Patent ID: 7324656

Claim:
A wide dispersion speaker system comprising: a cone speaker unit; and a restricting element, wherein the cone speaker unit has a diaphragm, the restricting element is configured to cover the diaphragm from forward, the restricting element is provided with a center hole and a peripheral hole, the center hole is positioned forward relative to a center section of the diaphragm, the peripheral hole is positioned radially outward relative to the center hole, a sum of an area of the center hole and an area of the peripheral hole is smaller than an area of the diaphragm, the area of the center of the center hole is not less than 20% and not more than 50% of the area of the diaphragm, the area of the peripheral hole is not less than 1% and not more than 25% of the area of the center hole, the restricting element has an annular sound travel inhibiting portion positioned radially outward relative to the center hole and radially inward relative to the peripheral hole, and an outer end in a radial direction of the sound travel inhibiting portion is positioned at a substantially middle point between an outer end in the radial direction of the center hole and an outer end in the radial direction of the peripheral hole, or positioned radially outward relative to the substantially middle point.