Huayu for engineering students

Chapter 147 Products
After that, Wang Xu selected several different combinations according to the combination of high, medium and low collocations and the price of the speakers.This is almost enough, set the size of the hole for Populus euphratica, and then let him process and polish it.

These selected parts can make almost ten sets of speakers of various sizes and specifications. In addition to keeping a large set for the listening room, a set for home, a medium set for Wang Fei, and a set of active speakers for the dormitory, I still have to make a few sets for Zhou Feng's father to keep as samples, and the calculations are about the same.

When will I call Wang Fei back to record some songs, with a good speaker, I can enjoy the sounds of nature at home, I will be happy just thinking about it.

Looking at the room full of large and small speakers, Wang Xu is very satisfied. The recent busyness has finally yielded some results. From small to large, there are seven or eight varieties of active and passive speakers, forming two complete series.

These speakers have been carefully polished and auditioned by Wang Xu's hands. This is the last step before the speaker is painted, and then a layer of anti-corrosion paint is enough.Unlike the reflective paint surface that must be applied to pianos, varnish or even wax oil can be used directly on speakers.

For the painted speaker, Wang Xu arranged the circuit carefully. There is no circuit in the small speaker, and it can be directly driven by the power amplifier. The signals received by the treble and bass are the same, and whether it can be expressed depends on the attributes of the speaker itself. That's all.

This is why sometimes the treble head is burned when the bass volume is too loud. That is because the coil of the tweeter head cannot bear the unallocated high-power bass signal.

However, there are still circuits in advanced, medium and large speakers, but these circuits are relatively simple and do not need a separate power supply.

Generally, it is only used for frequency division, and is responsible for dividing signals of different frequency bands to each speaker, which is used for matching different power amplifiers with speakers.

On the one hand, it is to protect medium and large speakers from being easily burned due to signal input overload. The speakers of this kind of speakers are not cheap.

On the other hand, the distribution circuit can be optimized for different speakers, and the optimization of different speakers is also different, which is very personalized. Therefore, in order to get the best effect, the distributor needs to be built in the speaker.

Moreover, each speaker has its own unique parameters, and the impedance is only a range, and there is no standard, so it is hard to say whether the pure sound signal can be promoted.

This requires the circuit to be buffered. If the power is low, it will not sound at all. When the power is too high, even if it burns out, just replace the circuit board. It is not necessary to replace the expensive speaker.

Even, some particularly large speakers even have their own amplifiers in them, preventing smaller power amplifiers from being completely unable to push them.

Wang Xu's speaker here is basically not so complicated in design, even if it is a large one, there is no independent amplifier design.It is just that the frequency division is made in the speaker to optimize the sound unit, that is, the signal distribution problem of the high school bass speaker.

The biggest one is also the one that Wang Xu intends to use in the listening room. It can be sent abroad for exhibition evaluation. It would be perfect if they can come back with an award.

Why is it mixed?The quality of Wang Xu's speakers is completely fine, but there is no problem with the sound of top speakers, the problem is that you have to be famous.For high-end things like speakers, which are all about feeling, the reputation bonus is not ordinary.

Fame depends on years of operation. A well-known speaker brand has been a cutting-edge brand for ten years. It will only dare to be famous in 30 to 80 years, and it will be old in [-] to [-] years.

In this field, it is not that there are no stories about the rapid rise of grassroots, but the success is very metaphysical. What happens to someone who appreciates it, what happens to special events, anyway, it is similar to fantasy novels.

Wang Xu doesn't know much about business, but you can ask Zhou Feng. His family is very interested in making audio equipment, but they don't have any technology.If it's all on your own, how much should you take.

This kind of cooperation is not simply a matter of selling technology. The technology here is difficult to value, and there are patents, but the licensing method is very different whether it is exclusive or authorized.Forget it, don't want to, just talk to them.But this kind of cooperation is completely different from the previous cooperation between countries.

Wang Xu called back to the dormitory to find Zhou Feng. Zhou Feng said that his father and his uncle would come to the capital next week, and Wang Xu agreed to have an interview at that time.Although Wang Xu doesn't value money very much, the interests he needs must be won.

It’s okay to throw this technology into the technology pool that you have conceived. After all, speaker technology, especially active speaker technology, is too easy to copy.

As for the high-end speakers, to be honest, they don’t make much money. They are as good as the top supercars.

If you want to say that it took decades to study something about speakers, it is pure nonsense, because no one can figure out the exact relationship between perceptual hearing and acoustics, and all speakers are tested.

Since it is a trial, it is completely normal for someone to produce a particularly beautiful sound quality at one time. It is not impossible for you to produce a similar quality after decades.Therefore, in terms of technology accumulation, spending decades is not much deeper than the accumulation of others who have tried it once and got results.

Worst of all, you might not even be able to figure out why the sound is bad.For example, you use walnut to make a speaker with bad sound, but you must not say that walnut is not good, because some good speakers are made of walnut.

Everyone tries it out. The masters are those who have a higher probability of trying out good things. Or how can I say that this profession is very metaphysical? It is normal for an acoustic master and a bunch of physics theories to fail to make good speakers. matter.

Wang Xu doesn't know whether he can make a good speaker without the sales of the system. Wang Xu is sure that he can make a good one. After all, his ears are here, and he can always find a good one after experimenting.

But he is really not sure about making a speaker of the current level.There are quite a lot of speaker design masters who have only produced one kind of boutique in their lifetime.

Moreover, the operating cost of high-end speakers is very high. You have to operate various audio-visual exhibitions and arrange booth auditions. This booth is not like an ordinary booth for selling cars. It is just a one-off thing that looks good.

He has to directly build a listening room according to specific acoustic principles, so that one person can put it in for trial listening. Think about it, how expensive it is to rebuild an audio-visual room every time you participate in an exhibition.

In addition, participating in various awards is also a big trouble. If you rush in, you can't find the gate of the temple with a pig's head.Moreover, in fact, most of the European acoustic awards are not well-known in China.

Most people can't tell the difference between the European Design Award and the European Golden Ear. Even if they know it, they can't feel the grandeur of it. They only think that Europe has won the award, oh, so far away.

The result is that you have won an award and you have to promote it yourself.In the end, even if a speaker sells for tens of thousands of 10,000+, you can’t make much money, because the sale of high-end speakers is very expensive, and every store has to repair the listening room.

In the end, there are few buyers who can make a deal, and the cost is shared. It is no wonder that high-end speakers are not expensive.

Let's wait and see what Zhou Feng's family thinks next week. In fact, Wang Xu thinks that it might be better to share the design of this thing.Wang Xu can guarantee that even if speakers are made according to the same drawings, different manufacturers can make all kinds of strange things, and the effects are completely different.

With more manufacturers competing, the probability of producing a high-end boutique is higher. Although Zhou Feng's family is close to the water, it is really uncertain whether it will be able to ride the dust.

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(and also)
(End of this chapter)