Countercurrent 1982

Chapter 157 Shocking Effect
On the last day of the technical transformation competition at the end of the month, Duan Yun finally got the carefully crafted elm speaker from Master Jing.

The beauty of this speaker made Duan Yun's eyes shine.

The wooden pattern is very beautiful, like the grain of quicksand. Long-term drying of charcoal gray makes the surface of the chassis reveal a simple amber color, which looks very beautiful at first glance.

In addition, the materials used are quite thick, and the places bonded with traditional pig fat glue are polished smooth and bright, obviously a lot of effort has been put into it.

Compared with the mass-produced wooden and plastic speaker casings of later generations, the speaker made by Jing Zhiqian is obviously a bit thicker. Although the shape is simple, it still gives people an amazing feeling.

After the speaker shell was in place, Duan Yun immediately started the assembly of the circuit board speaker.

Duan Yun first installed a thick layer of sound-proof cotton inside the speaker box, and then installed the power amplifier circuit board into the speaker.

The power amplifier board installed by Duan Yun this time can adjust the frequency, controlled by two knobs, all made by Duan Yun in his own workshop.

Considering the high power consumption of the subwoofer, the active speaker circuit designed by Duan Yun uses an [-]-inch and a [-]-inch speaker, which are placed in the upper and lower directions using the golden section design.

So after the components were assembled, Duan Yun connected the speaker line to the external port of the recorder.

After loading a disco tape, Duan Yun connected the power and pressed the switch.

"Bounce Kaka! Bounce Kaka!"

Rhythmic music came out of the speaker immediately, and the sound quality was obviously much better than the last speaker.

The subwoofer is very particular about the placement of the speaker. Duan Yun held the speaker back and forth in the room to try and listen, and finally felt that it was placed in the corner to the left of the door after the effect.

After Duan Yun simply adjusted the speaker volume and bass frequency, the dance music suddenly became much brighter and more pleasing to the ear.

"Brother, what are you doing?"

"The music is amazing!"

"what?"

Cao Dong and Cui Lin, who were working in the small room next to them, immediately ran over excitedly when they heard the dance music played from the speakers.

The young workers used to listen to the tape recorder left by Gao Lei every day, but it was the first time they heard such an exciting subwoofer sound quality.

In fact, the frequency, rhythm and regular sound wave vibration of music are a kind of physical energy, and moderate physical energy will cause the harmonious resonance phenomenon of human tissue cells. This resonance phenomenon caused by sound waves will directly affect people's brain waves, Heart rate, breathing rhythm, etc., make the cell body produce slight resonance, which makes people feel comfortable and at ease, and the change of rhythm makes people's body feel full and smooth.

This is also an important reason why subwoofers are all the rage in later generations and are sought after by many enthusiasts.

"Is this the speaker you mentioned, Brother Duan? It's so beautiful." After Cao Dong glanced at the speaker in the corner, he couldn't help but marvel, and reached out to touch it.

"Don't move!" Duan Yun opened his hand and said, "The varnish is not dry yet."

"Brother, the effect of this speaker is really good, much better than that of a tape recorder." Cui Lin beside him couldn't help but praise.

"Isn't this nonsense? If it's not as good as a tape recorder, why would I go to such lengths to make it?" Duan Yun scolded with a smile.

"It feels better than the set of speakers we had at the roller skating rink last time. The sound is comfortable to listen to." Cao Dong said intoxicated while listening to the dance music.

"It's not the same thing at all." Duan Yun curled his lips, and continued: "The one on the roller skating rink is called a speaker, and the one I designed is called a subwoofer. They are not of the same grade at all."

"Subwoofer? What a domineering name." It was the first time Cao Dong and others heard such a speaker name, and they praised it.

"Brother, why is it called a subwoofer? Can this thing be related to a cannon?" Lei Zi asked.

"Where are you talking so much nonsense? Brother Duan said he was a cannon! Look at the loudspeaker is so big, isn't it like the muzzle of a cannon?" Cao Dong turned his head and scolded Lei Zi.

"Hahaha." Duan Yun burst into laughter when he heard the words, turned his head and said to everyone: "Don't you guys want to know why it's called a subwoofer? I'll turn up the volume and frequency for you to listen."

As Duan Yun said, he squatted down and reached for the knob above the speaker with his left hand.

Now Duan Yun adjusted the volume and frequency to be relatively low, just to test the sound quality of the midrange, but this time, Duan Yun increased the bass frequency and volume a bit.

"Bounce Kaka!! Bounce Kaka!!"

The moment the bass was turned up, several people including Duan Yun suddenly felt that the sound of the dance music became shocking, and they had a clear sense of direction.

"This...is amazing!"

"I feel that the sound is so exciting!"

The enhanced bass effect instantly improves the details of the bass part of the dance music, making everyone present feel more shocked.

"Brother, you are so powerful!" Cao Dong who was standing behind was amazed, and said, "If this speaker is sold, it will definitely sell for a good price!"

Seeing the shocking effect of this subwoofer, Cao Dong and others admired Duan Yun from the bottom of their hearts. In their opinion, Duan Yun is simply a genius. The magical effect of this kind of sound, it is a proper way to crush all kinds of domestic audio equipment.

"Brother Duan, you smoke." Cui Lin took out a cigarette and handed it to Duan Yun. After lighting it with a match, he squatted down and carefully observed the subwoofer.

After seeing the two knobs above, he twisted them with his hands.

"Don't move around!" Seeing this, Duan Yun immediately frowned and shouted.

"Om..."

Duan Yun was obviously a bit late in shouting, Cui Lin had already turned the knob to the maximum position, and a powerful resonance came out of the speaker.

"Bounce Kaka!!! Bounce Kaka!!!"

Duan Yun's bass amplifying circuit is specially strengthened by a coupled broadband amplifier, and the bass frequency is even higher than that of the general subwoofer products of later generations, and there is no limit for a safe frequency.

So when Cui Lin adjusted the bass frequency to the highest, after several people in the room heard such a high-frequency bass effect, they all felt a strong shock effect, their heartbeats suddenly accelerated, and even the hairs on their bodies stood on end. !

"Buzz... bang!"

At this time, the glass of the window resonated with the sound for a short time, and there was a crisp sound. After two pieces of glass shattered, they fell to the ground with a crash!

Seeing this scene, Cui Lin Cao Dong and others were completely dumbfounded.

"Crack!" Duan Yun reacted quickly. After stepping forward to unplug the tape recorder, he pointed at the broken glass of the window and shouted to Cao Dong, "Salary deduction! You pay for the glass!"

(End of this chapter)