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Discussion on the effect of different magnets on the sound quality of horn (headset)
Gauss Industrial Co.,Ltd | Updated: Nov 03, 2018


   Alloy magnets: also known as magnetic, aluminum nickel and cobalt from aluminum, nickel, cobalt, iron, and magnetic materials 600 ℃ in casting and sintering. Alnico is more expensive than ferric oxide and cobalt is a scarce material. Alnico magnetic is the earliest magnetic material used in loudspeakers, such as the trumpets of the 1950s and 1960s (known as the high-pitched speaker). The inner magnetic type horn is usually made (the outer magnetic type can also be used). Disadvantages: small power, narrow frequency range, hard and brittle, inconvenient to process, requiring grinding or edm.

 

 
   Iron oxide magnetic (commonly known as: iron oxide) : by the magnetic material powder and iron powder is about 1200 ℃ sintering. General made magnetic type horn, cheaper price, the high performance price ratio. Disadvantages: larger volume, smaller power, narrower frequency range.

 

   Nd-fe-b magnets: rare materials such as nd-fe-b (rare earth) and neodymium ni-co are electroplated after being sintered at high temperatures. In the same volume of magnetic strength than the general ferric oxide magnetic strength more than 10 times. Features: with the same magnetic flux, its volume is small, power is large, and frequency range is wide. At present, HiFi headset basically USES such magnets. Disadvantages: rare earths are widely used in high-tech fields (military, electronics, etc.), but in recent years the use of rare earths has been tightly controlled by the government and prices have skyrocketed.

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