Transducers improved dual coil floating mass.

Apparatus for improving hearing, comprising: a housing (202) at least one coil (210) coupled to an exterior of the housing; and a magnet (212) positioned within the housing such that an electrical signal through the at least one coil causes the magnet to vibrate relative to the housing, wherein vibration of the magnet causes inertial vibration the housing in order to improve hearing, wherein ends of one of the magnet and the housing each have a recess and in which mechanisms are provided displacement of respective indentations and secured to the other of the magnet and the housing to restrict the magnet to linear movement within the housing.