Patent ID: 8031902

Claim:
A loudspeaker comprising: a diaphragm having a vertically long flat plate shape; an edge operable to support the diaphragm in such a manner that enables vibration thereof; at least one voice coil directly or indirectly connected to the diaphragm; and a magnetic circuit operable to drive the at least one voice coil, wherein, the magnetic circuit has a vertically long shape and is located such that a longitudinal direction thereof coincides with the longitudinal direction of the diaphragm, the at least one voice coil is of a vertically long shape, a length of long sides thereof is no less than 60% of a length of a longitudinal direction of the diaphragm, and the long sides thereof are connected to the diaphragm so as to be parallel to the longitudinal direction of the diaphragm, whereby a plurality of resonance modes in the longitudinal direction of the diaphragm are suppressed, and with respect to a short axis direction of the diaphragm, positions where the long sides of the at least one voice coil are connected to the diaphragm are set as positions of nodes of a primary resonance mode in the short axis direction of the diaphragm, whereby a resonance mode in the short axis direction of the diaphragm is suppressed.