With the improvement of living standards, the rise of the car family is getting faster and faster. But the growing number of vehicles, originally acid, spacious urban roads, have become increasingly crowded. Especially during the commute, it is a dream of yesterday to drive on the road. How to spend this prejudice jam in sections, the modified sound comes, so many owners have chosen to upgrade the original car audio. A saying to describe: "the road was blocked, but the music is not blocked". Some music lovers are losing more money. Refit a top class car stereo so that you can be free from obstruction on the path of graceful music.

But some owners wonder: is it so easy to upgrade a good stereo?

In the face of the market chaos modification shop, numerous sound more "famous brand", and car audio line is complex, so many owners hesitate. In fact, upgrading a good stereo is not a difficult thing. As long as you can master some of the following basic knowledge, you will be able to make yourself more confident in the process of upgrading the stereo. In a word: everything is up to me!

Let's talk about some issues that the audio tuner cares about

First, sound upgrade will affect the vehicle line?

Some owners have always wanted to upgrade the original car audio, but on a modified safety dependable psychological, hindering their vehicles for change, they always worry about the car stereo change line will affect the car on the other line, cause unnecessary trouble, so give up on the audio program. In fact, the sound upgrade will not affect the original car circuit, because the car audio is a separate system, and the original car circuit has nothing to do with it. Take any of a car: even without changing the original car audio, it will come out with the likes of CD, such as the host card. Even high-end cars will be equipped with DVD and GPS video entertainment systems, so they will have a dedicated audio tail line (dedicated power line). Such as the replacement of CD with DVD audio system, as long as the host behind the tail line for special tail line on a new machine equipped with can be connected according to the connection standard, do the corresponding protection measures, it will not have any impact on the original car circuit. Furthermore, if modified slightly larger, such as 1 Taiwan functions (power amplifier), using a matched special copper power line, power supply (because the need of this line with the original car circuit without any associated sound system modified from the supply battery directly after), but this power line must have the power and the whole system to match the line diameter (wire thickness), and then to it with a gold-plated waterproof insurance, it's relatively safe. If a larger number of system modifications, such as: more than 2 power amplifier, power is particularly large, then this time we must consider adding capacitors. Also consider adding batteries, engines and other power supply accessories. The location of these attachments is also important, you can give them a good look at the shape, and they are very good protection or hidden, and this is more security measures for the installation of the line. Even if they are installed, they will not have any impact on the original vehicle line.

Two, how to choose the host?

Now, the market is roughly divided into two kinds of mainframe: one is built-in without power amplifier host, commonly known as "dumb" machine". This kind of host signal transmission is stronger, and the sound quality is restored better.  However, this host must be equipped with power amplifier, because it is amplified by the power amplifier signal to work. But the market share of this console is very small. Because of its high price, it is generally not recommended to install such a host. There is another host, with a built-in power amplifier, the host is also divided into two kinds, one is a single disc CD or single disc CD MP3 compatible machine; the other is a multi disc machine. Now on the market with MP3 host is also more popular, in addition to seismic capacity than multi disk machine is poor, other functional aspects are basically beyond the multi disc machine. The price is also half of the multi disc machine (with the same grade), and in use is relatively simple and convenient. In the choice, first of all depends on its built-in power, if not installed after the power amplifier, we have to choose a larger power. Usually the nominal power on the host is its peak power. Example: 45W x 4, 50W * 4, etc.. And then you need to look at the instructions. There is a rated power output (RMS), that is, the continuous output power of the host (work power). Power about 19W-26W; second, look at the signal output terminal (RCA) has several groups, generally choose some RCA output of the host, so that after the upgrade audio play a big role. For example, a group of RCA output hosts push a four - way power amplifier, and then add two signal lines in two, the signal will be attenuated. In that case, the effect will be greatly reduced! Selection of high level output of the host, is also very important to upgrade the level of output audio, ordinary host values are relatively low, in the range of 1.5V-2V, but the level of some high-end host output value is between 4V-6.5V, such as after adding power amplifier provides good convenience. For example: the output of an 5V host to push a 4V power amplifier, so the amplifier efficiency can reach one hundred percent, can restore a good signal, ensure the output of the power amplifier without distortion; if the V host with a push of a 4V power amplifier, power amplifier also play not so the original work efficiency.

Three, how?