Patent ID: 6219431
Filing Date: 2001-04-17
Classification: H04R

Abstract:
A loudspeaker, comprising:a motor including a top plate having an upper surface, and a movable voice coil;a frame having an upper end, and a lower end carried by said top plate;a surround connected to said first end of said frame, and a diaphragm connected between said surround and said voice coil;a lower suspension connected at one end to said voice coil, and at the other end to said frame at a location between said upper and lower ends of said frame, a cavity being formed in the area between said lower suspension and said lower end of said frame;cooling structure associated with at least one of said top plate and said frame, said cooling structure including a number of stand-offs located between said upper surface of said top plate and said lower end of said frame, said stand-offs forming a flow path between said upper surface of said top plate and said lower end of said frame along which a flow of air is directed in and out of said cavity and in thermal communication with at least said top plate of said motor, in response to movement of said voice coil.