ps: ps: here it is again...... It's still hot, 24o monthly passes plus more out of the pot!!

"Hello teacher, yes, that's it, this is called the audio compression limiter, the purpose is to suppress the current amplitude of the input power amplifier, it can set a threshold, the current beyond this threshold will be compressed by the circuit, and then ......" Hong Tao took the instructions and said, quickly turned to the page about how to use the voltage limiter, and explained it to the English teacher according to the picture above.

"Good...... You said this first, the teacher doesn't understand what the threshold is, come on, come on, you tell this uncle, he understands. Master Wang, what he said is reliable, let him say this, I probably know what these abbreviations mean, why don't we listen to him? Dead horses are used as live horse doctors, maybe it will work?" The English teacher didn't wait for Hong Tao to finish speaking, and grabbed him and brought him to the bald man.

"Kid, how do you know these things? Do you have lighting and sound work at home?" The bald man didn't ignore Hong Tao directly like that fat man, but squatted down and asked Hong Tao with a smile.

"I don't want to answer your questions, the question you asked has nothing to do with whether I can help you, so let's tell you about this set of equipment, if you think it's reasonable, then let's talk about it again, if you think what I said is unreasonable, then I'll go home, what do you think?" Hong Tao didn't have the time to make up this nonsense, he just couldn't bear to watch such a good device being ruined by these people.

"Well, I'll be humble! Come, let's stop what we're doing and come here! Let's listen to a class too!" The bald man looked at Hong Tao's posture. It doesn't seem like a child messing around, so he gritted his teeth and stomped his feet, and simply listened to it once, anyway, he couldn't delay any time, and the task was almost finished, so who were you afraid of laughing?

"It's an effect, it can't be connected to the mixer. The mixer needs to use an auxiliary output line to send the signal here first, and then return the processed signal from the effects to the input part of the mixer. Generally speaking. The effects only handle the vocals, not the musical accompaniment, so the inputs on the mixer have to be grouped, and the vocal inputs of a few channels are grouped into the aux outputs. The music input goes directly to the total output. In this way, the vocals go around the effect, go back to the mixer, and then go into the total output with the music. To put it simply, it is to add effects to the vocals, that is, all kinds of reverberation delays, how to add them, I will talk about it later. There are hundreds of cured effects in it, if it is not suitable. We can also make our own zuò effect and add it to it. Hong Tao pointed to the nearest effect and talked about how to use it.

“…… You, go and move a chair, so you can't see it! Little classmate, you go on, go on. As soon as Hong Tao's words stopped, none of the surrounding masters and the young apprentices behind them made a sound, they all looked at Hong Tao in a daze, those apprentices let Hong Tao talk about these professional terms and words, and even if these masters have never seen this kind of equipment, but this basic principle is still understood, they know very well whether what Hong Tao said makes sense, so Hong Tao mixed a chair to sit, and everyone else stood around and listened.

"Let's talk about this crossover, its function is very simple, according to a certain frequency, send the high frequency to the tweeter power amplifier, the middle frequency to the midrange power amplifier, and the low frequency to the bass power amplifier. I just looked,Those speakers have a frequency working range,It can also sound audio in this range,But the sound quality is very bad,This is a professional performance-level speaker,Your leaders are really generous,Actually sent the live performance-level equipment to the Children's Palace。 Hong Tao walked over and patted the speakers, this thing is not a good professional box in the future, it is okay to listen to it in the theater, and it is put in the stadium to go to the concert site, the sound pressure level is not reached, and the bass part is even more turbid.

"Oh...... I see, I'm still wondering why I give 4 amplifiers and 6 speakers, this doesn't match, it turns out that this thing is doing weird......! Hey. "The fat man who was about to blast Hong Tao away just now patted his fat head, understood it, and used your words for Hong Tao.

"That's right, the subwoofer is powerful, so one amplifier with one subwoofer, and one tweeter and midrange cabinet with two amplifiers is exactly four amplifiers. But what if the amplifier breaks down in the future?" Hong Tao deliberately sold a pass.

“…… I don't know...... "A circle of people, you look at me, I look at you, and then shake their heads together."

"The power amplifier has a bridge function, the output power is doubled after the bridge, but it is best not to use it for a long time, if an amplifier is accidentally broken, and it is too late to replace it, then switch one of them to the bridge, drive a pair of tweeters, get rid of the midrange speaker, adjust the crossover, the effect is not too bad. "Hong Tao enjoys this feeling that you don't know, but I know.

"Reliable! Reliable! Hey! You...... Go out and buy a few popsicles for Teacher Zhang and ...... The little master quenched his thirst, this hot day, there are no long eyes!

"Fat uncle, you're engaged in sound engineering, right? These two uncles are playing with stage lighting, aren't they?" Hong Tao looked at the bald, the fat man, and the middle-aged man who spoke first, probably already knowing their work. Fat people are clearer about the connection and debugging of audio equipment, while bald and middle-aged people are more concerned about the details of the use of equipment.

"That's right, my surname is Gao, call me fat uncle also, it's fat, this is Uncle Wang, this Uncle Li, this is Teacher Zhang, I'm responsible for installation, the two of them are responsible for commissioning, Teacher Zhang is an English teacher we specially invited from Dongzhimen Middle School, this is not all in foreign language, we can't understand it! Fortunately, with you, now I understand a rough idea, or you tell me about the others, by the way, I still have a few plugs here, what is this thing for? I figured it must be connected to the amplifier and the speakers, but I've never seen a plug like this? The fat man, like a trick, pulled out a pair of metal plugs from his trouser pocket, the thickness of a rolling pin, with bayonets on both sides and a slot in the middle.

"This is an American-style plug.,It's connected to the speaker.,Oh,I know.,This batch of speakers was originally used by the Americans themselves.,I don't know why they were sent to us again.,So I didn't pull and replace the plug mode.。 This is a good thing! Lao Mei uses things for themselves, they don't dare to cut corners, good things! Unscrew this,The speaker wire is welded inside,And then screwed on,When plugged in, this slot is aimed at the protrusion in the speaker jack,Plug it in,And then twist it,It's locked,You pull the wire off,The plug won't loose,The tighter you pull!" Hong Tao knows this kind of plug, this American plug is generally used on JB1 professional performance speakers, there is no other special place, that is, the connection is convenient and firm, unless deliberately damaged, it will never fall off by itself.

"Hmm...... That's the truth...... I'll try...... Hey!That's right, it really can't be dropped!" The fat man understood, but he was still not at ease, so he ran to the back of the speaker and plugged it in, which was completely convinced.

"Okay, I'll go, and the rest of you will, surely make it smarter than I am. Hong Tao knew that these people were not mallets, but they had never seen these kinds of equipment, so they were blind for a while, and they were not necessarily inferior to themselves compared to technology.

"Don't...... I'll ask the teacher from the Children's Palace to go to your house and talk to your parents in person, and say that you will stay in the Children's Palace and work overtime! You just sit here, we have a tape recorder and a tape, you can listen to whatever you want, we will connect this set of equipment immediately, how about you wait for it to make a sound before leaving?" The fat man hurriedly grabbed Hong Tao and said something in a row.

"Well, then I'll let it go, let's not really connect, how about a simple connection here? Solder a few plugs to do a few wires, there are so many people, I estimate that it will be over in 2 hours, and you don't need to invite me to dinner. By the way, find someone to say hello to our school teacher, don't find me and give me a punishment!" Hong Tao is actually reluctant to go, if this kind of equipment is not to go to a professional place, it is difficult to see, and he also wants to have a good time after it is connected.

Don't look at the fat man's temper, but the work is not weak, he took the lead, plus those young apprentices, and soon welded all kinds of balanced and unbalanced connecting wires, Hong Tao took two at random and looked at them, the craftsmanship is really not to say, the solder joints are the same as the machine qì welding, neither oil nor virtual welding, and he really doesn't have this brush.

"Oops...... My uncle! It's you!Hahahaha!" Hong Tao was idle, so he helped the bald master Wang and the middle-aged man to install those equipment on the rack, and he suddenly put a flat and long packing box under a pile of equipment, with the words "mu" netthe, he was stunned at that time, and then as if he saw a relative, he jumped up and started to unpack.

"Where are the child's parents?" This is your uncle?" a little apprentice with a foreign accent startled Hong Tao, looked around and saw no outsiders, and muttered casually.

"Your uncle is flat! You don't understand, do your job!" Although Hong Tao didn't look up, he didn't let go of the young man.

"Isn't it just an electronic piano, I think it's a good thing!" The little apprentice was not convinced, and watched Hong Tao unpack the box and take out a long piano keyboard-like thing from inside. (To be continued!)

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