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Aurvana air is the most innovative earplugs, released on September 9, 2009. It is clear that innovation hopes to hold a long-lasting celebration. Aurvana air has not lost its mission and won the 2009 German Red Dot Award.
The earphones are ear-hook and the earhooks are made of Nitinol. This alloy is also called memory metal. What is memory metal? This material is made of metal and can be violent. The curvature, at a certain temperature, will return to its original shape, we will do a small experiment here.
First, the ear-hanging violence is deformed. At normal temperature, it will not recover immediately like ordinary metal. Nickel-titanium alloy is excellent in elasticity and then baked with a candle, and the ear hooks are slowly restored. It is not easy to make it like this...
Then roast with a candle and slowly recover the earloop.
From the final recovery results, it is ideal, but it is not 100% recovery, and the degree of recovery is about 90%. In addition, when we do this test, we should not use candles because we forget that there is another metal earhook. Layer coating, this coating is not resistant to high temperatures.
Aurvana air has an inert coating on the surface. Why do you need such a coating? Because some people are allergic to nickel metal, we checked the relevant information, which is about 7%, so this coating is meaningful for 7% of people. If in some extreme applications, let the ear hooks deform, how to make it recover? Nitinol memory temperature is not high, we recommend using a hair dryer to help restore.
There are very few nickel-titanium alloys in the earphones, but the high-end glasses frames are used more, because the other significant advantage of Nitinol is that it is very lightweight. The net weight of this earphone is only 16g. This is not a common value. If you are interested, you may want to check the information of other headphones. There is a joint between the earhook and the ear shell, which is convenient to wear. After wearing, you can adjust the folding angle and let the ear stick stick to the back of the ear. When adjusting, The damping is very good. The ear-hook type, 16g, not only brings the shape and the value of the pendulum, but the first-class wearing comfort, it can be very close to the ear canal without forming a sense of pressure, nor will it form Pull down the pull. This earhook design, the innovation is called EaseFit.
The benefits of the ear-hook type are that it is not easy to fall off after wearing. It is very suitable for use in sports. In addition, the nickel-titanium alloy is chemically stable, it is not easy to oxidize, and the sweat generated during exercise does not directly corrode the metal. However, it still needs attention. It is necessary to prevent sweat from seeping into the inside of the ear shell, so it is still not suitable for wearing headphones when strenuous exercise.
In some details, this earphone also has a very good design. Below the line knot, there is a gray part, this thing is called the wire harness, the wire tie is not fixed on the line knot, its role is to tie Wires, lest the wires spread out. This thing is not worth much, but it is not seen on most headphones.
Regarding the acoustic part of this earphone, the official information is not rich, and we can write less. This earphone is not closed, but open type. Due to the metal texture, it is located below the outer side of the ear shell. The pressure hole does not look obvious. This hole is groove-shaped, the corresponding degree is about 70 degrees. The diameter of the driver is 15.5 mm, and the magnet is neodymium iron boron. The advantage of this magnet is that the magnetic density is high and it is ferrite 7 -14 times, but this is not worth a big book. In the earphone design, this magnet has become a mainstream application.
The frequency response range of this earphone is 20-20kHz. This parameter has no reference. The impedance is 32 ohms and the sensitivity is 102dB. This is an easy-to-drive earphone. It turns out that it is the same whether it is a sound card or a Walkman. There will be a phenomenon of pushing. We have prepared the following equipment as the test source: rhythm tank serenade sound card, music state Monitor 02 US sound card, Apple iPod Touch, iPod Nano, etc. Aurvana air is amazing, it does not need to be too For a long time, but after using it for dozens of hours, its sound will be more fluid.
High-frequency performance: high-frequency extension, excellent resolution, can hear the noise floor of some audio equipment, need a good sound source, iPod can not fully play the high-frequency strength of this headset. Light and thorough feeling, this is the "air feeling" described by some enthusiasts. The transient is faster, the performance of the plucked instrument has a sharp and rapid feeling, but the momentum is not aggressive, and the high resolution does not sacrifice the hearing tolerance. For the sake of cost, Aurvana air will not cause fatigue if used for a long time, unless there is a problem with the sound source.
IF performance: The mid-range performance of this headset is very standard, introverted and calm, clear mouth, not unassuming, showing all kinds of vocals, especially female voice, can reflect an elegant and graceful style, this style is very popular The IF part is not deliberately highlighted, but it still looks very full, high density, and the image is very clear. It is smooth and natural when playing the musical instruments. The resolution is very good.
Low frequency performance: The low frequency of this earphone is not the type with a very strong sense of volume. The low frequency is moderate and flexible. If you do not add a sponge earmuff, there may be a slight leak, causing a drop in the low frequency. After installing the earmuffs. The low frequency becomes full, but there may be a problem that the earmuffs wrap the pressure relief holes, causing the low frequency to become turbid. This is very important. When installing the earmuffs, special care should be taken to avoid covering the pressure relief holes. .
Aurvana air's sound field is also very commendable. It has no depressing cranial effect. The sound field is relatively wide. It doesn't sound like a small earplug. It has some styles of big headphones. Although we said a big one. Aurvana air is good, but it is not without its shortcomings. For the bursting of dance music and rock, Aurvana air is very difficult and will feel chaotic. Aurvana air is not a versatile headset, suitable for small and medium-sized music.