Before deciding to install a car audio, it is best to understand some related common sense, which is definitely beneficial to you.
Purchase articles
It is very difficult for drivers and friends to buy a high-quality car stereo. At present, the profits of the car audio market are tempting, and many technicians in roadside shops have not received professional installation training. The installed car audio often has various failures, which poses a great hidden danger to driving safety. So, how to choose the car audio with confidence and install it scientifically and maintain it effectively? Recently, the reporter visited some car audio shops and industry insiders. They reminded everyone to start from three chapters, you will easily have a set of car audio.
In the face of the dazzling variety of stereos on the market, it is easy to get overwhelmed. There are actually some basic rules for how to buy stereos.
1. It depends on your own taste and economic ability
Be clear about the specific cost of this item of your own expenditure, because a good speaker naturally has a good price. There are generally more professional high-end audios in high-end luxury cars, among which European and American products are better, and the sound quality and timbre are more professional than Japanese products. However, some well-known car audio brands in Japan have also launched some fever brands to compete with Europe and the United States. Although the performance is good, the price is indeed amazing. It is definitely real material. Its index can reach the value listed on the brand and can be used continuously for a long time. If you choose mid-range audio equipment, it is none other than Japanese products. Its brand accounts for 2/3 of professional car audio equipment. The price-performance ratio is good value for money, and in terms of the completeness of functions and the appearance, decoration and fine craftsmanship of the appearance, it is impossible for European and American products to compete with it.
2. To recognize whether it is a real brand
Nowadays, there are a lot of merchants operating car audio equipment in the market. In order to avoid buying back a set of counterfeit and shoddy products, it is best to see whether the merchant has a designated agent license authorized by the manufacturer of that brand of audio equipment, whether it has after-sales service capabilities and quality Three packs of promised measures. No matter how good the product is, there is no guarantee that there will be no problems in operation. In order to solve the problems of maintenance and troubleshooting of car audio, it is necessary to pay attention to whether the selected audio brand has a professionally certified after-sales service repair station in the local area when purchasing audio. Only a sound brand with perfect after-sales service can ensure that the car's sound is professionally and conveniently maintained in the event of a malfunction.
3. To consider the power amplifier capacity of the host
Try to use the power amplifier to indicate the power of the speaker. Due to the small power amplifier, when the high-power output is used for a long time, it is easy to burn out, and it will also cause malfunctions such as poor sound quality and distortion. For example: the sum of the indicated power of all speakers is 100 watts, then the power of the power amplifier must be between 100-150 watts to have a good match.
4. To understand the performance of the speaker
The performance difference between the middle and high-end host will not be too big, the difference between the speakers will be amazing. A horn can be marked with a power of several hundred watts, which makes many insiders confused. For many speakers, you only need to use the 1/10 of the power marked for a few minutes to try, then it may be white smoke.
5. To listen to the sound quality and timbre effect
When auditioning, it is best to find a few representative songs, music, percussion and other discs, to identify the innocence of various sound effects, and then determine whether to buy.
6. Keep the product invoice and maintenance certificate
In order to avoid unnecessary disputes and at the same time protect your own rights and interests, please pay attention to keep the product invoice and maintenance certificate.
Installation
4 points to remember
Pay attention to the correct installation of car audio, car audio is not like home audio, no longer move after putting it. The road conditions of the car are ever-changing, and the strong vibration during driving will cause the fuselage to shake, which prevents the laser head from scanning normally, jumps or even damages the laser head. Therefore, it is very important to choose which audio shop to install scientifically. Industry insiders suggest that car audio is best purchased and installed in the same store, so that problems are relatively easy to solve.
1. Choose a large-scale professional store
Try to choose a large-scale car audio professional store. Generally, there are many powerful car audio store brands. Well-known car audio brand companies generally choose powerful and large-scale stores as their designated sales points. Here, the sound display specifications are orderly, you can choose your own.
2. Must have audition equipment
If you have basically selected a car audio store, it is necessary to check whether there are professional audition equipment or audition cars at this time. This is very important, because before installing a car audio, you can only listen to it through a professional audition device In order to determine the quality of the selected sound quality.
3. Be sure to perform professional tuning
There is a saying in the industry: car audio is not bought, but designed and installed. Visible, the importance of design, installation and commissioning in the process of audio installation. The same host, several speakers, several wires, and different installation workers will have very different effects. In order to improve the listening environment of car owners, the professional shop will carry out scientific installation design on the vehicle. After installation, it will be tuned with professional test equipment to make the effects of all audio equipment to the best state.
4. The installer must have a qualification certificate
The installers of the internationally renowned car audio "Sony" and others must pass the examination and obtain the "Car Audio Installation and Construction Qualification Certificate" in order to take up the job. Unqualified installation and construction personnel can not only make the equipment play its due effect, but even destroy the relevant equipment of the original car.
Maintenance articles
5 major measures must not be forgotten
After your car audio is purchased and installed, you can enjoy pleasant music in your car! When you are in a traffic jam, high-quality CD surround sound, a series of notes rhythm out, the impatience will soon disappear. However, the dirt and dust in the city are the biggest enemies of the audio in your car, so you should pay attention to cleaning and maintaining the car audio frequently.
1. Frequently wipe with a damp cotton swab
The pressure roller of the cassette player and the magnetic head of the CD player in the stereo are all places where dust can easily accumulate. The most important part of the CD player is the laser head, because the laser head is a fragile part and relatively expensive, so it should be focused on maintenance. Although some car stereos have considered dustproof issues during the design process, protective measures are also necessary. You can often wipe the cassettes, cassettes, CD trays, and audio system panels with a small wet cotton swab. The correct way is to gently absorb the dust with a damp cloth. As for the cleaning of buttons and knobs, cotton swabs can be used again.
2. Use the cleaning tool to clean the tape and CD
In addition to keeping the host of the audio system clean, tapes and CDs should also be kept clean. Dirt on the tape and disc will not only affect the sound quality of the playback, but even damage the sound. When the magnetic head of the CD player runs at high speed, if it encounters dust, the magnetic head will deviate from the original laser track, causing distortion of the sound and causing damage to the magnetic head. It is understood that tools for cleaning tapes and CDs are available in most audio-visual stores.
3. Always check the tightness of the tape
The speaker cannot be ignored. Its grid cover is very easy to accumulate dust, which will reduce the volume of the speaker. Before listening to music, it is best to check the tightness of the tape. If you loosen it, you need to use a pen to tighten it; when you are tight, you need to rewind it to relax it. If the tape is not used for a long time or shut down, it is best to eject the tape. Long time may cause the pressure roller to deform.
4. Slow release and less change
Winter is a period of high incidence of damage to the car audio laser head, because the climate is dry, it is easy to generate static electricity. It is best not to touch it directly with your hands when placing the disc, do not take it in the middle, put it in slowly, try not to change the disc as often as possible, and try to be light when plugging the disc.
5. Do not suddenly put the volume to maximum
During the use of the speaker, it is necessary to avoid suddenly setting the volume to the maximum, so that the speaker coil will burn, which will affect the amplifier, and the sudden increase in amplitude will also burn the amplifier.
When you have a comprehensive understanding of the above audio from purchase, installation to maintenance, do you feel a lot more confident? Of course, in the specific implementation process, specific problems need to be analyzed. Only in this way, can you truly have a satisfactory audio equipment, so that the boring driving journey becomes romantic and colorful.
Five minefields must be vigilant
Audio modification has gradually become an extremely important part of car modification. Visited several car decoration stores in Beijing, no matter how big or small they were, they could provide audio modification services. In order to make it cheaper or save trouble, many people just looked for a store to "change it and make it." It's not "nice". Where is the problem, you may wish to listen to professional reminders:
1. Installed inferior equipment
Now there are many fake brand-name audio equipment on the market, and there are many domestic-made miscellaneous brand audio equipment, which neither passed the technical appraisal nor met the national quality standards. The technical indicators of such equipment are very low, the quality is very poor, some machines have noise when they are turned on, and there is background noise when playing music. This is the poor signal-to-noise ratio, which is caused by poor quality circuits, and there are hidden safety hazards. .
Some car owners install a set of audio at a lower price. It seems that there are many equipments installed, but they are basically fake products. This kind of equipment generally has no technical indicators, some have no place of origin and manufacturers, and some pretend to be brand-name products of the United States and Japan. The sound system using these product combinations must have noise and distortion of the music signal. Moreover, the poor frequency response of these products must have defects when playing music, and it is impossible to fully express the music, especially if the active subwoofer is installed, which makes the overall musical sense confused and even ambiguous. The sound quality of a good sound should be high, medium and low, and the level is very clear, like a clear water.
How to identify the inferiority of audio equipment? 1. See if the packaging has detailed instructions, place of origin, manufacturer, specifications, etc .; 2. Whether there is a distribution authorization; 3. The key is whether the sound quality meets the specifications of the equipment; 4. How the combined system sounds.
2. The equipment installed is a low-end product
Although it is a brand-name product, each brand has low, medium and high-end equipment. Generally, low-end equipment is very cheap. For example: a low-end single-disc CD player and two pairs of low-end speakers have a price of more than 1,000 yuan. It seems that all brand-name products are easy to accept, but this is often a place where some businesses are easy to take advantage of. Customers only see brand-name products, do not know that they are low-end products, and do not know the mismatch between the equipment, especially low-end speakers that do not even have tweeters. They are generally used to support low-power tape drives. Smaller, higher sensitivity, and distortion when the volume is slightly turned up. It is difficult to show the good sound quality of the CD player. The main reason is that the high range is worse, the sound is hoarse, the bass and bass control is poor, and sometimes " "Gun", the sound is "flapping, fluttering". Therefore, consumers must comprehensively examine the various indicators of audio when purchasing.
3. Mismatch between installed equipment
If it is not a brand-name device, it will definitely produce good results. A customer installed equipment is a brand-name device. Twelve speakers are installed, including three basses and three power amplifiers. The volume is not high, and there is noise, and the design and size calculation of the subwoofer also has errors. The most important thing is that the equipment is unreasonable, the equipment is not used properly, and the installation and debugging techniques are poor. It is for these reasons that the overall system has failed to function. After re-matching and installation, although the original equipment is basically used, the sound effect is completely new.
A good sound system configuration is not only a simple match, but more important is to give full play to the role of each equipment and tap the potential of the equipment. Others think that it is better to use the same brand of equipment. By the way, what is "fever"? Either use the best equipment or "fever", should use some good quality equipment, but the price is not necessarily very expensive, through reasonable collocation, professional installation, careful debugging, to make the equipment play the best effect, exceeding the equipment Its own value can even be compared with the effect of famous brand equipment, which is the "fever".
4. Poor installation technology and process
Car audio is a semi-finished product, which needs to be installed by professionally trained car audio to ensure the sound quality. Some shops use untrained personnel, and the general installation is simply to connect the equipment, the sound field positioning is wrong, the phase is wrong, the installation of the power amplifier does not install insurance, and a fire will occur. The installation speed is fast, not according to the standard process, the wire used is poor, the workmanship is rough, the consequence is poor sound quality, high failure rate, and short service life of the equipment. The consequence of coveting cheap is to cut corners during installation.
5. Poor debugging technology
Generally speaking, people who are engaged in the car audio industry have a low level of education and have less theoretical knowledge of car audio. Installing car audio is generally considered to be a simple matter. In fact, otherwise, to install a good sound system, he must have a comprehensive The qualities and theories of the company are equipped with automotive circuits, electrical engineering principles, acoustic principles, installation technology and music theory knowledge. As the saying goes: "The insider listens to the doorway, the layman listens to the lively", some people think that the sound is loud and the bass is good. The real good sound should be not distorted when the volume is large, and the sound is transparent and the sense of hierarchy is good. Scattered. Some installers do not even understand the instructions for using the equipment, they will not use the equipment, and have not heard the sound of real instruments such as symphony, how to correct the timbre? How can I hear the problem? How to make the sound system produce good results, this requires the debugger to be an audio enthusiast, and the sound system will be adjusted to the best state when tuning. So commissioning is the last important part of installing the sound system.
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