What do you have to know about car audio upgrades?

Is it so easy to upgrade a good set of sounds? In the face of chaotic remodeling shops in the market, the numerous "famous brands" of audio, as well as the complexity of the car audio conversion route, have made many car owners uncertain. In fact, upgrading a good sound is not a difficult thing. If you can master the following basic knowledge, you will be able to add confidence to the upgrade. In a word: everything is up to me!
Underneath Beijing Cool Car Town FEM car audio station for everyone to explain, the audio converter is more concerned about several problems store: Beijing Cool Car Town FEM audio station Address: No.1, Cool Car Town, Jinxi West Road, Chaoyang District, Beijing D3-11
First, will the audio upgrade affect the car line?
Some car owners always want to upgrade the sound of the original car, but there is always a lack of solidity in the safety of the modification, which hinders their changes to the vehicle. They always worry that changing the line of the car's audio will affect other lines on the car, resulting in Unnecessary trouble, so gave up the program for audio conversion. In fact, the audio upgrade will not affect the original car circuit, because the car's audio is a separate system, and has no connection with the original car circuit.
Take any car: Even if you don't change the car stereo, it will come with a host like CD and cassette. High-end cars will even be equipped with audio-visual entertainment systems such as DVD and GPS, so they all have a dedicated audio cable (dedicated power cord). For example, when replacing a CD with a DVD video system, just replace the tail line on the back of the main unit with a special tail line equipped with a new machine. Connect according to the standard wiring method and do the corresponding protection measures. Cause any impact. In addition, if the modification is slightly larger, such as adding 1 function (power amplifier), the car audio upgrade Xiaobian recommends using a matching special oxygen-free copper power cable, because the power amplifier needs to supply power (this line also with the original car) There is no connection between the circuit, it is a sound system that is modified after being directly supplied from the battery.) However, this power cord must have a wire diameter (the thickness of the wire) that matches the power of the entire system, and then add a gold-plated waterproof insurance to it. It is safer.
If you have a larger system modification, such as: 2 or more power amplifiers, the power is particularly large, then you must consider adding capacitors at this time. It is also conceivable to add accessories for some power supplies such as battery engines. The location where these accessories are placed is also important. They can be given a good-looking shape and they can be well protected or hidden. This is a safety measure for the rear installation line. Even if they are installed, they will not have any effect on the original car line.
Second, how to choose a host?
Nowadays, the market is roughly divided into two types of mainframes: one is a built-in mainframe without a power amplifier, commonly known as a "dumb machine." Such a host signal transmission is strong, and the sound quality is better restored. However, this type of host must be equipped with an amplifier because it relies on the amplifier to amplify the signal to work. However, this type of host has a particularly small market share. Because it is expensive, it is generally not recommended to install such a host. There is another host with built-in power amplification. This type of host is also divided into two types, one is a single-disc CD player or a single-disc CD-compatible MP3 player; the other is a multi-disc machine. Nowadays, the host with MP3 on the market is also popular. In addition to the earthquake resistance is worse than that of the multi-disc machine, other functions basically surpass the multi-disc machine.
The price is also half of the multi-disc machine (subject to the same grade), and it is also relatively simple and convenient to use. When choosing, the first thing to look at is its built-in power. If you do not install a power amplifier later, you should choose a larger power. Usually the nominal power on the host is its peak power. Example: 45W × 4, 50W × 4 and so on. And then you have to look at the instructions. There is a rated power output (RMS), which is the continuous output power (operating power) of the main unit. The power is about 19W-26W; secondly, there are several groups of signal output terminals (RCA). Generally, some hosts with more RCA output are selected, which will play a big role in upgrading the audio in the future. For example, if a host of RCA outputs pushes a four-way power amplifier, then two more signal lines divided into two will be added, and the signal will be attenuated. In that case, the effect will be greatly reduced!
Selecting the host with high level output is also very important for audio upgrade. Generally, the level output value of common host is relatively low, between 1.5V and 2V, but some high-end host's level output is 4V-6.5. Between V, this provides a good convenience for the installation of power amplifiers. For example: a 5V output host pushes a 4V power amplifier, so that the working efficiency of the power amplifier can reach 100%, the signal can be restored very well, and the output signal of the power amplifier is basically not distorted; on the contrary, if a host of each V is pushed one 4V amplifier, then the power amplifier can not play its original work efficiency.
Third, how to upgrade the original car audio?
1. The choice of amplifiers is a vital part of the sound upgrade system. Although most of the mainframes have built-in amplifiers, their power and effects cannot be compared with external amplifiers. The basic function of the amplifier is to amplify the amplified audio signal (current amplification) to drive the speaker. This is just a brief introduction. If you seem to have a higher pursuit of bass, you can consider installing a single-channel amplifier to drive the woofer. Because the power of the single-channel power amplifier is powerful and powerful, and in the production process, there is no need to consider too many additional functional factors, and the bass has a commonality, which can play the bass effect well. But it's expensive. Therefore, many friends who have modified the sound, the first consideration is the two-way power amplifier or four-way power amplifier. Because they are all economical. (But when choosing, you must check to see if it has Qualcomm (HP) and Low Pass (LP) tuning. Brand amps generally have this feature).
This kind of power amplifier can push up, IF speakers, and low-frequency speakers. It can also adjust the power size and the setting of the crossover point. After upgrading the audio, it will not cause repeated consumption, and the amplifier can continue to be used. A single-channel amplifier can only push the woofer, and can't push the high- and mid-range speakers because it has only one output and only low-pass (LP) tuning. Then the sensitivity and anti-interference ability of the amplifier are very strong (because there are too many noise sources in the car). The signal-to-noise ratio consideration is also the focus of choosing an amplifier. Be sure to choose a power amplifier with a high signal to noise ratio. Because some things in the amplifier, such as circuits, resistors and capacitors, all belong to their own patent number), they have great selectivity. The higher the signal-to-noise ratio, the stronger the anti-interference ability. 2. The speaker selection speaker is also a product that causes many misunderstandings. Speakers are roughly classified into coaxial speakers and crossover speakers. In the crossover speaker, it is also divided into 2, 3 and 4 divided. Commonly used on the market is a 2-way speaker. The 2-way speaker consists of three components: the treble, the midrange, and the crossover. The crossover speaker transmission is relatively balanced. The host transmits the signal to the frequency divider. The frequency divider also redistributes the signal to the high frequency and intermediate frequency speakers. This makes the layering better. Even if the listening time is long, it will not cause us to hear. Fatigue, its effect is also very good. Its sounding body is launched in a fan shape, which creates a good condition for the positioning of the sound field. The most important point is that the treble has a strong directivity. Treble is a key part of the sound field positioning of the vehicle, so it is best to choose a set of speakers. The composition of the coaxial speaker is that the treble is in the middle part of the midrange, but this treble part is difficult to separate from the midrange. At this time, the illusion to the listener is that the power is relatively large, but the sounding body is in a column shape, its The emission area is not too large, the sound is relatively turbid, and the layering is not as obvious as the set speaker, so the coaxial speakers are basically equipped with the rear sound field of the car. (The rear sound field of the car audio is used to assist the effect of the front sound field to achieve the best sound field effect of the vehicle, but it is also necessary to set the optimal listening position according to the listener.) In general, the front sound field is set, after The sound field is coaxial, which is a relatively economical match. Of course, the entire sound field is set, so the effect will be better, I believe it will increase the cost.
Another point is that the speaker has its own personality: American rock, German vocals, British classical, etc. The choice of speakers varies from person to person. According to your favorite style and economic situation, don’t blindly follow the trend, resulting in big investment and small Return.
3, the choice of woofer (subwoofer) car audio inside the 8 inch speaker is collectively referred to as the woofer (not to rule out some brands have a special 6-inch woofer). More than 12 inches is called a subwoofer. If you choose an 8-inch bass, its lower frequency limit may not be too deep, which means that the penetration and shock are not very large, so you should choose according to your own vehicle situation. When installing a subwoofer in a sedan, consider the size of the woofer. Choose a relatively large (12-inch or 15-inch) speaker: consider the tightness of the car. Like the Audi A4, A6, A8; Buick Regal, LaCrosse; Bora, B5 and other relatively tightly sealed models, the installation of large-sized woofer, can play its penetrating power well, transfer the bass to the front very well . The hatchback is different. The hatchback is very permeable, so you don't need a woofer that is too large to give him a lot of penetration. For owners who don't have high bass requirements, 8" and 10" are already available. In fact, the bass still depends on your own feelings. After the amplifier is installed, connect the bass to audition. I feel which one is more suitable for you. Which one to choose, this is a more rational consumption.
Fourth, how to choose a good audio modification store car audio is a very systematic project. It's not just a simple combination of mainframe, speaker, male, and accessory, because it's interlocking. First of all, there must be a good equipment configuration, followed by a good placement and installation. There is such a saying in the car audio industry: "Three-point equipment, seven-point installation." The same equipment in different audio conversion shops, the style is not the same, so the choice of car audio conversion shop is also very important. Professional stores consider more details in detail, only the details can reflect perfection. For us, car audio can only enjoy the beauty and enjoyment of music only if it is safe and worry-free. Therefore, professional audio conversion shops will do very well in terms of installation, such as professional threaded casing, gold-plated horn chuck and thermoplastic tube. Choosing the right fuse and power matching wire is an important part. The situation that the car actually ignited after installing the stereo will not appear in professional stores. There are also a lot of unprofessional audio conversion shops, and the price they give to the owners is very cheap, which is easy to cause a big illusion. There is a big difference between car audio and home audio. Home audio is a finished product. After purchase, connect the cable and plug in the power supply to use it normally. But car audio, it is just a semi-finished product, requires professional technician installation and professional testing. Because they are interlocked from configuration, placement, installation and commissioning. Only in this way can we achieve the best results and be worth the money!
Therefore, after you have the budget for car audio conversion, you must shop around. There will be professional car audio configuration personnel who are certified to work in the professional store to give you a detailed explanation. Uncovering the car audio makes people feel mysterious. The veil allows you to transform from a layman to a rational consumer who understands consumption. Professional technology, rational consumption guidance and risk-free modification are gradually becoming the new service concept of professional car audio conversion shop.