| abstract |
The present invention discloses a speaker, the speaker diaphragm comprising a vibration system and a magnetic circuit system mutually cooperating with the vibration system, the vibration system comprising a speaker diaphragm, the speaker diaphragm comprising two surface layers combined and Comprising at least one intermediate layer located between two surface layers, at least one of the surface layers being a thermoplastic polyester elastomer film layer (11), at least one intermediate layer being an adhesive layer (12), the Young's modulus of the speaker diaphragm Is 5-700MPa, the amplitude when the speaker diaphragm vibrates is 0.25mm-lmm, and F 0 of the speaker is 150-1500Hz. This speaker has a good sound effect. |