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- Time: 2023/11/20 Posted: Shenzhen Kamchak Manufacturing Technology Co., Ltd.
- Earphones with different impedances are mainly used for different occasions. On desktop computers, amplifiers, VCDs, DVDs, televisions, and other devices, high impedance headphones are commonly used. Some professional headphones have an impedance of even more than 200 ohms, which is to match the headphone jack on professional computers. If using low impedance headphones, it is necessary to first turn down the volume and then plug in the headphones, and then gradually turn up the volume, Prevent earphones from being overloaded and causing them to burn out or the voice coil to deform and misplace, resulting in broken sound.
Impedance does not refer to the resistance of the earphone itself! After impedance matching, the power allocated to the earphones can be increased, and the smaller the self resistance of the earphones, the better. The smaller the self resistance, the easier it is to drive the earphones; The greater the self resistance, the less easy it is to drive. The impedance of a typical walkman earphone is between 16 Ω and 64 Ω.
Generally, the impedance of headphones is the smallest at low frequencies, and the attenuation at low frequencies is smaller than at high frequencies. For most earphones, increasing the output impedance will make the sound darker and more mixed (at this point, the control of the earphone driver unit by the power amplifier earplugs will also become weaker), but some earphones need to listen better at high impedance. The sound of headphones with too much impedance can sound a bit mixed, and for various portable walkmans, such as CDs, MD, or MP3s, low impedance headphones (usually less than 50 ohms) are generally used because these low impedance headphones are easier to drive, and attention should be paid to high sensitivity. For walkmans, MP3, MP4, and CDs, sensitivity indicators are more important. Of course, within a certain limit, headphones with higher impedance have better sound effects when paired with a higher output power sound source.
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