Patent ID: 6215884
Filing Date: 2001-04-10
Classification: H04R

Abstract:
A loudspeaker system module comprising:a piezoelectric element subject to displacement by applied electric potential and having a top side and an under side;a panel diaphragm, having a top side, that is driven by the piezoelectric element and to which the under side of the piezoelectric element is joined;damping means for reducing the structural resonances in the panel diaphragm and located in proximity to the piezoelectric element, said damping means being tunable to damp at a fundamental resonance of the loudspeaker system module and said damping means having another function different from said damping means; andelectronic means for receiving an input audio signal and amplifying said signal, said electronic means being electrically connected to said piezoelectric element to apply electric potential thereto, said means having an under side and being positioned above the top side of said piezoelectric element; andmeans for substantially covering said electronic means and the top side of the piezoelectric element,wherein said damping means completely covers the piezoelectric element between the top side of said panel diaphragm and the under side of said electronic means to isolate said piezoelectric element.