caught the high-pass subwoofer crossover point, from
about 65-90Hz can be set in order to be able to filter out the bass better low frequency speaker loose.
1 subwoofer phase setting: as long as the subwoofer in the operation phase will have a sound problem, and this set the subwoofer to
be adjusted based issues, if not, it may form a subwoofer sound system and the subwoofer the sound of fighting each other, that is,
the amount of sense to set subwoofer system more, but less bass sounds.
The actual adjustments, as long as you or from the electronic crossover frequency on the amplifier settings to test, as found in the
low-pass subwoofer crossover setting higher, the greater the volume is turned up, but the music sounds more bass less, that is, the
phase setting is incorrect, it is necessary to adjust or phase reverse the subwoofer line the way to correct subwoofer phase!
2 subwoofer crossover settings: in the car stereo, subwoofer low-pass crossover setting involves not only the balance of music
listening, but also involves the accuracy of sound field! You may have heard, some people say that because many car subwoofer
equipment installed in the rear luggage compartment, so the subwoofer can be hit by the car forward over my son.
But think about it, it was a concert to listen to audio speakers on the back of the head of it? This concept is definitely not the right
sound! Therefore, even if the car subwoofer in the rear luggage compartment mounted equipment, we still have a way to get the
subwoofer sounds like the passengers in front, and this was to spend one o clock acoustic theory – the higher the sound frequency,
the stronger orientation ; lower the frequency, sounds more spread, the more directional.
Therefore, in general, when we put the subwoofer low pass crossover set at between 55-75Hz, the frequency is so low is not prone
to the problem of direction, that is, to the human ear, not easy to hear bass surplus came from behind his head, and then with the
sound field in front with the car a good subwoofer frequency interface, you will hear are like the front of the subwoofer came with
the correct positioning of the sound field .
Other readers to know, even in the 55-75Hz frequency in this section to set the subwoofer s low pass crossover, musical sounds, or
have different changes, basically the lower the crossover point set, the sound field more reach, more broad, more flexible bass sounds;
higher crossover, bass impact, intensity of feeling stronger, two features can not have both, depending on who s listening preferences
audio mixer!
3 sense of ultra-low volume settings: adjust the amount of sense to set the subwoofer system is the easiest, but also the most error
-prone steps! Many people might like to re-taste, the volume of the subwoofer system to increase the bass was very large, not
knowing the state increased dramatically in the bass, the low over the audio band is probably a distortion, and how could such a nice
music? Therefore, the correct sense of ultra-low-volume adjustment, in fact, as long as the subwoofer sounds a little bit of feeling
enough, or should the main bass bass from car speakers.
BOSE powerful sound system evaluation Porsche Panamera
Have to admire the United States BOSE sound in acoustic technology and skill on the adjustment, with the Cadillac SLS3.0L shortly
before the 15 single audio and video systems, car audio converted to engage industry experts to send it a “convinced” ; This time
with the Porsche Panamera has 16 single sound system, let the experts sending it a “high” comment. However, unlike the Porsche
Panamera SLS3.0L BOSE system is so exhaustive, but especially courtesy of the boss, which is in the back seat listening to music, you
will have more surprises than the front. And SLS3.0L the same, BOSE and the number of monomers in the Panamera body set up to
16 sound system, play to make the “conquest of large-scale systems,” the game, and through the digital tuner, single design,
installation and configuration methods , so that before and after the 3-frequency sound field speakers, center speaker, a pair of
surround speakers, and hidden in the car boot of the subwoofer within the monomer, the release of good harmony sound. In
addition, thanks to digital audio control, thanks to the system in addition to providing traditional treble, bass, volume balance around 6
to adjust the positive and negative outside, but also to “linear” function to change the sound characteristics to achieve mentioned on
the functional annotation : “Recommended for fans of severe” effect; or in digital simulation, which allows conventional stereo
recording of the CD can sound clearer focus and sense of space.
Such a parade of huge systems, naturally not miss to provide USB, 3.5MM headphone jack style external signal terminal, so that use
can be provided by the host in the car 6 disc CD, MP3, DVD playback function other than to expand more listening pleasure. But
interestingly, Panamera 7-inch screen can play navigation map, reversing monitor can display is no way to play DVD video, do not know
the function of this seal is not the means to go through a special decoder to start? As for the sound performance, the back seat
listening to the Ho brother is full of praise for the “high” word, but the driver s seat in the upper level, I think, what factors have the
sense to listen to our different? Then I painted pure and clear, Mr. Li Zhihao verbal exchanges sense of hearing.
Pan permanent: the more advanced vehicles, and most of the consumers we have the same expectations related to the higher
quality requirements of equipment, the first Porsche rare three-way acoustic design, the installation of the low tone and external
trunk amplifier, stereo configuration count Hao Hua Chenrong.
Ming Tu pure: Yes, the first performance of the sound field of the sound field is very good, the sound field of sufficient height, width,
and a good audio-visual form, using a linear function of the host, so that the listener feel natural and comfortable.
Li Zhihao: linear model is a good design, will set a good equalizer for adjusting the sound as a professional, but it is worth noting that
with the family, the lifting of the linear mode, the performance of low-frequency sound in the amount of flu will become some
increase, but the texture fall, there will be areas in the human voice becomes slightly blurred.
Pan permanent: As an advanced car, Porsche has also selected in the audio famous BOSE cooperation of the United States, the
strange thing is, BOSE Timbre style as Chu s some changes, the two can share with us next?
Coated with pure clear: the United States and more bass-oriented sound, taste heavy, but this car is not such a style-oriented, the
most obvious is the lack of sense of the amount of low frequency.
Li Zhihao: Mr. James was right, listen to the voice of the car, the typical “German sound” design, in pursuit of a sound balance, fine to
feel, especially when listening to sound in the rear to achieve the best, is Original Sound of the few “good sound.”
Ming Tu pure: boss car, ha ha, the back of the sound to determine the experience even better than the front sound field more
depth, unfortunately many in the back of the control function, the independence of the lack of rear seat audio controls.
Pan permanent: to do so much comment period, the feeling is the easiest of all to listen to the sound sense of understatement in the
two old friends in the senior, one by one to get the answer, finally, I have asked the two to our audio enthusiasts Some of these cars
to the next modification suggestions, thank you!
Li Zhihao: Porsche s audio has indeed given a decent performance with the family, in pursuit of better sound quality to the
performance, I suggest the first step should be to improve the subwoofer, car, dress in a larger subwoofer , so that low-frequency
performance of the more vigorous, especially when watching video powerful subwoofer, will bring more U.S. audio-visual experience.
Pan permanent: Yes, ah, this is the three of us together have to feel deeply modified the project, improved speakers sound
recommendations on Mr. James s view it?
Ming Tu pure: Porsche s voice in the original configuration be terrific, in listening to some voices in the software, available on the host
linear listening mode, making the timbre minor increasingly professional style, but the music pursuit was thicker taste some, or
expectations of a higher density of voice users, it is recommended to use higher-quality speakers to replace the original car, after all,
with the original car, but was modified when the attention of the original car system is designed, to retain 5.1 audio decoding side
effects.
modified car stereo is to buy or buy audio equipment
Now when people want to buy a car stereo in the face of foreign brands, all businesses are different versions, some of the commercial
marketing hype, and some so-called experts misleading. So that the car audio consumers confused, I do not know how to choose only
from the appearance of store size and product number, and price to determine the purchase and installation. Or install some cheap
junk, or cheated counterfeit goods, and even spent a lot of money but no good results. Some people is not no money to install
sound, it is some non-professional installation, resulting in better sound, deceived, I am not blind installation, this is why?
It comes to modified car stereo, some people will be talking about what to buy brand immediately, or compare prices, or process
modification is to see how cool, spend less money to buy more equipment that value. Focus only on the surface of process
equipment, while ignoring the objective is to buy a sound full of beautiful melodies manifested with the music. Not strange to change
your car is good, equipment is only a means, and use it to listen to music is the goal. Can say that technology is more important than
before.
In many foreign professional car audio shop, the majority of small area, usually only one installation of parking spaces, these stores
reflect the professional skills, from the equipment with the installation process, sound debug, done very well, because it is “SOP” . So
that there would be prominent in the sound performance. Now many people in no such sense of sound to be converted to a
specialty store, but the car point and 4S shop or buy a large-scale comprehensive field installation, the installation of the effect can be
imagined. No value feelings, just a simple installation.
Now have a bad phenomenon, the so-called professional business someone to mimic the installation of a 10 tens of thousands of
audition room, audio-visual to the customer, these configurations are generally added electronic delay and reverb system, the effect of
playing a true and different types of vehicles in the car difficult to achieve the same effect, and thereby mislead customers. Purpose is
to sell the equipment. The real lyrics should be, simple and practical to achieve in the car audio system, audio-visual operations for
customers, there must be realistic.
Some merchants suggest that you modify the door, leather bag, the shape, etc., charge many fees, in order to earn more profits.
One can imagine that would have limited financial resources, in addition to audio equipment, spent a lot of capital on the remaining
funds to make the audio system can do better? Suggest that the limited funds due or to enhance the sound quality, sound is used to
listen, not to look at, how much time you open the trunk to enjoy? Loading cargo space will be small, slick. Unless you go to shows
and competitions.
HIFI activities music art audio technology and combined in the human body when a state, it is a personal choice by their electro-
acoustic equipment, perfect for music, the realm of beauty and pleasure activities. Therefore, HIFI both to the technology, but also
to art. Electro-acoustic music art technology and the two wings of HIFI activities, lack of the same would not be called HIFI, said that
the discussions will leave HIFI theme music appreciation, and said that the discussions will deviate from the HIFI audio technology
theme, are absurd, is not understand what is the performance of HIFI activities.
Some businesses, in the wire to make a fuss, wire and equipment to be used in conjunction itself is not very good equipment, the use
of advanced wire, is a waste, is a means to sell the business as you. Wire as long as the level of equipment worthy of the indicators
can be, which is the place to examine the business professional, will calculate the diameter and wiring knowledge, can not mess up. Or
is buying the line.
Poor installation techniques, and debugging is a common phenomenon in this industry, although the use of good equipment, good
sound quality to the sound system is not accurate sound field positioning, and even the phase is wrong. Installation process is not
refined, so many owners want to install a good sound, does not mistakenly believe that a good car audio, spend more money does
not work. Is to make high-end car audio industry, a factor in poor sales. Even more exasperating is that many so-called audio
installation shop, buy some low-quality bass, coupled with low-level single-disc CD, with two pairs of low-cost speakers, a total of one
thousand yuan. One can imagine such a system, how can you claim that sound? Is simply noise.
Car audio installation is a comprehensive technical and artistic, Why? The first car to be proficient in the circuit. Vehicle structure
(disassembly audio and interior). Car audio circuits. Equipment with. Electric acoustics. Tuning techniques, mixing their own music staff
training. Every aspect of sound system will determine and influence the final results.
Personal opinion, the acoustic conditions greatly influenced the sound of audio equipment, but often is one of the most easily
overlooked things. More than 90% of the car is the lack of reasonable acoustic conditions. Acoustic conditions of this stuff requires a
certain expertise, coupled with the installation and commissioning to be the appropriate steps, unlike the replacement, for lines like
direct, convenient, therefore, a considerable part of the fans is I do not know this problem, some do not know where start, there is
trouble or even the intention to evade the issue. This sound system is very easy to sound problems arising in blame for all the
equipment body, most of the way altogether replacement, for horn, and back to PA, in addition to bankruptcy, you are no
fundamental skill of the progress of fever , very easy to become a slave device. Frequent replacement and those who can not
upgrade a friend is worried, four for help, facing their own set of “weak” is simply a love-hate relationship!
There is a customer say, I have been to many shops, has changed three of the speaker, the effect is not good. The problem lies in
the business do not have good communication with customers, not understanding what the customer wants to achieve the effect,
no professional music training and acoustic theory, can not complete the proper installation and commissioning sound system, can only
sell equipment and simple modified it, so can not meet customer needs.
Many modifications to the sound with the owners of conversation, he often complained about the system the whole band arrived
loose in the high-frequency dry and hard, too, or a vague position, and so on. In fact, the problem occurs to a large extent is caused
by the irrational acoustic conditions. If your equipment is used by a carefully designed products, distortion, frequency response,
excellent signal to noise ratio and other physical indicators, then, is completely unnecessary rush replacement, because it this is a
“normal” equipment. Its progression may be lower, but not a “bad” equipment. If the equipment is no problem matching and
installation, through reasonable matching, frequency response and sound field debugging, you can have a good performance.
Music is an art of spiritual activities should be feeling; HIFI fever is a theory of technical activities, there must be logical. Music by HIFI
fever reached the height of the realm, is a feeling and logic integration activities, people can make such integration is a relatively
perfect wisdom and who is an emotional and rational levels have reached a certain level of people, the unity of art and technology.
From this point of view, the light stick HIFI technology, the equipment inside get out, even the infinite HIFI equipment upgrades as a
means of showing off wealth, and only know how to listen to the train cars roar and the sound of broken glass were not real HIFI
enthusiast, he did not combine the technical and artistic ability. Even people who recognize that talented, in love is not. While some
with a good equipment, but only mold for doors, shape, and sound quality is a degree of collapse paste, only loud, can not be used
music. Spend the money simply is innocent dead. Have a customer say: it took 10 tens of thousands of installed sound because they
can not hear every day looking awkward, sold the car angrily. This is also detrimental to the reputation of car audio industry.
HI-FI fever is aimed at live artistic, completed the process is a big Shaoyou, which the emphasis is on the process rather than the
absolute value of the equipment, or it is not big but big burn of Shao.
In short, audio equipment and technology and art is to be the perfect combination of equipment and technology to music through
the cultivation of professional people, integrate them rationally, like a complete picture of the beautiful, like a full stage, reflected in
your front, which is a real pleasure, in order to achieve value for money.
to the host or amplifier input level GAIN LEVEL debug tutorial to teach you how to tune a good sound system
CarCAV modified car stereo school:
“Input level” This is a modified car stereo in a very sensitive jargon, but a large part of car audio conversion technicians are
collectively referred to as “gain” or “volume.” In fact, the latter two is entirely wrong, in fact, “input level” refers to the host state of
the maximum undistorted output level, transfer to the power amplifier, power amplifier output level corresponding to host matches,
and then amplified output to the speaker. “Input level” is just a transfer from the source to the amplifier stage or auxiliary devices of
the matching process, then why in the amplifier GAIN or LEVEL rotary knob in the size of the speaker sound will change? Level
because it is matching the size of the voltage change in the size of it, it s the size of the sound output level in the match after the
host will not increase after the matched power amplifier distortion level is amplified if so, would have hurt the speaker unit We said
after the match level amplified voltage amplifier clipping. Clipping of a sound system is fatal, not only will make the system noisy, but
also make sound bad, heavy speakers will be destroyed, so a little affected by the input level range is very wide, then how to adjust
the input level?
First you need two things: 1, oscilloscope; 2, signal test disc (with a 1KHz 0dB,-5dB, +5 dB signal such as discs, the discs used in this
chapter is to post to the signal blessing 3Sixty2 disc), then the following the steps.
The test consists of CarCAV technical director Hao child and Guangzhou lion and dragon, CarCAV technical director Yuan Huaqiang
together to complete! Test equipment such as CD players and amplifiers brother fat boy from Guangzhou to provide outstanding
pioneer DEX-P99RS and Alpine CDE-9872E!
Tutorial before the start of the oscilloscope is the first to explain what, according to the name can also think of their role in it, is to
test and watch the signal waveform of an instrument, a place where we can see with your eyes is not a distortion of the signal
equipment.
If the test disc is the source for the oscilloscope prepared by the host broadcast of the corresponding signal oscilloscope for testing
and viewing the image, in fact, we often use the signal is 1KHz 0dB, then the child should also mention that for the ho-5dB and +
5dB? The-5dB is used in the bombing machine, in the American habits, in order to achieve greater sound pressure and adjustment, of
course, use this signal to debug, then there will be distorted, but the bombing is certainly a distortion if the signal , just to grasp the
degree,-5dB is a good degree; +5 dB is generally used in Europe, the game s more, Europeans not Americans demand more bass so I
use this signal, but the Europeans +5 dB for our Chinese people, a little less, in fact dynamic enough, so we use 0dB signal, of course,
we can match according to different needs and commissioning of the input level.
directional stereo cable you
1 audio cable with the direction, the direction of the arrow is always used,
mainly related to the line inside the electron arrangement
more orderly nature of the signal transmission is getting better,
upside down on the chaos to re- arrangement ,
But also to normal after a period of time
(2) If it is independent of the signal line shield wire, and grounded at one end,
other end is not grounded, it would be more
directional friends