EP 1340407 A2 20030903 - LOUDSPEAKERS
Title (en)
LOUDSPEAKERS
Title (de)
LAUTSPRECHER
Title (fr)
HAUT-PARLEURS
Publication
Application
Priority
- GB 0105014 W 20011114
- GB 0029098 A 20001130
Abstract (en)
[origin: WO0245460A2] A loudspeaker comprising a panel-form acoustic member intended for operation as a bending wave radiator and an electrodynamic moving coil transducer having a voice coil mounted to the acoustic member to excite bending wave vibration in the acoustic member, wherein the junction between the voice coil and the acoustic member is of sufficient length in relation to the size of the acoustic member to represent a line drive such that the acoustic member has a mechanical impedance which has a rising trend with bending wave frequency.
IPC 1-7
IPC 8 full level
H04R 7/04 (2006.01); H04R 7/20 (2006.01); H04R 9/02 (2006.01); H04R 9/04 (2006.01)
CPC (source: EP)
H04R 7/045 (2013.01); H04R 9/045 (2013.01)
Citation (search report)
See references of WO 0245460A2
Designated contracting state (EPC)
DE ES FR GB NL SE
DOCDB simple family (publication)
WO 0245460 A2 20020606; WO 0245460 A3 20030313; AR 031425 A1 20030924; AU 2380002 A 20020611; BR 0115753 A 20040706; CN 100433937 C 20081112; CN 1554209 A 20041208; CZ 20031501 A3 20030813; DE 60132357 D1 20080221; DE 60132357 T2 20081224; EP 1340407 A2 20030903; EP 1340407 B1 20080109; GB 0029098 D0 20010110; HK 1054483 A1 20031128; JP 2004515178 A 20040520; MX PA03004732 A 20040504; TW 515220 B 20021221
DOCDB simple family (application)
GB 0105014 W 20011114; AR P010105526 A 20011127; AU 2380002 A 20011114; BR 0115753 A 20011114; CN 01817328 A 20011114; CZ 20031501 A 20011114; DE 60132357 T 20011114; EP 01999128 A 20011114; GB 0029098 A 20001130; HK 03106699 A 20030918; JP 2002546462 A 20011114; MX PA03004732 A 20011114; TW 90129303 A 20011127