Loudspeaker enclosure with damping material laminated within internal shearing brace

A loudspeaker cabinet comprising:

• a plurality of exterior panels enclosing an air volume;
• at least one electromagnetic transducer coupled to one of the exterior panels so as to have a front diaphragm surface exposed to a listening ambient and a rear diaphragm surface exposed to the enclosed air volume;
• and
• at least one laminated brace each coupled between a respective opposing pair of the exterior panels, wherein the laminated brace includes,
• a first brace member coupled to a first exterior panel of the pair but not to a second exterior panel of the pair,
• a second brace member coupled to the second exterior panel of the pair but not to the first exterior panel of the pair,
• the first and second brace members overlapping in an overlap region, and
• a layer of damping material disposed between and affixed to the first and second brace members in the overlap region.

An improvement in a loudspeaker cabinet, the loudspeaker cabinet including a plurality of exterior panels coupled together to enclose a volume of air, and an electroacoustic transducer coupled to one of the exterior panels such that a rear surface of a diaphragm of the transducer is in contact with the enclosed air volume, wherein the improvement comprises:

• at least one internal brace including,
• a first brace panel coupled to a first one of the exterior panels,
• a second brace panel overlapping the first brace panel in an overlap region, and
• a layer of damping material disposed between and affixed to the first and second brace panels in the overlap region;
• whereby flexure and vibration of the first exterior panel are damped by shearing force in the layer of damping material.