A panel-shaped loudspeaker includes a panel (1) and an exciter coupled to the panel. The panel is provided with two parallel extending thin walls (1a, 1b) which are interconnected by a structure of thin strip-shaped partitions (1c) situated between the walls. The longitudinal axes of all partitions extend parallel to each other and give the panel an anisotropic bending stiffness. The material of the walls and the partitions of the panel has an internal damping which is at least 2.5% of the critical damping of the relevant material, used in the panel.

Um loudspeaker painel-dado forma inclui um painel (1) e um excitador acoplado ao painel. O painel é fornecido com as duas paredes finas estendendo paralelas (1a, 1b) que são interconectadas por uma estrutura das divisórias descasc-dadas forma finas (1c) situated entre as paredes. Os machados longitudinais de todas as divisórias seestendem- a paralela e dão-nos ao painel uma rigidez de dobra anisotropic. O material das paredes e das divisórias do painel tem umedecer interno que é ao menos 2.5% de umedecer crítico do material relevante, usado no painel.