Patent ID: 8041068

Claim:
A loudspeaker comprising: a frame a magnetic circuit supported by the frame and for forming a magnetic gap; a voice coil arranged movable relative to the magnetic gap; a diaphragm having an outer rim connected to the frame via a diaphragm edge and an inner rim connected to the voice coil; a first combination provided closer to the magnetic circuit than the diaphragm and having a first damper and a first edge, thus having an inner rim connected to the voice coil and an outer rim connected to the frame; and a second combination provided closer to the magnetic circuit than the diaphragm and having a second damper and a second edge, thus having an inner rim connected to the voice coil and an outer rim connected to the frame, the first edge having a first edge protrusion protruding in a direction toward the diaphragm or in a direction opposite to the diaphragm, and the second edge having a second edge protrusion protruding in a direction opposite to the protruding direction of the first edge protrusion, wherein the first combination has a Young's modulus and the second combination has a Young's modulus that is greater than a Young's modulus of the diaphragm edge, the first edge has a Young's modulus smaller than a Young's modulus of the second edge, the first edge has a Young's modulus greater than a Young's modulus of the diaphragm edge, and a connection between the first damper and the first edge has a Young's modulus greater than a Young's modulus of the first damper and a Young's modulus of the first edge, and a connection between the second damper and the second edge has a Young's modulus greater than a Young's modulus of the second damper and a Young's modulus of the second edge.