Acoustic device for radiating sound waves, has panel with wooden core with high modulus of elasticity coating, e.g. resin and textile material; light wood mean raw density less than 400 kg/cubic meter

摘要

The acoustic device has a panel (I) with a core (1) of light wood with a coating (3a,3b) with a high modulus of elasticity, e.g. resin and textile material. The mean raw density of the light wood is less than 400 kg/cubic meter, preferably less than or equal to 260 kg/cubic meter. The light wood is balsa wood, preferably end-grained balsa wood.