Patent ID: 7940950

Claim:
An electromagnetically-shielded speaker system capable of generating audible sounds based on electric source signals supplied thereto while minimizing irradiation of undesirable electromagnetic waves to an user comprising: a case member which is configured to define at least one opening therethrough; a drive member which is configured to be disposed in said case member and to include at least one cone, at least one voice coil, and at least one magnet, wherein said magnet is configured to form a static magnetic field therearound, wherein said voice coil is configured to be fixedly coupled to said cone, to receive said signals, and to form a dynamic magnetic field therearound as said signals flow therein while irradiating said undesirable waves, and wherein said cone is configured to vibrate due to interactions between said magnetic fields while generating said sounds; and a counter member which is configured to be coupled to at least one of said case member and drive member in a preset relation to at least one of said voice coil and magnet and to irradiate counter electromagnetic waves capable of canceling at least a substantial portion of said undesirable waves due to said preset relation, thereby minimizing said irradiation without affecting said sounds, wherein said counter member is configured to define a shape which is configured to not conform to at least one of said voice coil and magnet but to generate said counter waves capable of canceling said portion of said undesirable waves according to said preset relation.