For those who like audio and headphones, play HI-FI, especially those who are interested in headphones and have a fever, will soon hear the word "downtime". Frequently, a friend who bought a new earphone or speaker will ask, "Do I need to pick up this headset? What do you use? Help me recommend some music." So what exactly is the headset?
What is the opportunity? In the end, do you have to use the machine?
The downtime, the English name Burn-in, means that the newly purchased audio equipment will be powered on for a period of time before the sound quality of the playback will be better. We all know that some electronic components such as transistors, integrated circuits, and capacitors are unstable when the electrical parameters are new, and they will gradually stabilize after a period of use. Therefore, the internal components of a new audio or earphone are relatively new. When it is used, it does not reach an optimal state, so it must not be mature enough in terms of sound performance. The process of downtime is to artificially speed up the aging of equipment to achieve a stable state. For the earphone, the actual machine is in the ç…² diaphragm folding ring, the new earphone diaphragm folding ring mechanically poor, resulting in greater distortion, after a period of use, the gradual gradually become better, the distortion will gradually drop to normal s level.
The diaphragm and voice coil of the earphone are made of highly compliant material, and the internal structure is not so stable at the initial stage of the qualitative, so the compliantness is relatively small, which is relatively blunt. Only after a long period of exercise, the distance between the molecules is extended, and the distribution is more uniform and the compliantness can be increased. The new earphone products are less versatile due to the mechanical refractory of the diaphragm, so the distortion will be larger. It is the under-potential of the bass, the volume is small, the sound is loud, the IF is not soft enough, the treble is rough and sharp.
After a period of use, the graduality will gradually become better, the distortion will gradually decrease to a reasonable level, and all aspects of the sound will reach a more comfortable level, which is much looser. So in theory, ç…² headphones are still very necessary, ç…² headphones can really make the sound more stable and mature to reach a level that it should normally play. It's not hard to understand why many people ask questions about headsets after buying headphones.
Scientifically
The following are the most widely circulated methods that are also accepted:
1. Drive the headphones for 12 hours with a volume of one-third of the normal volume level (better with a 100-1500Hz/5s sweep signal) 2. Drive the headphones for 12 hours with a two-thirds of the normal listening intensity ( Better with a sweep signal of 50-1800Hz/3s)
3. Use the normal listening intensity to drive the headphones for 72 hours (better with 20-2000Hz/2s sweep signal)
4. Use the volume of four-thirds of the normal listening intensity to drive the headphones for 24 hours (better with the 18-2200Hz/1s sweep signal)
5. Enter the normal use stage
Use high quality music for downtime
Many friends will ask what kind of music the headphones use. Of course, the choice of music may be more noteworthy, but it does not say that it is necessary to stipulate what kind of music to use. At the beginning, we should try to choose some softer and more soothing music, avoid using big dynamic music to stimulate new headphones, and rock and dance music is still too exciting. In modern electronic music, the bass component is too strong, and some headphones with high sensitivity may cause physical damage caused by overload. Of course, we don't specifically recommend the music that should be used for everyone.
In addition, it is very noteworthy that although there is no strict limit to the music of the downtime, MP3 is definitely not acceptable, because the music has already reduced the part of the treble and bass in the process of compressing into the MP3 format, and the original intention of the downtime is Let the performance of these high and low sounds come out, so using MP3 music to take the opportunity can only be a waste of effort. If you use a music player, it is best to choose a CD record or a lossless music format such as APE or FLAC.
New headphones, many people find that headphones need to be better for some time. But you can't use high volume, big dynamics or electronic music records. In fact, the running-in of the earphones and the car is a truth. Slowly running in will make the mechanical part (the vibrating part is equivalent to the mechanical part) get the best fit. . Therefore, our headphones can't be bought and kept waiting for them to complete the relegation. The downtime of each headset should not be too long. After working for a while, you need to let the headphones rest and continue. Because there is resistance in the sound source, it will heat up after working for a long time, and it will burn out the voice coil if it is serious.
Generally, the first week of buying new ones is the time of downtime. The sound of headphones has been played 95% in one month. It takes 6 months (average 2 hours per day) to be the best state of the headset. Another point worth emphasizing is that not all headphones will get excellent sounds, because it is also closely related to the quality of the headphones themselves. Some headphones will change their sound after the smashing, but some headphones will not be too prominent after the smashing, which is also the normal stage.
Downtime is a must, but not deliberate. The downtime is to make the equipment enter the normal state more quickly, so the downtime can also be performed during normal listening. The downtime is a way to speed up the performance of the earphones and make them perform at their best. It really has some scientific basis, and it also exists in some methods of hearing headphones. However, it should be noted that it is not necessarily possible to greatly improve the sound quality of the headphones. If you hold this view, it may be a little disappointing in the end. Therefore, we still have to rationally treat the downtime process. If it is not too anxious, then we can listen normally. Of course, it is not a bad idea to use some downtime methods. More home theater knowledge is available in China Home Theater Network, official WeChat public platform: cnhifi, so stay tuned.
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