Horn factory is a material assembly enterprise, so the key of development is the choice of raw materials. The quality of raw materials determines the quality of products to a large extent, and directly determines the cost of products. Because this product develops design is the key link that decides product product and enterprise economic benefit, moving coil type conical outside magnetic loudspeaker main material includes: bracket, iron sheet, iron core, magnet (after magnet), after shell, drum paper, gasket (back gasket), elastic wave, voice coil, dustproof cover, terminal, brocade silk line and so on more than 10 kinds.

Understand deeper to these materials, more helpful to development, want to be able to develop the loudspeaker with low cost, good performance, convenient operation, besides need very strong development experience and rigorous working attitude outside, still must work hard in raw materials, will do knowledge to afore-mentioned raw materials in turn below.