Patent ID: 6956957

Claim:
A loudspeaker comprising: a resonant acoustic radiator; an exciter for applying bending wave energy to the radiator to cause it to resonate, the exciter comprising a voice coil assembly rigidly coupled to the radiator and a magnet assembly; a support for the radiator; and coupling means for resiliently coupling the magnet assembly to the support; wherein the radiator is a member having capability to sustain and propagate input vibrational energy by bending waves in at least one operative area extending transversely of thickness to have resonant mode vibration components distributed over said at least one area and have predetermined preferential locations or sites within said area for an exciter, said exciter being coupled to said member at one of said locations or sites to vibrate the member to cause it to resonate forming the said acoustic radiator which provides an acoustic output when resonating.