Blueprint Acoustics Pty Ltd

Erik Thorsell

A loudspeaker system includes a loudspeaker assembly and a headrest having a front side and a rear side, the front side being constituted for resting a back side of a head of a person. The loudspeaker assembly is accommodated in the headrest with its front side oriented towards the front side of the headrest, the loudspeaker assembly including a first and a second driver each having a primary side and a secondary side for emitting sound, and first and second chambers, a part of the first chamber being limited by the primary side of the first driver and a part of the second chamber being limited by the primary side of the second driver. The assembly further includes a first front set of vent ducts venting the first chamber and terminating at the front side of the headrest, a second front set of vent ducts venting the second chamber and terminating at the front side of the headrest, at least one further chamber and at least one rear set of vent ducts. The secondary sides of the first and second drivers limit a part of one of the at least one further chamber or limit a part of different ones of the at least one further chamber, the at least one further chambers being respectively vented by a respective one of the at least one rear set of vent ducts terminating at the rear side of the headrest. The first and second chambers together with the front ducts form front Helmholtz resonators, the at least one further chamber together with the at least one rear set of vent ducts form at least one rear Helmholtz resonator.

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Billdal, Sweden

Erik Thorsell