How to burn in Edifier headphones

Hello!

I specialize in selling headphones and speakers. The following is definitely typed by myself. If you copy it, you are copying it. It is absolutely original! If you care about your headphones or speakers, please read the following carefully:

What you have to do---talk about burning headphones! The same principle applies to speakers and stereos

Walkman enthusiasts often have a good pair of earplugs, but when they start using them, they find that they are not as good as others

The argument is so good, could it be that I bought a fake? No! In fact, that's because the first step after purchase - "cooking" - was not carried out.

The newly purchased headphones sound good. But compared with my friend's earplugs of the same model that I have been using for a while, they are still not satisfactory. The bass is tight and stiff, the midrange is not soft and full enough, and the treble is full of burrs. Why is this happening

? Because I haven’t reviewed this newly purchased headset yet!

So, what are praise headphones? As we all know, new cars, machines, etc., must go through a stage called "run-in" before normal use, so that the internal mechanical devices can fully coordinate and cooperate and enter the best condition in advance. Similarly, the driving unit of the earphone (the speaker inside the earphone) is also a mechanical device. To be precise, it should be a combination of semi-mechanical and semi-electrical device, mainly composed of speakers. It consists of a ring, a diaphragm, a positioning ring (a metal ring that fixes the diaphragm), etc. The mechanical part is a compliant system, including a diaphragm and a voice coil fixed on the diaphragm. Compliant components can be equivalent to capacitors in electronic components. Capacitors store electrical energy, while diaphragms and voice coils store kinetic energy. The compliance size of the headphone unit is equivalent to the parallel value of the two capacitors, the diaphragm and the voice coil, which is the key to determining the quality of the sound.

The diaphragm and voice coil are used The material is a highly compliant material. Its internal molecular structure is unstable in the early stage of shaping, so the compliance level is also unstable. When it is first used on a speaker unit, its compliance is usually relatively small (usually intuitive The understanding is still relatively blunt), because the molecular structure is relatively in a stable period. After moving for a long time, the distance between the molecules becomes farther,

the uniformity and compliance of the distribution are much greater, and the overall compliance of the speaker is also much greater. One of the most important values ??of the speaker is

The lowest resonant frequency. This value basically determines the lowest frequency that the speaker can reach. For example, the mechanical quality factor of the speaker

. The greater the compliance, the greater the mechanical loss, so the mechanical quality factor will change. Low means the sound sounds softer than

. Therefore, the new headphones generally sound like low-frequency dives that are not deep, with a small and stiff sense of volume, mid-frequency performance that is not soft enough, and high frequencies with burrs and too sharp symptoms (of course, this is It is also determined by the quality of the headset itself).

After a period of praise, the compliance (or elasticity) of the speaker unit will increase, and it will move back and forth easily, so that the sound will be full and relaxed, and the sound quality will be better. .

The speaker diaphragm is generally made of PET (except SONY's biological diaphragm). The purity of the material and the process parameters during blister

(whether the thickness is uniform , whether the stress disappears, the direction of material extension) has a great impact on its physical properties.

The sound produced by the speaker is actually a voice coil connected under the diaphragm (the metal wire wound outside the paper cone must meet a certain number of turns, and the voice coil must be very light) ) moves up and down in the magnet (material usually N38) to drive the diaphragm to vibrate and produce sound.

The optimal response of the diaphragms of different speakers to frequencies is within a range, and it is impossible to cover everything. For individual diaphragms,

high frequencies and low frequencies It is contradictory in itself.

But why do some headphones sound like they have excellent performance in high, middle and low frequencies? In fact, it cannot be solved by the diaphragm alone.

It also has a lot to do with the tuning paper and ear shells. Big relationship.

Perhaps you have all disassembled monitoring headphones and noticed that there is tuning paper attached to the back of the speaker. The function of the tuning paper has a great influence on the frequency response curve of the speaker.

The material (W3) and thickness (mostly 0.6mm) are very particular, which is why some speakers have a layer of tuning paper on the back and some speakers have two layers of tuning paper on the back.

Usually the parameters of the speakers are different when they come off the assembly line, but for the speakers to pass the BK test, the parameters (mainly the frequency response

curve) must meet the specified deviations,

Good speakers are an essential part of good headphones, but they are only part of it (if you don’t believe me, try changing the speakers). It also depends on the design of the ear shell

as well as the sound filtering and sound-absorbing materials. relation.

There are usually vents on the ear shells (vents for closed headphones are more difficult to design). The location, size, and number of the vents are all very important.

Okay. The headphone vents are covered with tuning paper instead of ordinary dustproof paper.

Similarly, the space design of the ear shell is also very particular. It is necessary to allow the diaphragm to allow the air to enter and exit in a predetermined manner during the vibration process

rather than to let the air in randomly. Random exhaust, the resolution of the headset is very closely related to the air intake/exhaust of the ear shell.

Of course, it is also inseparable from the contribution of filter paper and sound-absorbing cotton (not all headphones require sound-absorbing cotton).

For burning-in headphones, the correct burning method will improve the characteristics of the diaphragm, mainly to make the diaphragm change in the changes of high, middle and low frequencies

Eliminate the original stress and enhance the elasticity. The specific method of burning depends mainly on what kind of music the user prefers and the frequency range to which the user's ears are most sensitive. (There is a lot of noise in cities now, and many young people with hearing loss can only hear sounds below 14,000.

If you only like low frequencies, I suggest you have your ears tested and reduce the low-frequency music appropriately) The same Earphones

have different effects for different people (most ordinary listeners have a good impression of low frequencies, but it is the easiest to realize low-frequency effects when designing headphones.

, which is why really good headphones don't excel at low frequencies).

In addition to the above factors that affect headphones, the headphone cable and plug are also very important. Good headphones generally use OFC audio cables, which are wound with yellow denier, and the plugs are gold-plated instead of ordinary nickel-plated.

The finished headphones will be sampled for simulated human ear testing before leaving the factory (full inspection before mass production), so there will be individual differences

but the overall difference is not big. The design starting point of each earphone is targeted. If anyone says that a certain earphone

has a chance of being liked by everyone, then he is lying. There are many good headphones, but the one that suits you best is the best.

So, how to praise headphones? A very simple method that was popular in the past was to directly connect the radio, tune to a frequency with no radio station, and use the "hissing" sound (pink noise) emitted by the radio to make the headphones Work to

achieve the effect of praise. But it’s not obvious with this method. It’s faster to just put on headphones and listen to music.

It is also possible to use a special frequency generator to generate a certain fixed or scanning frequency and then input it into the earphones as a compliment.

The effect of this method is more obvious, and the time used It can also be shortened a lot. But most players don't have this type of equipment, so what should they do? What is the most efficient way to praise headphones? Today, with the rapid development of computers,

many enthusiasts have compiled some programs, use computers to process some waveforms and frequencies, and output them through sound cards to achieve

some real frequencies. The effect of the instrument, this is the so-called "virtual instrument".

There are many frequency test softwares like this

The one I am using now is called Test Tone Generator, which is easy to use, has specific functions, and is also small in size. Let’s talk about how to use it to praise headphones.

Praise machines generally use low frequency. So, just set the ttg to low frequency. There are two methods, one is to use fixed frequency output; the other is to use scanning frequency. The effect is almost the same. The way to test the fixed frequency is to enter a value in the FREQUENCY of the fixed frequency output

(CONSTANT TONE), usually 20 to 50, and select it

LOOP, DURATION time does not matter, use SINE (sine wave) as the waveform with a gain of 0 DB, then you can plug in the headphones on the sound card and let it work for a long time.

The scanning frequency method is to use the INITIAL FREQUENCY of the sweep frequency (SWEEP) to enter the starting frequency, and enter the end frequency of FINAL FREQUENCY.

Generally, I think it is from 20HZ to 100HZ. Appropriately, the DURATION time

is to set the time it takes to scan once, and other operations are the same as the fixed frequency. Many friends have asked me why I only praise low frequencies. In fact, you can know why from the principle of praise machine mentioned above.

If ttg is not available, use the pot tool version 1.0

There are two points to note during the praise process: First, do not work continuously for too long! Because the voice coil has resistance, it will generate heat after working for a long time, and it may even burn the voice coil! It’s best to stop for a few minutes every two hours and then continue. Second, the volume must not be too high. The earplug diaphragm is a very fragile material. If the volume is high, the movement of the voice coil will be large, which will pull the diaphragm violently. , will cause the voice coil to loosen, the diaphragm to deform or even tear, etc. Especially for "fragile" earplugs like 888

you need to be careful. When adjusting it correctly, just adjust it so that you can clearly hear the sound waves or vibrations of the air. Don't adjust it too high and hear the diaphragm vibrating violently. Protect your headphones carefully.

The last thing to emphasize is that not all headphones will sound better after testing. This depends on the quality of the headphones themselves.

Some headphones will not sound good after testing. The effect is not very obvious, which is normal. The purpose of our praise machine is to help it quickly go through the aging adjustment period and stabilize the physical properties of its components. The vibration system of headphones that have not been burned in may be tight and hard. By burning in the headphones, the vibration system can relax and the parameters become more stable.

So the sound quality It will get better. Also, don’t overthink the effect of praise. After a period of time, the effect will not be obvious if you continue to praise again and again.

The greater the hope, the greater the disappointment. To have good sound, it mainly depends on the audio source and other equipment.

Comparison of before and after sound

The author has "baked" a lot of earplugs, and the one that impressed me the most was the Sony (SONY) MDR-E888. This is a very high-end headset. The market price is around RMB 400. However, when I first bought these earplugs and listened to them

, I often had problems such as dry treble and a lot of glitches in the mid-range, which made people feel that they were not worth the 400 yuan. But once

MDR-E888 is "cooked", it will radiate dazzling light: smooth high frequency, warm but no glitch

midrange, deep Powerful bass, I can’t believe it’s the same earbuds. Personally, I think the MDR-E888 is the most in need of "baking" among the earplugs I have seen. This may have something to do with its unique bio-vibration membrane.

Other earplugs also

need to be "baked in". After "baked in", the low-frequency elasticity is enhanced and the high-frequency suppleness is improved.

But the results are good. Not as exaggerated as MDR-E888!

"Boiling" earplugs is a long process, which requires a combination of "baking" and daily reasonable use. If you can "bake" your earplugs correctly

, then, I believe she will definitely bring you a different surprise

Comes with the Edifier burn-in software download address: /sce2009/support/sup_software.php

Recommended burn-in songs:

The Fifth Element-The Diva Dance (this one is definitely OK)

fate stay night-Fate stay night

The Thinker-Memories of the Forbidden City

porunacabeza - Know a woman by smell

White giant tower - amazing grace