The materials are in place, and Duan Yun's assembly is also very fast, and it only took less than half an hour to assemble the speaker simply.

The position in the middle of the speaker is reserved for the plastic knob,Used to adjust the volume,It's just that the knob hasn't been made yet,Duan Yun can only manually adjust the audio and volume temporarily。

After connecting the speaker from the amplifier socket behind Gao Lei's tape recorder, Duan Yun put in a disco tape and pressed the switch.

Soon, a fast-paced melody came out of the speakers, and the effect sounded pretty good, and the sound seemed to be clearer than the original two speakers of the tape recorder.

Although the speaker test was successful, Duan Yun did not show too much excitement.

Duan Yun makes speakers,It's definitely not just for him to make a similar sound,In that case,It's no different from other speakers on the market。

So the product he makes must have a uniqueness that other products don't have, and only then will the thing be easy to sell.

Duan Yun had already thought of a speaker product that was very suitable for this year: subwoofer!

The so-called 'subwoofer' is a common name or abbreviation for everyone, strictly speaking, it should be: subwoofer.

The term "subwoofer", a vernacular characteristic, was pioneered by Mai Lan (now Maibo).

The M200 was the first loudspeaker in the early 98 years of Mabo, known as the "subwoofer", and entered the market with it.

For Maibo, this speaker means a lot. It is the first 2.1 structure of the speaker launched by the domestic multimedia manufacturer.00 is the pioneer of the "subwoofer", the word is introduced to multimedia by M200 and has been used to this day, it can be said that it is a product of great significance to the entire industry, and it is also this M-200, in addition to making Maibo famous, it is also the creation of the multimedia industry"subwoofer" concept.

At the beginning, Duan Yun designed the first speaker in the university interest group,In fact, it is the product borrowed from Maibo Company,Only some optimizations and improvements have been made in the circuit,The effect of the speaker has become better。

If you want to make a great loudspeaker product, you have to have some knowledge of acoustics.

As far as the audio analysis that can be heard by the human ear is concerned, it is composed of heavy bass, bass, low midrange, midrange, mid-high, treble, super treble, etc., which has the effect of strengthening the rhythm of syllables.

To put it simply, the bass is the basic framework of the sound, the midrange is the flesh and blood of the sound, and the treble is the detailed reflection of the sound.

The audible sound of the subwoofer to the human ear is extremely limited, but the other senses of the person will feel it, and this is the feeling of shock! As far as the needs of the audio program source reflected in the audio and home theater are concerned, the subwoofer only exists in the specific program source and needs to be restored, and it can make the restoration of the program source more solid, and without it, it gives people the feeling of lack of strength and energy. For example, in the cinema or in reality, we can feel the power and energy of the plane taking off, but if our home theater is not equipped with subwoofer speakers or the configuration is not right, people will not be able to feel the shock, but that's all.

Before the 80s, whether it was the sound source of music or the playback equipment, it was out of a very scarce state, the quality of the sound source (mainly the record) was not high, and the sound quality of the playback was not high, but with the end of the 70s and the early 80s, a large number of easy-to-carry Japanese tape recorders flowed in, and the country ushered in a popular music **, and listening to music with a tape recorder has become an important entertainment for many Chinese people.

At present, young people in China like to listen to disco music and dance, but at present, the sound quality of the speakers that come with both imported and domestic tape recorders is very mediocre, which cannot reflect some of the shocking feelings of this music itself.

What Duan Yun wanted to design was a 'subwoofer' with characteristics and shocking sound quality!

If you want to enhance the bass effect of the speaker according to the conventional design idea of the subwoofer, in addition to amplifying the bass frequency on the circuit, the speaker must also use a large size.

In fact, this problem involves factors such as the driving power of the subwoofer itself, the type of the cabinet, the efficiency and instantaneous performance of the unit. Although a large cell can push the air over a larger area and produce a larger amount of low frequency, the large cell has a much heavier cone weight than the small one, and if you want to push it out of a stronger low frequency, you must first have a stronger output power in the amplifier circuit, which means more power consumption.

If you want to make a veritable subwoofer, Duan Yun needs to buy a speaker of more than 4 inches, five inches to eight inches should be the most suitable, if it is bigger, then the price will become very expensive, and ordinary consumers cannot afford it.

However, since Duan Yun is currently produced in small batches, if you meet rich enthusiasts, you can also take the customized route, which can also make a lot of money.

Today, Duan Yun used this speaker just for a simple test,Next, he needs to continue to improve and improve this set of speakers,Make it a distinctive product。

"Brother, what are you doing here?" Just as Duan Yun was thinking, Cao Dong pushed the door and walked in.

"Ah, I've made a speaker, and I'm testing it. Duan Yun said with a smile.

"It's beautiful...... Cao Dong touched the wooden speaker on the table with his hand, and then asked: "Brother, is the song played by this thing better than the sound played by the tape recorder speaker?"

"Isn't this nonsense? If it's not good, how can I betray it?" Duan Yun glanced at Cao Dong when he heard this, and said, "By the way, is there something wrong?"

"Brother, this is today's list, all from the Mining Bureau. Cao Dong said, handing the installation slips and ten pieces of unity to Duan Yun.

"Well, let Cui Lin and Lei Zi go. Duan Yun nodded and said after taking the money and receipts.

"Brother, our business has been declining again recently......

"Isn't this a normal thing?" Duan Yun was a little unimpressed when he heard this, and then said: "Selling two or three sets of antennas a day is a lot of money......

"But ......"

"But what?"

"Brother, go to the storeroom and have a look. Cao Dong said, pulling Duan Yun to the rental house next to him.

Duan Yun followed him to the rental house next to him, and after taking a look, he asked lightly, "What's wrong?"

"Brother, we have a little too many antennas in stock right now. Cao Dong frowned, and then said: "The two new brothers and the three on the side of the Ma military camp have become more and more proficient in their work in the past two days, and now our antenna inventory is almost three hundred sets, shouldn't it be ...... Suspend the assembly first, and then ...... when you sell some."

"Stop a fart!" Duan Yun interrupted Cao Dong's words, raised his eyebrows and said: "I'm afraid that I don't have enough inventory, I can't stop assembling it, I can do as much as I can, and the more I do, the higher the bonus I will receive at the end of the month!"