Chinese entertainment for engineering students

After that, Wang Xu selected several different combinations according to the combination of high, medium and low and according to the price of the speakers. This is almost enough. I decided the size of the holes for Populus euphratica, and then asked him to process and polish them.

These selected parts can make almost ten sets of speakers of various sizes. In addition to leaving a large set for the listening room, a set for home, a medium-sized set for Wang Fei, and an active set for the dormitory, I still have to make a few sets for Zhou Feng's father to keep as samples, but it's pretty much the same.

When will I call Wang Fei back to record some songs? With good speakers, I can enjoy the sounds of nature at home. It’s wonderful to think about it.

Looking at a room full of large and small speakers, Wang Xu was very satisfied. His recent busyness had finally yielded some results. From small to large, there were 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 speakers are made and painted. After that, a layer of anti-corrosion paint is applied. Unlike pianos, which must be painted with reflective paint, speakers can be painted directly with varnish or even wax.

After painting the speaker, Wang Xu carefully arranged the circuit. There is no circuit in the small speaker. It can be driven directly by the power amplifier. The signals received by the treble and bass are the same. Whether it can be expressed depends on the properties of the speaker itself. That’s all.

This is why sometimes when the bass volume is too loud, the tweeter will be burned instead. That is because the coil of the tweeter cannot withstand the undistributed high-power bass signal.

However, high-end, medium and large speakers still have circuits inside them, but these circuits are relatively simple and do not require a separate power supply.

Generally, it is only used for frequency division, responsible for dividing the signals of different frequency bands to each speaker. This is used to match the speakers to different power amplifiers.

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 and very personalized. Therefore, 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 a pure sound signal can drive it.

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

In fact, some particularly large speakers even have their own amplifiers in them to prevent smaller amplifiers from being unable to drive at all.

Wang Xu's speakers here are basically not that complex in design. Even the large ones do not have independent amplifiers. The frequency division is just done in the speaker to optimize the sound unit, that is, the signal distribution problem of the high, middle and woofer speakers.

The biggest one is also the one that Wang Xu plans to use in the listening room. It can be sent abroad for evaluation. It would be perfect if it can win an award and come back.

Why mixed? There is absolutely no problem with the quality of Wang Xu's speakers, but there is no problem with the sound of top-level speakers. The problem is that you have to be famous. For something as high-end as a speaker, it all depends on the feel. The bonus of fame is not ordinary.

Reputation is something that depends on years of operation. A famous speaker brand will be considered a cutting-edge brand after ten years of operation. It can only be called famous after twenty or thirty years, and it can be said to be an old store only after seventy or eighty years.

There are not completely no stories of grassroots rapid rise in this field, but the success is very metaphysical, such as meeting someone's appreciation, encountering special events, etc., anyway, it is similar to fantasy novels.

Wang Xu doesn't know much about business, but he can ask Zhou Feng. Their family is very interested in making audio equipment, but they don't have any technology. If it's all up to you, then you should take as much as you need.

This kind of cooperation is not just about selling technology. The technology here is difficult to value. There are patents, but the licensing method is exclusive or licensed. There is a big difference. Forget it, don’t think about it anymore, talk to them first. But this kind of cooperation is completely different from previous state cooperation.

Wang Xu called back to the dormitory to find Zhou Feng. Zhou Feng said that his father and his uncle would come to the Imperial Capital next week, and Wang Xu promised to have an interview then. Although Wang Xu doesn't value money very much, the necessary benefits must still be obtained.

You can also throw this technology into the technology pool of your own imagination. After all, speaker technology, especially active speaker technology, is too easy to copy.

As for high-end speakers, to be honest, they don't make much money. They have the same virtues as top-end supercars and have a great reputation, but they are good if they don't lose money.

If you say that speakers have been studied for decades, it is just nonsense, because no one can understand 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 in one go. 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 others' accumulation of results after just one try.

Worst of all, you may not even be able to figure out why the sound is bad. For example, if you use walnut wood to make a speaker with bad sound, you can never say that walnut wood is not good, because some good speakers are made of walnut wood.

Everyone makes it through trial and error. Masters are those who have a higher probability of producing good things through trial and error. Or how can we say that this industry is very metaphysical? It is quite normal for an acoustic master and a lot of physics theories to be unable to make good speakers. matter.

Wang Xu doesn't know if he can make a good speaker without selling the system. Wang Xu is sure that he can make a good speaker. After all, his ears are here. If he tries, he can always find a good one.

But he really wasn't sure about making a speaker of this quality. There are quite a few speaker design masters who only produce one high-quality product in their lifetime.

Moreover, the operating costs of high-end speakers are very high. You have to run various audio-visual exhibitions and arrange auditions at the booth. This booth is not like an ordinary car-selling booth. Just put up a disposable thing and look good.

He had to directly build a listening room according to specific acoustic principles so that one person could put it in and listen. Think about it, how expensive it would be to have to re-create an audio-visual room every time he participated in an exhibition.

In addition, participating in various awards is also a big trouble. If you jump in hastily, you will not be able to find the temple gate 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 superiority between them. They just feel that Europe has won the award, oh, so far away.

The result is that if you win an award, you still have to promote it yourself. Finally, even if a speaker sells for tens of thousands or hundreds of thousands, it will not make much money. This is because the sales of high-end speakers are very expensive, and each store has to specialize in repairing listening rooms.

In the end, there were only a few buyers who could make a deal, so when the cost is spread out, it would be surprising that high-end speakers are not sky-high prices.

Let’s wait and see what Zhou Feng’s family means next week. In fact, Wang Xu thinks 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 them in various ways, with completely different effects.

The more manufacturers compete, the greater the chance of producing a high-end product. Although Zhou Feng's family is close to the market, it is still uncertain whether it can be the best.

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