Earphone Earbuds Stereo Handsfree

Earphone Earbuds Stereo Handsfree 

What materials are needed for the production process of the headset?
What is the difference between a good headset and a bad one?

  Whether the headset is good or not, there is a very important parameter that is impedance. The lower the impedance, the easier it is to drive. Therefore, the previous walkman, MP3, etc. should choose low impedance headphones. However, headphones with higher impedance have better sound effects when paired with a sound source with higher output power.
   In the circuit design, it is generally necessary to ensure that the power amplifier is in the MUTE state when the earphone is inserted. If it is an amplifier without MUTE, disconnect the speaker when inserting the earphone. Similar to the handsfree earphone, it is a PC audio input. This circuit design must ensure that the power amplifier input is connected to AUDIO When IN, the AUDIO signal is transmitted; when the signal is not connected, it is connected to the ground.
   The voice coil of the earphone is an inductive coil, which is an inductive load. The output voltage of a good earphone within its rated load range is relatively constant.

   The loud sound of the earphone shows what the problem is. For a specific impedance load, the output sound quality and volume are almost meaningless, because any amplifier circuit has a linear operating point. After this point, the circuit still has amplification. The effect is nothing more than nonlinear amplification. A good earphone should have a wide linear range and good impedance matching, otherwise the sound will be distorted.

Model：M-12

Bluetooth 5.0 

Product color : Photo Color

Music time:6-7 hours

Intelligent noise reduction 

Summon Siri

Mini portable

Long battery life