How to understand the speaker circuit?

Whether you want to learn to paint as an engineer or study as a technician. There is a difference between wanting to be an electronic device (including a speaker). To draw pictures, you have to learn drawing software, usually CAD or CAXA, and it takes one or two months to learn the software. If you know a lot about graphics, you have to learn electrical symbols and text symbols. You have to have practical experience to participate. I suggest you refer to: electrical data health network, which contains engineering legend symbols, text symbols and electronic symbol atlas, as well as various motor control circuit diagrams, plc and single chip microcomputer schematic diagrams. There are also various audio, electronic production, lathe circuit diagrams. I hope it helps you. It is necessary to draw and read pictures.