【 Weak current college 】 teaches you how to buy headphones---Power By 【 China power house network 】

Headphones type
Headset according to the transducer style category, mainly in the circle of the way, such as electrostatic and magnet. Structural separation approach, half-open and closed. From wear formal you correspond, guaershi and fillet gas.
2. open and closed headphones difference
Open headphones shell is open, the open headphones the sound quality of light, natural, no pressure. Because it is open, the sound leakage, the ambient noise will also be entered.
Half-open headphones refers to the opening of the headset was selective, that is, only for certain frequency opening on other frequency is closed, or in a certain direction is open in the other direction is closed.
Closed headphones shell is sealed to prevent outside noise, sound leakage reduction in professional use in monitoring. Sound in General is very clear, detail-rich, low-frequency response is very good, for most people to wear closed headphones are confined only.
3. What is a high-fidelity earphones?
International Electrotechnical Commission IEC581-10 standard Hi-Fi headphones are the main performance: frequency of not less than the 50Hz to xiangyin 12500Hz; typical frequency response tolerance ± 3dB; frequency response curve slope not exceeding no octaves around within the 250Hz-800Hz 9dB unit in the same octaves bandwidth within the average sound pressure level difference of no more than 2dB, 100Hz-5000Hz range, sound pressure level for 94dB, harmonic distortion of less than 1%, not more than 100dB 3%; headphone frequency response in 2KHz-5KHz decline between allows to improve the transparency and sense of space.
4. What is the frequency response range of headphones?
Frequency response range refers to the headphones to the air out of band width, excellent headphones frequency response width up to 5Hz-40000Hz, ear hearing range only 20Hz-20000Hz. It is worth noting that the definition of the standard width of the frequency response is different, for example to below average output amplitude of 1/2 for standard or less than 1/4 as a standard, this clearly is not the same. General producer is an output is reduced by 1/2 standard width measured frequency response, that is to say to-3dB as standard, as used by the test standards are different, there are some product-10dB to measurement. This fact is equal to the lower than normal 1/16 to standard measurements. Therefore the width of the frequency response is great expansion. Users in the purchase, you should be aware of the different brands of earphone frequency response width may potentially unused test standards.
5. What is impedance headphones?
Headphone impedance is short for its AC impedance, and its size is coil DC impedance in more than 200 Ω to have professional headphones Jack on the match. In a desktop or amplifier, VCD, DVD TV headphone jack output machines, the general use of the high-impedance headphones comparisons. If you use a headset, a low resistance to put down and then plug in the headphones, then a put down, preventing Burnout headphones headset overload or dislocation caused by broken voice coil deformation, impedance headphones generally easier to promote, Walkman, portable, saving machine should select low-impedance headphones, while also noting sensitivity to high, the Walkman, the sensitivity indicator is more important.
6. What is the headset of harmonic distortion?
Harmonic distortion is a distortion, in the headset indicator is marked, the smaller the distortion, the better the sound quality.
7. What is the sensitivity of the headphones?
Popular speakers, headphones sensitivity refers to the same loudness of circumstances, require input power, sensitivity the desired input power. For walkman, and other portable devices, the sensitivity is a very important indicator. Of course, for desktops, this index is relatively less important.
8, wire for headphones sound effects.
Wire rod for headphones sound effects is an indisputable fact. The HI-FI system, different signal lines, speakers will obviously change the sound of the headphones of course is no exception, in recent years abroad introduced several wire to wire transfer HD580 and 600 provides conditions, famous wire such as Sweden and the United States of Clou Kada, etc.
9. in what circumstances to give headset with amplifier?
To the ear with amplifier has the following three conditions, namely the audio sources such as CD/DVD player does not have a dedicated headphone output jack, now you can with a headphone amplifier, CD/DVD player's audio line out (LINEOUT) with two signal lines received power amplifier of audio input jack. In the second case, a low sensitivity, high-impedance headphones, using existing sources such as Walkman it stops, you have to purchase the headphone amplifier. In three cases is high-end headphones, using existing headphone jack in introducing such headset can't play out headphones increase the potential of a headphone amplifier can make sound quality further improved, in this case, we should consider purchasing a high quality headphone amplifier.
10, electron tube headphone amplifier cargo transistor headset amplifier the how to buy?
The current market of tube headphone amplifier using yin-level output for last stage amplifier, this type of circuit structure is very reasonable. Therefore been adopted by most manufacturers. But this circuit output impedance is high, only with 200, 300 and Europe over headphones, and the lower the impedance, the higher the distortion.
Transistor headphone amplifier circuits late-adopting OTL, impedance requirements not strictly, and the lower the impedance, the greater the power output current. Therefore the transistor amplifier of high, medium, low resistance-eat, but to low-impedance headphones to push.
11, headphones sound characteristics
All meals may be better than more familiar to the headset, then we eat. Spicy spicy, fresh flavor, Guangdong, Shanxi people Hi acid. These three taste what you're going to get better? this fear that different people have different view. Features of the headset. European headphones as Bayard, Sen Hai Bessel, AKG, broadly similar, real tone comparisons, clear, clear danrushui. United States headphones as Gaussian, Alice, Goethe,People feel the sound is passionate, humanity and energetic. Japan headset features a CBD aesthetics, beauty of the human voice, sound warm, high-frequency extension of good, sound has been described as being alike LS/35a what music you like, what kind of headphones, you are young or middle-aged people, is what personality, tastes, you decide, from sound characteristics on the above three types only features, there is no distinction between good and bad.