EP 0531998 B1 19970409 - Speaker unit and covering structure therefor
Title (en)
Speaker unit and covering structure therefor
Title (de)
Lautsprecher mit Abdeckung dafür
Title (fr)
Haut-parleur et structure de son couverture
Publication
Application
Priority
- JP 10888891 U 19911209
- US 75776591 A 19910911
Abstract (en)
[origin: EP0531998A2] Disclosed is a speaker unit casing structure including a speaker unit support of a high-rigid material. To prevent radiation of the resonance sound from the rigid parts of the speaker system, the high-rigid material parts of the speaker unit and the speaker unit support are covered with a sound absorbing material (3a), and the covering of the sound absorbing material is covered with a sheet (3b) of sound barrier material which is characteristic of an increased acoustical loss. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP)
H04R 1/288 (2013.01); H04R 1/026 (2013.01)
Designated contracting state (EPC)
DE DK FR GB IT NL
DOCDB simple family (publication)
EP 0531998 A2 19930317; EP 0531998 A3 19940216; EP 0531998 B1 19970409; DE 69218861 D1 19970515; DE 69218861 T2 19971120; DK 0531998 T3 19970505
DOCDB simple family (application)
EP 92115503 A 19920910; DE 69218861 T 19920910; DK 92115503 T 19920910