Abstract: A Distributed Mode Loudspeaker (DML) assembly which includes a free motion heat sink module that provides for mechanical reinforcement to the exciter connection to help resist shear forces while not impinging on the ability of the exciter to oscillate the panel in the desired fashion. The panel may also be provided with a flexible sleeve which allows for customization of the panel from an aesthetic point of view as well as for the alteration of specific tone production capabilities of the panel without the need to alter the panel construction or to disconnect the exciter or heat sink.