Patent ID: 8098878

Claim:
A miniature electro-acoustic transducer comprising a voice coil attached to a diaphragm, and a magnet assembly comprising an air gap, said voice coil comprising: a first voice coil portion at least partly positioned in the air gap of the magnet assembly, said first voice coil portion having its primary extension in a direction substantially parallel to a direction of movement of the diaphragm of the miniature transducer; a second voice coil portion attached to the diaphragm of the miniature transducer, said second voice coil portion being positioned outside of the air gap of the magnet assembly of the miniature transducer; and wherein the second voice coil portion, in a direction substantially perpendicular to the primary extension direction of the first voice coil portion, has a thickness being 2-5 times larger than a thickness of the first voice coil portion.