Title (en)

Loudspeaker with motional feedback.

Title (de)

Lautsprecher mit Membrangegenkopplung.

Title (fr)

Haut-parleur avec contre-réaction motionnelle.

Publication

EP 0107777 A1 19840509 (DE)

Application

EP 83109246 A 19830919

Priority

DE 3237262 A 19821008

Abstract (en)

In this loud speaker, the transducer generating the signal derived from the movement of the diaphragm is constructed as Hall element (14). <IMAGE>

Abstract (de)

Ein Lautsprecher mit Membrangegenkopplung, bei welchem der das aus der Bewegung der Membran abgeleitete Signal erzeugende Wandler als Hall-Element (14) ausgebildet ist.

IPC 1-7

H04R 3/04

IPC 8 full level

H04R 3/00 (2006.01)

CPC (source: EP)

H04R 3/002 (2013.01)

Citation (search report)

• [X] DE 2658528 A1 19780629 - SIEMENS AG
• [X] US 3408575 A 19681029 - PETROCELLI EDWARD A, et al
• [Y] GB 1109220 A 19680410 - CLARK EQUIPMENT CO
• [Y] GB 976783 A 19641202 - GEN PRECISION INC
• [A] FR 2296985 A1 19760730 - LAN YAN FOCK ALAIN [FR]

Designated contracting state (EPC)

AT BE CH FR GB IT LI LU NL SE

DOCDB simple family (publication)

DE 3237262 C1 19831027; EP 0107777 A1 19840509

DOCDB simple family (application)

DE 3237262 A 19821008; EP 83109246 A 19830919