Loudspeaker assembly

A headrest including a loudspeaker assembly, the loudspeaker assembly comprising:

• a loudspeaker, including:
• a diaphragm having a first radiating surface for radiating sound in a forward direction and a second radiating surface for radiating sound in a rear direction, wherein the first radiating surface and the second radiating surface are located on opposite faces of the diaphragm;
• a drive unit configured to move the diaphragm based on an electrical signal;
• a drive unit frame, wherein the diaphragm is suspended from the drive unit frame via one or more loudspeaker suspension elements;
• a rear enclosure that encloses a volume configured to receive sound produced by the second radiating surface, wherein the rear enclosure includes one or more regions of porous material configured to allow sound produced by the second radiating surface to exit the volume enclosed by the rear enclosure via the one or more regions of porous material;
• and
• a waveguide for directing sound produced by the first radiating surface in the forward direction towards a mouth of the waveguide, wherein the waveguide includes one or more regions of porous material configured to allow sound produced by the first radiating surface to exit the waveguide via the one or more regions of porous material;
• wherein the waveguide of the loudspeaker assembly is at least partially formed by internal contours of the headrest;
• wherein:
• the one or more regions of porous material in the rear enclosure have a specific airflow resistance in the range 1000-10000 Pa·s/m and provide at least 50% of an externally facing surface area of the rear enclosure;
• and
• the one or more regions of porous material in the waveguide have a specific airflow resistance in the range 500-5000 Pa·s/m and provide at least 50% of an externally facing surface area of the waveguide.

A lamp including a loudspeaker assembly, the loudspeaker assembly comprising:

• a loudspeaker, including:
• a diaphragm having a first radiating surface for radiating sound in a forward direction and a second radiating surface for radiating sound in a rear direction, wherein the first radiating surface and the second radiating surface are located on opposite faces of the diaphragm;
• a drive unit configured to move the diaphragm based on an electrical signal;
• a drive unit frame, wherein the diaphragm is suspended from the drive unit frame via one or more loudspeaker suspension elements;
• a rear enclosure that encloses a volume configured to receive sound produced by the second radiating surface, wherein the rear enclosure includes one or more regions of porous material configured to allow sound produced by the second radiating surface to exit the volume enclosed by the rear enclosure via the one or more regions of porous material;
• a waveguide for directing sound produced by the first radiating surface in the forward direction towards a mouth of the waveguide, wherein the waveguide includes one or more regions of porous material configured to allow sound produced by the first radiating surface to exit the waveguide via the one or more regions of porous material;
• and
• a light source wherein the light source is configured to project light from the mouth of the waveguide;
• wherein:
• the one or more regions of porous material in the rear enclosure have a specific airflow resistance in the range 1000-10000 Pa·s/m and provide at least 50% of an externally facing surface area of the rear enclosure;
• and
• the one or more regions of porous material in the waveguide have a specific airflow resistance in the range 500-5000 Pa·s/m and provide at least 50% of an externally facing surface area of the waveguide.