EP 0492142 A3 19930210 - DRIVER SYSTEM FOR AN EXTENDED-TRAVEL BASS LOUDSPEAKER
Title (en)
DRIVER SYSTEM FOR AN EXTENDED-TRAVEL BASS LOUDSPEAKER
Publication
Application
Priority
DE 4041858 A 19901224
Abstract (en)
[origin: EP0492142A2] According to the invention, a drive system designed with extended travel for bass loudspeakers (10) is specified which prevents the voice coil (21) from impinging on the magnet bottom pot and the voice coil (21) from coming to rest on the top pole plate (12) even if the mounting elements are designed to be very soft. For this purpose, a further coil arrangement (22), to which the amplifier power is also applied, is arranged on the voice coil former (19). Since the current is designed to flow in the opposite direction in coil (21) and coil arrangement (22), the voice coil former (19) is actively decelerated as soon as one of the two winding areas (23; 24) plunges into the air gap (25). <IMAGE>
IPC 1-7
IPC 8 full level
H04R 9/02 (2006.01); H04R 9/04 (2006.01); H04R 9/06 (2006.01)
CPC (source: EP)
H04R 9/025 (2013.01); H04R 9/045 (2013.01); H04R 2209/041 (2013.01)
Citation (search report)
- [X] FR 2362549 A1 19780317 - MAINARDI JACQUES [FR]
- [X] FR 2559332 A1 19850809 - RUELLE JEAN LOUIS [FR]
- [X] US 3983337 A 19760928 - BABB BURTON A
- [X] US 4783824 A 19881108 - KOBAYASHI YOSHIHIRO [JP]
- [A] DE 3629856 A1 19870402 - PIONEER ELECTRONIC CORP [JP]
Designated contracting state (EPC)
AT BE DE DK FR GB IT
DOCDB simple family (publication)
EP 0492142 A2 19920701; EP 0492142 A3 19930210; EP 0492142 B1 19950726; AT E125662 T1 19950815; DE 4041858 A1 19920702; DE 59106088 D1 19950831; DK 0492142 T3 19951211
DOCDB simple family (application)
EP 91120015 A 19911123; AT 91120015 T 19911123; DE 4041858 A 19901224; DE 59106088 T 19911123; DK 91120015 T 19911123