Patent ID: 7817810

Claim:
An interior aircraft panel comprising: the interior aircraft panel having a first thickness and a first stiffness, the first stiffness being incapable of reproducing a sound in a first frequency range of at least 20 Hz to 600 Hz, wherein the interior aircraft panel has a front surface and a rear surface; a modified section of the interior aircraft panel having been modified to have a second thickness that is less than the first thickness and a second stiffness that is less than the first stiffness, the modified section being configured to function as a diaphragm for a flat-panel speaker; a driver operatively secured to a rear surface of the modified section; a bracket extending across and contacting the rear surface of the driver to support the driver; wherein the bracket includes first and second ends, and the first and second ends are operatively secured to the panel, and wherein the first and second ends are operatively secured to the modified section; and wherein the interior aircraft panel and the modified section, in combination, are configured to reproduce the sound in a second frequency range of at least 300 Hz to 5000 Hz.