Loudspeaker e.g. 4 channel co-axial loudspeaker, for e.g. professional listening system in studio, has diaphragm disposed inside spherical surface that is designed such that perimeter of another diaphragm is spherical surface generator

摘要

The loudspeaker has convex and concave diaphragms (362, 621) that are disposed in a coaxial manner. The convex diaphragm (362) is disposed at the front of the concave diaphragm (621) with respect to useful sound wave propagation direction. The diaphragm (621) is disposed inside a spherical surface, where the spherical surface is designed such that the perimeter of the diaphragm (362) is a spherical surface generator. The diaphragm (362) has an annular shape and comprises a diaphragm (363). Diaphragms (361, 362) are disposed in a block of a sound production assembly (64).