As a subsidiary of the American company Victor phonograph in Japan, JVC has been called "victory" by the Chinese in the early years, has a high reputation in the field of audio equipment, and is one of the best music post-production companies in the world. In the field of records, it is also famous in the world. As a branch of JVC, JVC headphones have a unique Japanese taste, and have a number of patented diaphragm technology, which is rare in the headset industry, and won various awards in Japan, so JVC has been the technology in the headset industry. innovator.
Today's headset is JVC's flagship dynamic earphone product "HA-FX800", which has attracted much attention as a replacement for the FX700, using a wooden and metal casing, and using JVC's exclusive wood diaphragm technology. It can be said that the application of "wood" in earplugs has reached the extreme of the current stage.
JVC's FX800 headphones are the most interesting. In addition to sound, the use of wood materials is estimated to be the most concerned. Many people will doubt the "wood diaphragm", isn't it easy to age, it is easy to break?
Wood is a substance that is easily cracked and deformed. How can it be made into an ultra-thin diaphragm?
The first is to soften the wood. After repeated trials, JVC found that Japanese sake can be used as a softener. The amino acids and glycerol contained in Japanese sake have a moisturizing effect on wood fibers, thus solving the problem that wood is difficult to form. JVC finally selected birch as a diaphragm material, and produced a headphone diaphragm with a thickness of 0.01 mm, and finally made a thermosetting resin treatment to stabilize the shape, and while maintaining excellent sound characteristics, it has a relatively good aging resistance.
So it is estimated that many people will doubt, why does JVC have to spend so much effort to develop this wood diaphragm? Aren't other headset manufacturers using plastic?
The wood material has a natural irregular texture that effectively absorbs clutter and also has excellent acoustic response characteristics. Wood is characterized by good sound transmission (fast propagation speed) and moderate absorption (internal loss) of excess vibration. In addition, since the direction of the wood grain is different, the speed of the sound propagates at different speeds, so that the resonance that adversely affects the sound can be reduced.
The JVC HA-FX800 uses a 10mm wooden unit.
Frequency response range 6 - 26,000 Hz
Impedance 16 ohms
Interface type straight
Sensitivity 104 dB/1 mW
Maximum carrying power 200mW
Line length 1.2 meters
Weight 9.6g (not connected)
As a flagship earphone product, the FX800 does not use the popular interchangeable line design. This is a little bit regrettable, but the quality of the FX800 wire is very good, and the intended use should not be easily damaged.
Unlike conventional closed earplugs, the JVC FX800 has a large air pressure adjustment hole, which is rare in in-ear earphones, which has a great relationship with its unique diaphragm.
The JVC FX800 in-ear design features an angled ergonomic design that is more sleek to the person's ears, improving the seal and comfort of the wearer.
The sound hole of the FX800 uses a fiber-like material, which has a certain impact on the sound.
The JVC FX800 overpaid earphone set, although less than a lot of earplugs, is enough for users to pick.
The earphone cavity of the FX800 is made of wood material, which undoubtedly poses a challenge to preservation, and the metal ring at the tail is also more likely to be scratched. If you mind these, it is recommended to carry the storage bag with you. .
This earplug has been in the hands of the author for a month, the downtime is about 200 hours, in addition to the HiFiMAN HM-901 in the picture, there is AK100.
The FX800 just opened is somewhat unsatisfactory in the control of low frequency, boring and banging, high frequency teeth are also more, the connection of tri-band is not very smooth, the overall sound is "tight" (strict requirements for flagship earplugs) So the author decisively started the downtime. In about 50 hours, the big change is the low frequency, although there are still some heads, but the feeling of dullness is much less.
200 hours of listening:
Low frequency: After 200 hours, the biggest change is still the low frequency. It can obviously feel a lot of transparency and elasticity. Of course, for the guy who likes the light taste, the volume is slightly large, and the dive is also a circle. Can be ordered, rich in details.
High frequency: A long time ago, I have heard of FX700. Since I like all kinds of high frequency earplugs, I gave the FX700 a lower evaluation. Obviously, FX800 has a higher level of high frequency than FX700. The high-frequency extension is smoother, the details are equally rich, and there is a gentle texture, which is very good.
IF: In terms of the author's sense of hearing, the FX800 is a two-headed earplug. The intermediate frequency is relatively high and low frequency, and the color is lost. The thin intermediate frequency can't give you a thick voice. This is very important when listening to male voices and paying attention to the female voice of the intermediate frequency. Obviously, listening to Tsai Chin is obviously a lot younger, and the feeling of vicissitudes is much less. However, this low frequency is very suitable for listening to sweet little fresh female voices. Liang Jingru's voice is really sweet, and listening to ACG music is also more suitable.
Summary: It may be a problem with equipment matching. In the process of using FX800, the author chose more popular in Europe and America, and its good low frequency is very good for the rendering of music atmosphere.
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