EP 0015186 B1 19850724 - THREE-CHANNEL ACOUSTIC SYSTEM
Title (en)
THREE-CHANNEL ACOUSTIC SYSTEM
Publication
Application
Priority
FR 7904661 A 19790223
Abstract (en)
[origin: US4326099A] The present invention covers a low frequency acoustic cabinet. The cabinet contains two enclosures holding at least one low frequency loud-speaker so that the front face of each loud-speaker radiates inside a cavity communicating with the outside through an opening of prearranged dimensions. In a preferred way of producing the invention, these enclosures are face to face so that the loud-speaker in one is opposite the loud-speaker in the other. Such a low frequency cabinet is used in particular in high fidelity triphonic acoustic reproduction networks.
IPC 1-7
IPC 8 full level
CPC (source: EP US)
H04R 1/2842 (2013.01 - EP US); H04R 5/02 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE GB NL
DOCDB simple family (publication)
EP 0015186 A1 19800903; EP 0015186 B1 19850724; DE 3070893 D1 19850829; FR 2450019 A1 19800919; FR 2450019 B1 19820402; US 4326099 A 19820420
DOCDB simple family (application)
EP 80400180 A 19800205; DE 3070893 T 19800205; FR 7904661 A 19790223; US 12286980 A 19800220