[Home Theater Network HDAV.com.cn] Why is my home theater audio not good? It is very good to hear from the manufacturers, why it is different after buying home. In fact, if you want to play the sound, you can't just focus on adjusting a certain link, and neglect the influence of other factors. In addition to fitting the equipment properly, it is necessary to have a good listening environment, careful adjustment and proper use in order to achieve the goal. These beliefs are believed to be understood by most enthusiasts, but there are not many friends who can take care of the overall play. In terms of equipment use, many enthusiasts don’t know much about the performance of their equipment, often because of improper use. The reason is attributed to certain equipment.
The proper volume is necessary to ensure the hum
In fact, whether it is humming or not is closely related to whether the operation is correct or not. Many friends listen to music at the same volume, regardless of what music they listen to. They think that when the recordings are released, they naturally snoring. What’s more, they think that loud is a squeak, so whether you listen to the symphony or a single instrument, use the same The volume went to listen, and the result was that Deng Lijun’s voice was like Hong Zhong, and the petite body became Zhang Ba King Kong. The violin is enough to rival the cello. The guitar’s treble is like a grand piano, and the bass is like a drum. When you are frowning and boring in your heart, they are proud of the above sounds, telling you how dynamic his system is, how singer is enough, how much recording details... Wait a minute, sometimes I don’t know how to tell him.
Why are these friends going to listen to music like this? This is purely because they rarely listen to real concerts. I mean orthodox live concerts, like the large orchestral performances of the two halls. When you hear the symphony orchestra playing in the same concert hall, and the volume of the single instrument and the sound of the real instrument, they can understand what is called the ratio, in order to truly understand the volume loudness of a single instrument playing sound. . In addition to listening to live music, another way to get the most out of the sound and volume of the instrument is to listen to some live performances without a megaphone system, or simply buy a musical instrument and come back "hands-on", then when you go to listen to the canned music of the CD When you don't adjust the volume without any rules, not only the sound is distorted, the instrument is deformed, the ear is sinned, and the hearing may be damaged after a long time! The highest skill of the volume control and the best performance of the equipment, of course, The volume that can be played by an orchestra, a single instrument, or a real person, is the original expression!
Volume control is an art, and the volume is large enough to affect the sound of the entire system. Why is the home theater audio not good? There are many reasons for this problem. It is because there are too many. If you can’t even figure it out, I think it’s harder for others to find out why. The reason why the sound is not good is probably because the quality of the equipment bought is not as good as you want, so it is not good to listen to; it may be mismatched, so it is not good to listen; of course, it is more likely that the speaker is not in the right position, so it is not good. In short, it is absolutely true that it is not good to listen to, and it must have its unpleasant factors. Here, I want to open the other, just mention that two ordinary people are easy to ignore, and will not consider carefully. Perhaps, the reason why the audio is not good is that it is so simple, it is clearly in front of you, but you ignore the sound when you listen to the sound every day, and desperately go to the horns. What are these two reasons? In fact, it is a big reason, that is, "Is your volume too loud?" For this big reason, it will turn into two small reasons: the speaker can't load too much. Volume; space can't load too much volume.
The volume is too loud to know. Most people have a misunderstanding, thinking that as long as it is an audio equipment, how much louder it is, how loud the sound equipment should be able to sing well. In fact, home theater audio equipment has its own limit when it comes to maximum sound and minimum sound. In terms of electronics, the amplifier should be the signal obtained by the sound source, and the original signal can be amplified without distortion. And the horn is an audible sound that has an audible range by converting the audio electric power signal in the audible range through the transducer (speaker unit). In order to properly select a good speaker, you must first understand the properties of the sound signal, and then ask the speaker to restore the audio electrical signal to a realistic and natural sound "as is". So properly adjust the volume so that the music played is mostly undistorted, which is a necessary condition for you to hear the buzz. So the correct volume adjustment is very important. It is definitely not a lot of whispers. Why can't the volume be too loud? There are two reasons: First, the amplifier and the speaker may not be so loud, and the distortion is serious, that is, the input signal we are cutting is cut; the second is that the space for listening cannot be Bear so loud. It is easy to understand the distortion of the machine. It is because it is not powerful enough, but it has to use up the power of feeding, and of course it is there. As for the speakers, this is the point I want to talk about. Usually the power (or volume) that each speaker unit can withstand has its limitations. If it is within its capabilities, it can produce very low distortion, very pleasant sound. However, once the volume exceeds its own load, it will produce severe distortion. When the speaker unit is distorted, the sound produced will be harsh.
The speaker has a distortion limit and cannot be turned too loud. Here are a few examples to prove: First, if you feel the sound is ugly, turn the volume down, usually it is no longer difficult to listen to; second, the general mini bedside sound, if you listen at a certain volume, I often find that it is better than my own large set of audio! Of course, after opening a loud sound, it is completely out of shape; third, if your car is soundproof, it is often good when listening to music at a moderate volume in the car. Sound performance. From the examples available in the above daily life, the importance of "appropriate volume" can be fully verified. Unfortunately, the average person tends to overestimate the combination of their own audio groups, thinking that the small speakers bought at such a high price, say what can also be issued a very large volume. In fact, no matter how much you spend to buy a speaker, a small speaker is a small speaker, and the volume it can emit has its limitations. Even if your speaker unit is better than normal, it only adds a little bit of volume.
Use the tenor and violin to try the volume. How do you use the speakers correctly so that they emit the correct volume without distortion? It's very simple, just listen with your ears. Here I propose two kinds of sounds to test, one is vocal and the other is the sound of a violin. Let's talk about vocals first. Vocals are the most difficult instruments to perform. They are also the biggest test of the general speaker unit, especially the tenor and soprano. Please take a tenor record to listen to (preferably Pavallo, his voice is the most devastating), can only turn the volume to the tenor and sing it to a strong place, it sounds not "difficult" "The place is up." If you start to feel uncomfortable, it will already exceed the load of the speaker. How loud is the volume of the line that makes the speaker unpleasant? I don't know, some speakers can sing loudly, while others can only sing a little. At the end of the day, you may suddenly find out how my speakers can only sing so whispered? It’s hard to hear louder. Don't doubt that the speaker unit is not superhuman, it can't drive without distortion without distortion. How bad is the distortion of the speaker unit when it exceeds the load? If it is not an engineer, we may not know it because the speaker's narrative never lists the speaker's distortion number. It is because the distortion is very low, so even if the distortion number is listed, everyone will not pay attention to it. After the vocal test, come back and try with the violin. You don't have to use a concerto. Just use a violin sonata. Only a violin and a piano can be heard clearly. It should be noted that when the sound of the violin starts to be tight, scratched, and sharp, there is a limit. At this time, the volume should be lowered a little until the violin sound does not sound tight, and the sweet piano sound can Until it appears, there is the most appropriate volume.
To have a huge volume, you must have a large unit group. Maybe you will be disappointed when you adjust the volume according to the essentials, because the small volume does not satisfy your hearing. Yes, the reality is very cruel, otherwise why there are multi-unit four-piece large speakers, large-caliber units. Speaker design engineers know the limits of the speaker unit, so in order to present a large volume without distortion, they must use dozens of small units or a small number of large-diameter units, so that each unit emits only the most appropriate volume. . Think about it, the easy and natural sound of dozens of undistorted units, which is a high-pitched speaker with a mid-woofer unit! But then again, the overall sound of the big speaker should be able to perform. Come out, you need to listen to it at a proper volume in a large listening room, and we are in a cosmopolitan city. The average living room is mostly seven or eight pings. It is better to put a pair of bookshelf speakers, because the sound of small speakers is not too detailed and dynamic, the volume is too loud and it is too noisy to neighbors, so we can only rethink how to make bookshelf The horn makes the best sound. Therefore, no matter what speaker you use, know the limit of your own speaker, and control its volume to the most appropriate situation, this is the biggest secret to make your sound sound not difficult to hear. Have you noticed that listening to the sound in the middle of the night is particularly good? In addition to the possible reasons for the sufficient power supply, the reduction of the external noise makes the volume relatively small (already enough) is probably one of the important factors.
Listening to the space does not load too much volume. Listening to the space is not a speaker or an amplifier. How can there be a load problem? Of course! It is also a problem that most people can easily ignore. In fact, the volume load of the listening space is the sound reflection load of the six walls in the space. In North America, most of the rooms are separated by planks and plasterboard, and there is a sandwich between the panels. This is a standard soft-tuning space. A space like this can absorb a lot of sound energy, that is to say, its sound load is large. Whether in the high, medium or low frequency range, such space can be absorbed. In contrast, Taiwan's listening space is a six-walled wall of brick or cement grout. The sound energy absorbed by such a hard wall can't be compared with soft-toned space. One is absorption, the other is mostly reflection; the absorption of soft-tuning space may sometimes make the low-frequency sense insufficient, but most of them can make the high-frequency sound good; while the low-frequency of the hard-tuned space will not escape (and will increase) But it is also very easy because the high frequency reflection is too strong and harsh. Weighing the gains and losses, I tend to have soft-tuning space for the audio fans, because such a space is relatively burdensome on the volume, and it will not make you feel loud and noisy.
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Slide Switches
The Slide Switches is used to switch the circuit by turning the switch handle to turn the circuit on or off. It is different from our other serious switches, for example, Metal Switches, Automotive Switches, LED light Switches, Push Button Switches, Micro Switches, The commonly used varieties of Miniature Slide Switches are single pole double position, single pole three position, double pole double position and bipolar three position. It is generally used for low voltage circuits, featuring flexible slider action, stable and reliable performance. Mainly used in a wide range of instruments, fax machines, audio equipment, medical equipment, beauty equipment, and other electronic products.
The Mini Slide Switches are divided into: low-current slide switches (right), and high-current slide switches (left). Small current slide switches are commonly used in electronic toys, digital communications. High current is generally used in electrical appliances, machinery, etc.
It can divided into 4 types modals, respectively are:
1. High-current sealed switch
Its rated current is as high as 5A, and it is sealed with epoxy resin. It is a large current sealed switch. It has a variety of terminal forms, contact materials are silver, gold, switching functions. Therefore, there are many types of subdivisions. Widely used in electrical appliances and machinery
2. Single sided snap-on surface mount type slide switch
The actuator is operated on the side and the pins are patch-type, so it is a unilateral spring-back surface mount type slide switch. Widely used in communications, digital audio and video
3.4P3T in-line slide switch
The contact form is 4P3T and the pin is in-line. It is 4P3T in-line slide switch. 4P3T determines that it has 8 pairs of pins. At the same time, there are two pairs of brackets that support, fix, and ground. Widely used in building automation, electronic products
4.Long actuator jacking type slide switch
Actuator 12mm, and located at the top of the switch, it is a long actuator jacking type slide switch. Widely used in digital audio and video, various instruments / instrumentation equipment
Slide Switches,Micro Slide Switch,2 Position Slide Switch,Momentary Slide Switch
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