Patent ID: 8144898

Claim:
A method for assembling an electret microphone comprising: providing a housing; inserting a diaphragm assembly into the housing; inserting an insulating spacer into the housing; inserting a backplate assembly into the housing, the backplate assembly having a disk shape; coupling the backplate assembly to a body assembly, the body assembly comprising a conductive mount disposed in a hollow plastic molding, whereby an acoustic passage is formed between an edge of the backplate assembly and a surface of the hollow plastic molding; coupling a circuit board to the conductive mount and the housing, thereby forming an electrical circuit between a first contact on the circuit board, the conductive mount, a capacitor formed by the diaphragm assembly and the backplate assembly, the housing, and a second contact on the circuit board; disposing an end of the conductive mount relative an end of the body assembly equal to a thickness of the backplate assembly, whereby a side of the backplate facing the diaphragm is level with the top end of the body assembly.