From one aspect, the invention is a method of making a bending wave panel
loudspeaker, comprising rigidly coupling a lever to a panel edge or
marginal portion such that the lever extends at an angle to the plane of
the panel, coupling a bending wave exciter to the lever whereby bending
wave energy is coupled to the panel to produce an acoustic output when
the exciter is fed with a signal and supporting the panel on a suspension
positioned outboard of the lever. From another aspect the invention is a
bending wave panel-form loudspeaker having a lever rigidly coupled to a
marginal portion or edge of the panel, a vibration exciter coupled to the
lever to apply bending wave energy to the panel to produce an acoustic
output and a panel suspension positioned outboard of the lever. From a
further aspect, the invention is a small electronic device, e.g. a mobile
telephone or PDA, having a display screen, and a transparent protective
cover over the display screen, wherein the transparent protective cover
is a loudspeaker as described above.