Some car owners will ask, why change the audio? My understanding is that this problem should be divided into two levels:
The first level is why you should listen to music in the car:
1. Life is tight;
Life is stressful and stressful, business work is overwhelming, complicated tasks, mentally tired, and beautiful music is needed to relax and relax, cultivate sentiment, and adjust self-cultivation.Choosing to listen to good music when you are tired in life is essential in life adjustments, but most people are busy with business and work outside, and they can only rest when they go home, and cannot affect the elderly, children or neighbors, so there are more opportunities to relax and relieve pressure. It’s during the driving, Meile accompanies you all the way, the futurecarAudio-visual modification and upgrading consumption will become a fashion for enjoyment.
2. Urban traffic is often congested, traveling and traveling long-distance driving;
Being in a state of tension for a long time, the only entertainment that can relieve tension is listening to beautiful music. Driving time is long, concentration is too much, it is inevitable to get tired, the feeling of waiting is extremely boring, I hope that music can be used to mobilize the senses to enjoy the fun;
The second level is why we need to change the sound:
1. In modern cities, with the improvement of living standards, people's material life is also improving. The rise of car owners is getting faster and faster. With the ever-increasing number of vehicles, urban roads that were originally fairly spacious have been occupied by colorful cars. Especially during the commuting time, if you want to drive smoothly on the road, it has become the dream of car owners.
In this case, how to easily consume this garbage time in the congested road section, and improving the sound effect is particularly important at this time, so many car owners have chosen to upgrade the original car audio, which is described in a common saying : "The road is blocked, but the music will not be blocked." Some music lovers have even invested heavily to upgrade a set of top-notch speakers so that they can flow smoothly on the road to graceful music.
2. In terms of auto manufacturers,Car stereoFor the whole vehicle, it is not an important part, let alone a safety part. Therefore, the car factory only considers the car audio as the interior, which means that the cost and technology spent are as small as possible. It can only be said that it is the concept of "just sound", and will not give more consideration to the content of sound quality and functions.
In order to reduce the price of the whole car, the production cost must be reduced for the economical car. Now the car price is getting lower and lower, and the proportion of the car audio in the car price is also lower, and the absolute cost of the car audio is required to be lower. The audio only uses a low-power, cheap and low-quality host and speakers, not to mention a bass system. Therefore, it can only be used reluctantly.
Therefore, most of the original car speakers sounded poorly, with unclear layers, blurred and muddy music details, unclear volume when the volume was small, and distortion and noise when the volume was high. Therefore, the basic principle of improving the original car audio is to replace higher-quality speakers, and then need to add power amplifiers to promote, replace the CD host, add woofers, etc., a complete car audio system must have: CD host (head ), speakers, power amplifier (power amplifier), woofer (bass) Etc. Of course, there are also a series of auxiliary equipment: such as carsSoundproofVibration and noise reduction, audio processor,capacitance, Wire and so on. Only after the modification and upgrade of the audio system can the sound quality be freely put back and forth, the sense of layering is clear and clear, the sound is realistically restored, and it sounds natural and comfortable.
Someone will say: "Brother, I think what you are talking about is reasonable, but my car is less than 100,000 yuan, and the space in the car is small. I am also a car audio enthusiast, but I really don't know how to change it."
In fact, many car owners are confused and feel that their car is not very good. On the one hand, they are not interested in changing the car and feel that the car is not good. Eloquent, let me share our modification case with you, and everyone will understand that small displacement can also be produced!
But some car owners have this question: Is it so easy to upgrade a good sound system? In the face of the chaos in the market that cannot be described in words, there are so many refit shops and audio "brands", as well as the complexity of car audio refitting lines, and the problems that have emerged from the opposite sides. Does it sometimes make you hesitate? In fact, it is not difficult to upgrade a good audio system. As long as you can master the following basic knowledge, you can increase your confidence on the way to upgrade the audio system. In one word: I am the master!
Here are some basic issues that car audio modification enthusiasts care about.
Will the audio upgrade affect the wiring in the car?
Some car owners who modify car audio have always wanted to upgrade the original car’s audio, but there is always a kind of unreliable psychology about the safety of the modification, which hinders them from making changes to the car. They always worry that changing the car’s audio circuit will affect it. The other lines on the car caused unnecessary trouble, so the audio modification plan was abandoned.
In fact, the audio upgrade will not affect the original car's circuit at all, because the car's audio is a separate system and has no connection with the original car's driving circuit.
Take any car as an example: even if the car stereo is not changed, it will come out of the factory with a host such as CD, cassette, and radio. High-end cars are even equipped with DVD and GPS audio-visual entertainment systems before they leave the factory, so they all have a dedicated audio tail cable (dedicated power cord).
For example, when replacing the CD host or installing a DVD audio and video system, just replace the tail line behind the host with a special tail line equipped with the new machine. Connect according to the standard wiring method and take corresponding protective measures. The car circuit causes any impact.
What are the car audio hosts?
CD hosts on the market can be divided into two types in terms of functional quality:
One is the built-in host without power amplifier, commonly known as "dumb machine", so that the host signal transmission is stronger and the sound quality is better restored. However, this kind of host must be equipped with an external power amplifier, because it relies on the power amplifier to amplify the signal to work. The market share of this host is also particularly small. Because it is more expensive, ordinary car audio enthusiasts will not choose this kind of host, only enthusiastic car fans will use it.
Another type of host, the host has a built-in power amplifier module, which can directly drive the speakers. Currently, there are single-disc CD and multi-disc CD hosts on the market, but they are basically compatible with MP3, AAC, WMA, etc., and some CD hosts can also be connected to U Disk, AUX input, direct connection to iPod, iPhone, etc.
When choosing a host, first look at its built-in power. If you don’t install a power amplifier later, you should choose a higher power. Usually the nominal power on the host is its peak power. Example: 45W×4, 50W×4, etc. These are all peak powers. At this time, you have to look at the famous book, which has a rated power output (RMS), which is the continuous output power (working power) of the host. The power is about 19W-26W.
Next look at the signal outputTerminal(RCA) There are several groups. Generally, you should choose a host with more RCA output, which will play a great role in upgrading the audio in the future. For example, if a group of RCA output hosts push a four-way power amplifier, then two more one-in-two signal lines must be added, and the signal will be attenuated. In that case, the effect will be greatly reduced! If you choose two sets of RCA output hosts with a four-way power amplifier, then it's just right. The host RCA output has at least 1 group and at most 4 groups. Choosing a host with a high level output is also very important for audio upgrades. Generally, the level output value of an ordinary host is relatively low, between 1.5V and 2V. But for some high-end mainframes, its level value output is between 4V and 6.5V. This is to provide a good convenient condition for installing power amplifiers in the future.
Car audio host (DIN) size classification:
First, let's take a look at the detailed explanation of the DIN standard size:
DIN was originally the audio size specification used in Germany, and it has since been continued, and standard audio devices are implemented in this size.
DIN position refers to the car center console reserved for car electrical appliances such asCar DVDStandard installation space, 1DIN refers to a standard space (width and height are fixed and depth is not limited), 2DIN is twice the space of 1DIN. This location is generally used for the installation of audio host, tuner, and LCD display.
After the equipment is selected, the important part is installation. As the saying goes, "three points of equipment, seven points of installation" is not unreasonable, because the audio must be installed in the car, the car's use environment is bad, the wiring is complicated, and there are many sources of interference. , The position of the speaker is not ideal, the fixing of the door panel, the elimination of resonance, the elimination of noise, the selection of wires and many other problems. Therefore, the installation technology and craftsmanship are very important, which directly affect the sound effect. You must find professional and technical personnel to install it in order to achieve the desired effect.
Subwoofer (subwoofer)
More than 8 inches in car audio are collectively referred to as woofers (not ruled out that some brands have special 6-inch woofers). Over 12 inches is called a subwoofer. If you choose an 8-inch bass, then its lower frequency limit may not be too deep. That is to say, the penetrating power and shocking power are not great (the wave is also short). In this way, you have to choose according to your own vehicle. When installing a subwoofer for a sedan, you must consider the size of the woofer, and choose a relatively large (12-inch or 15-inch) speaker; also consider the car. The tightness. Like a car with relatively good airtightness, a large-sized woofer can be installed to give full play to its penetrating power and transmit the bass to the front. It's different for hatchbacks. The permeability of the hatchback is very strong, and it does not need a woofer of too large a size to give it a lot of penetrating power. For car owners with low bass requirements, 8-inch and 10-inch are also available. In fact, you still have to choose the bass based on your own feelings. After the power amplifier is installed, you can plug in the bass to try it out. Choose which one you feel is more suitable for you. This is also a more rational consumption.
Improving the bass, extending the sound field, adding bass is not only shocking
When most car owners use the original car audio system to listen to music, they always feel that the music is thin and there seems to be something missing. This is the feeling of lack of full and strong bass. Some car owners are blind to installing subwoofers, thinking that the sound is loud and vibrating; some people think that adding subwoofers is for listening to "disco, rock", and listening to other music does not require subwoofers, which are all for subwoofers. misunderstanding.
The car is driving fast,tireThe noise generated by friction with the road surface, engine noise, and wind noise often weaken the bass effect. Installing a proper high-performance subwoofer to enhance the bass area can make the music full and make people listen better.
Change the bass to extend the sound field
The car owner usually only attaches importance to the main unit and mid-to-high tone, up to mid-bass. For example, 6×9 inch speakers, although the frequency response index is relatively wide, but the attenuation of the super bass area is also very serious, so the performance of music in this frequency band is not outstanding. Only by using a special subwoofer to compensate for this frequency band and extend the bass area can the music maintain a natural tonal balance, sound rich in depth, breadth, fullness, and clarity and purity.
The size of the subwoofer is mostly 8 inches, 10 inches, 12 inches, 15 inches, 18 inches and so on. The subwoofer uses a high-strength copper and aluminum frame, and gold-plated terminals improve the overall performance of the speaker. It has good electrical conductivity and can prevent oxidation and corrosion. The special bulletproof and strengthened tympanic membrane is coated with epoxy resin to press the paper cone. Double damping The device is ventilated and lengthened magnetic poles and large strontium alloy magnets.
The choice of subwoofer depends on the preference of listening to music. If you value the sound quality of music, you can choose a sealed subwoofer. Its characteristic is that the sound is easy to control, the sound quality is better, but the efficiency is relatively low. If you like to listen to the "explosion machine", you can choose a cabinet with air holes, which is characterized by large volume, suitable for sound pressure competitions, and high efficiency, but the volume size of the subwoofer is stricter, and the diameter and length of the air duct are also certain. Requirements.
Cheap speakers are not as good as bellows
Don't buy low speakers for cheap, especially buying active low speakers. Many active subwoofers use plastic cylinders to be processed into cabinets, simple circuits are used as power amplifiers, and some use fake and inferior components, which not only have a high failure rate and are prone to fire after overheating. The sound of such low speakers diverges, and the control of the sound cone is not good. High-quality bass should be grain by grain, very full, and contain no midrange components.
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