Even if the genuine main unit cannot be replaced, the system up [car audio "Why?"]

While being interested in upgrading the car audio system, I feel difficult to understand and can't take the first step ...This series is developing with the aim of eliminating "simple questions" regarding car audio that such people tend to embrace.

If the genuine main unit cannot be removed, is it impossible to sophistose the system?

First, he explains questions that tend to be embraced about the "genuine main unit".First of all, for Toyota car owners, we have introduced the solution to such questions, whether the Toyota vehicle genuine display audio cannot be used more conveniently.Following that, this time, we will elucidate the "?" That drivers who are riding a "car that are difficult to exchange genuine main units", not just Toyota cars.

"If you can't exchange it from a genuine main unit to a commercial product, can you upgrade your car audio system?"

Let's enter from the conclusion.The answer is "no".

By the way, let me explain how the system up will be fulfilled if it can be replaced with a commercial main unit.There are three points.The first is "having high tuning abilities", the second is "it is easier to develop the system", and the third is "improving the accuracy of music signals."

So, if the genuine main unit cannot be changed, what to do is the solution, "Introducing DSP".

"DSP" is an abbreviation of "digital signal processor", which allows digital control of music signals.Therefore, even without replacing it with a commercial main unit, the system can be given a high tuning ability.Moreover, the development of the system will increase at once.By the way, the tuning ability of the recent "DSP" is high and high.Rather than replacing it with a commercial main unit, it demonstrates the advantage in this regard.

If you use "DSP", the quality of the power amplifier will increase!

There are two types of "DSP".One is "DSP with a built -in power amplifier" and the other is "Single DSP. These differences are simple and clear. The former has a built -in power amplifier, and the latter does not have a built -in.The hurdle of introduction is higher.However, you can choose your favorite external power amplifier, so it is easy to build your favorite system.

By the way, there is a difference between the internal and the external, and no matter which one you use, the power amp will be added to the system, so the potential of the system will be improved in that respect.

Here, another question may cross your head.The genuine main unit also has a built -in power amplifier, so you may think so, "Is it okay to use it?"But that is impossible.

Because I want to control the signal in a weak state before the music signal is amplified with a power amplifier.This is because the signal after amplifying is difficult to handle.Therefore, when using "DSP" to control the signal, the power amplifier must be placed in the stage.However, the signal cannot be returned to the main unit.There are two reasons.

The first reason is that "the genuine main unit does not have an external audio input terminal of many CH."When the signal is controlled by "DSP", the signal for the tweeter and the signal for the midwoofer will be controlled separately.In other words, if the speaker used is 2 -way, the signal will be divided into four systems.However, the main unit does not have four inputs.

The second reason is that "the internal power amplifier is weak and not so good."So you don't have to use it.For these reasons, when adding "DSP", a power amplifier will be prepared again.

With "DSP", you can input "speaker output" in the genuine main unit!

By the way, many genuine main units do not have external audio output.In that respect, the development is poor, but how do you connect "DSP"?

"DSP" has a "high -level input" input terminal.This is for entering signals after being amplified by the built -in power amplifier of the main unit.Therefore, if you connect the wiring of the speaker output of the main unit to "high -level input", the connection with "DSP" can be completed.Then, in "DSP", the signal is once returned to a weak state, and the signal control is performed.

In fact, when the system construction of a genuine main unit + "DSP" is executed, one point, a part that becomes a bottleneck in terms of sound quality performance.That is, "the quality of the entrance of the sound is low."Since the source unit remains the genuine main unit, the reading accuracy of the signal remains cheap.

However, it can also raise that part."DSP with built -in power amplifier" and "single DSP" also have an external input terminal, so you can connect smartphones and portable DAPs.It is more advantageous to connect them directly than to play them through a genuine main unit.There are times when you want to listen to navigation sounds or listen to radio, so it is better to connect the genuine main unit, but when listening to music, it is better not to use the genuine main unit.Moreover, many "DSPs" also have a digital input terminal, so if you make a digital connection, the situation will be further improved.

Utilizing "DSP" in this way, the condition of the car audio system can be comprehensively enhanced.I want you to refer to it.

That's it for this time.From the next time, we will continue explaining "simple questions" regarding car audio.looking forward to.

Shozo Ota | After graduating from the University of Writer, he worked for a publisher and gained a career as a magazine editor.After he served as the editor -in -chief of car magazines, interior magazines, and car audio magazines, he retired from a company that has been working for about 20 years and is free.He is developing a wide range of writing, mainly car audio, car navigation, and other car electronics.He is also working on music activities as a life work.