What are the types of loudspeaker materials?

There are several types of paper cones, such as glued paper cones, paper-based wool cones, and compacted cones. Paper cones have the advantages of natural sound, low cost, good rigidity, light material and high sensitivity. Consistency is hard to control.

    Bulletproof cloth, with wider frequency response and lower distortion, is the choice for those who love strong bass. The disadvantages are high cost, complicated production process, low sensitivity and unsatisfactory light music effect. The wool woven basin is soft in texture. It is very good for soft music and light music, but the bass effect is not good, and it lacks strength and shock. Polypropylene cones have the characteristics of good consistency and low distortion, and are currently widely used in high-end car speakers.

    In addition, some high-end car speakers also use new materials such as PPTA diaphragm and polyetherimide mid-range cone. The performance of PPTA diaphragm is similar to that of metal materials, but it does not have the sharp and harsh sound that often occurs in metal materials, so that the speaker can have delicate and vivid sound characteristics.

    Polyetherimide mid-range cone (PEI) is a mixture of ether and polyimide. It is used as a mid-range and high-range cone material with superior physical properties. PEI produces clear sound with high rigidity, durability, and high resistance to heat, chemicals, and wind and rain.