Global Patent Index - EP 2077680 A1

EP 2077680 A1 20090708 - Loudspeaker system with double chamber enclosure

Title (en)

Loudspeaker system with double chamber enclosure

Title (de)

Lautsprechersystem mit Zwei-Kammer-Gehäuse

Title (fr)

Système de haut-parleur avec enceinte à double chambre

Publication

EP 2077680 A1 20090708 (EN)

Application

EP 07024287 A 20071214

Priority

EP 07024287 A 20071214

Abstract (en)

A loudspeaker system is presented which comprises an enclosure (4,6) with two separate air volumes (3,5) which are acoustically linked by a port (7); the port enclosing a plug of air; and an electro-acoustical transducer (1) that converts electrical power into acoustical power and that comprises a diaphragm (2) having a front side and a rear side; the front side of the diaphragm radiates sound into a listening environment and the rear side is directly acoustically coupled to one (5) of the volumes of the enclosure (4,6). The air volume (5) which is directly coupled to the diaphragm (2) and the plug of air located in the port are tuned to form a resonant system driven by the transducer; and the volume (3) that is not directly coupled to the diaphragm (2), is coupled to the plug of air in the port (7).

IPC 8 full level

H04R 1/28 (2006.01)

CPC (source: EP)

H04R 1/2811 (2013.01); H04R 2499/13 (2013.01)

Citation (applicant)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR

Designated extension state (EPC)

AL BA HR MK RS

DOCDB simple family (publication)

EP 2077680 A1 20090708; EP 2077680 B1 20130911

DOCDB simple family (application)

EP 07024287 A 20071214