Countercurrent 1982

Chapter 146 Subwoofer

The materials are in place, and Duan Yun's assembly is also very fast. In less than half an hour, the speaker has been assembled simply.

The position in the middle of the speaker is reserved for the plastic knob, which is used to adjust the volume, but the knob has not been made yet, Duan Yun can only temporarily adjust the audio and volume manually.

After Gao Lei's tape recorder was connected to the speaker through the power amplifier socket, Duan Yun put in a disco tape and pressed the switch.

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

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

Duan Yun's production of speakers is definitely not just to let him produce a similar sound. In that case, it will be no different from other speakers on the market.

Therefore, the products he makes must have uniqueness that other products do not have. Only in this way will things be easy to sell.

Duan Yun had already thought of a speaker product that is very suitable for this year: the subwoofer!
The so-called 'subwoofer' is a common name or abbreviation for everyone. Strictly speaking, it should be: subwoofer.

The term "subwoofer" with local characteristics was pioneered by Mailan (now Maibo).

M200 is Microlab's first speaker in the beginning of 98. It is known as the "subwoofer" and entered the market with this.

For Microlab, this speaker means a lot.It is the first speaker with 2.1 structure launched by domestic multimedia manufacturers. M200 is the creator of "subwoofer". This word was introduced into multimedia by M200 and has been used till now. The most significant product is the M-200, which not only made Microlab famous, but also created the concept of "subwoofer" in the multimedia industry.

The first speaker designed by Duan Yun in the interest group of the university was actually the Microlab product for reference, but some optimizations and improvements were made in the circuit to make the effect of the speaker better.

If you want to make an excellent speaker product, you have to master some knowledge of acoustics.

As far as the audible audio analysis is concerned, it is composed of subwoofer, bass, low midrange, midrange, midrange, treble, superhighpitch, etc., which has the effect of strengthening the rhythm of the syllable.

Simply put, 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 audibility of the subwoofer is extremely limited to the human ear, but it can be felt by other human senses. This is the shocking feeling!As far as the needs of the audio program source reflected by the audio system and the home theater are concerned, the subwoofer only exists in a specific program source and needs to be restored. With it, the restoration of the program source can be made more solid. Without it, it will give people a lack of power, The feeling of energy.For example, in a movie theater or in reality, we can feel the shock of power and energy when the plane takes off, but if our home theater is not equipped with a subwoofer speaker or the configuration is unreasonable, people will not be able to feel this shock, but And that's all.

Before the 80s, both the music source and the playback equipment were in a very scarce state. The quality of the sound source (mainly records) was not high, and the sound quality of the playback device was not high, but as the late 70s and early 80s, it was easy to A large number of portable Japanese tape recorders flowed in, and the country ushered in a climax of popular music. Listening to music with tape recorders has become an important entertainment for many Chinese.

At present, young people in China like to listen to disco music and dance, but the sound quality of the speakers built into the tape recorders, whether imported or domestic, is very mediocre, and cannot reflect the shocking feeling of this kind of music itself.

What Duan Yun wants to design is a unique 'subwoofer' with shocking sound quality!
If you want to enhance the bass effect of the speaker according to the conventional design ideas 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 cabinet, the efficiency and instantaneous performance of the monomer.Although the large-sized monomer can push the air with a larger area, thereby producing more powerful low-frequency, but the large-sized monomer has a much heavier cone weight than the small-sized monomer, and it is necessary to push it out to a stronger low-frequency , In the part of the amplifier circuit, it must first have a stronger output power, which means more power consumption.

Duan Yun currently uses a small 4-inch speaker, which is a bit small in size. If he wants to make a subwoofer worthy of the name, Duan Yun needs to buy a [-]-inch or larger speaker, and [-]-inch to [-]-inch speakers should be the most suitable. If it is too large, the price will become very expensive, and ordinary consumers cannot afford it.

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

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

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

"Ah, I 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 speaker of the tape recorder?"

"Isn't this nonsense? If it's not good, how can I betray it?" Duan Yun gave Cao Dong a blank look and said, "By the way, what's the matter?"

"Brother, this is today's order, and it's all from the Mining Bureau." Cao Dong said, and handed the installation receipt and the ten Great Unity to Duan Yun.

"Well, let Cui Lin and Lei Zi go." Duan Yun nodded after receiving the money and the receipt.

"Brother, our business has started to decrease recently..."

"Isn't this a normal thing?" Duan Yun heard the words with disapproval, and then said: "Selling two or three sets of antennas a day can make a lot of money..."

"But……"

"But what?"

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

Duan Yun came to the rental house next to him, took a look and asked indifferently: "What's the matter?"

"Brother, we have too many antennas in stock now." Cao Dong frowned, and then said: "The two new brothers and the three from the Ma Junying have become more and more proficient in their work in the past two days , now our inventory of antennas is almost [-] sets, shouldn't we... suspend assembly first, and wait for some to be sold before..."

"Stop the fart!" Duan Yun interrupted Cao Dong, raised his eyebrows and said, "I'm afraid I won't have enough stock. The assembly work can't be stopped. Do as much as you can. The more you do, the more I will get a monthly bonus." The higher you go!"

(End of this chapter)