Voice coil material -Black aluminum of aluminum(BASV)

Advantages of black aluminum in voice coils: Black has heat absorption and absorption capacity. Black also has the advantage of fast heat dissipation, because black absorbs a large amount of heat, so when it absorbs too much heat, it will dissipate heat, allowing it to absorb more heat. Anodic oxidation treatment of black aluminum improves the hardness of the material itself, and the anodic oxidation treatment makes the material play a protective role as an insulating layer.Thereby avoiding the occurrence of voice coil short circuits during horn vibration.