Since its invention by Alexander Graham Bell in the second half of the nineteenth century, the headphones have undergone many changes and firmly entered the life of not only music lovers can not live without music, but all the fans to listen to the radio on the way to work or to "read"new audiobook without interfering home.With the advent of virtually every home PC headphones and did become an indispensable attribute of every family.But everyone knows how to select the headset and on some aspects of this accessory with the purchase should pay attention to?
The first thing to look for when choosing headphones, this frequency range.It should be borne in mind that the principle of "the more, the better" in this case does not always work.So how to choose headphones with the "right" frequency range?To begin, it is important to know that the human ear can perceive frequencies from 20 Hz to 20 kHz.The beginning of this segment is responsible for the "bass", and at the top are high-pitched sounds.For good headphones is important, not the width of the frequency range, and the correct reproduction of frequencies in this range, without obstructions, "mumbling" or wheezing in the lower frequencies without hiss or rattle in the top and middle frequencies.As a rule, all manufacturers specify the basic technical characteristics of its product, including the amplitude-frequency indicators on the packaging or in the accompanying instructions.
second important characteristic when choosing headphones serves as resistance.In fact, the more an accessory, this characteristic, the more powerful device must be so headphones for optimum performance, and much less influence on the sound of this source has.Simply put, a low-quality player you can connect headphones with an impedance of 8-16 ohms, but to fully enjoy the music will not work - this will distract the crackle of internal processes, amplifier noise and other extraneous sounds.If you connect the player to such a large "monitor" headphones with an impedance of 250 ohm sound in them will be very quiet and flat - the headphones will not play, and will "whisper".The optimum resistance range for portable devices - is 32-64 ohms.This knowledge will tell you how to choose headphones to the player, "right."
Another important factor that significantly affects the sound, is the sensitivity.The more this characteristic, the louder the sound.Accordingly, the lower the sensitivity and resistance, the quieter these headphones will play the sound.
Many buyers before buying this accessory thinking what to choose - Vacuum headphones or "normal".In this regard, it is best to focus on their own feelings during the trial and listen to the convenience factor.Also, be aware that even when muted in the world of vacuum headphones "suppressed" rather strongly, so with such a device, it is advisable to cross the road very carefully and generally be more focused on the street.
and the last part of the question of how to choose headphones, acoustic design is the upcoming purchase.In this regard, the headphones are "open", "closed" and "semi-open".In addition to the appearance of the acoustic design affects the sound insulation - in the "closed" headphones outside world will be as "muted" music and others do not hear what's playing in your headphones even when playing at a very high volume.But in the "closed" headphones there is one drawback - no sound comes out of the back wall of dull speakers, and may be slightly distorted.
One of the most popular manufacturers of headphones at the moment are such companies as «Koss», «Sennheiser», «Sony», «AKG» and «Philips», but there are a number of other manufacturers, providing market headphone quality and noteworthy item.
