Loudspeaker membrane has vibration coil connected to part of it, which has number of tongues fixed to other part of membrane

摘要

The loudspeaker membrane has a vibration coil (1) connected to it, which has a number of tongues (2) fixed (3) to the other part of the membrane. A preferred form comprises a metal membrane with a star-shaped inner part with five tongues in a plastic material such as polypropylene.