SPEAKER GIVING APPROXIMATELY EVEN DRIVING FORCE TO ENTIRE SURFACE OF PLANE DIAPHRAGM

摘要

PURPOSE:To give an approximately even driving force to the entire surface of a plane diaphragm, realize an extremely small distorsion, by forming a magnetic circuit in a m-row/n-column matrix and vertically to the diaphragm. CONSTITUTION:A magnetic circuit is formed with 16 units of magnets and voice coils respectively on a plane diaphragm 4 in a 4-row/4-column matrix. For the magnets on a certain row, N and S are alternately put into the voice coils. The wiring directions of the voice coils are set so that the forces acting on all voice coils have the same direction. Each voice coil is driven in parallel and can give approximately even force to the diaphragm 4.