A surround for supporting a diaphragm used to create acoustic waves
includes a rib section extending away from the diaphragm and a membrane
section that is supported by the rib section. The membrane section has a
thickness in a direction substantially normal to opposing top and bottom
surfaces of the membrane section which is substantially thinner than a
thickness of the rib section in a direction substantially normal to
opposing top and bottom surfaces of the rib section. A restoring force
returning the diaphragm to a home position is contributed to more due to
deformation of the rib section than to deformation of the membrane
section.