EP 0485010 A1 19920513 - A filtering device for high frequency loudspeakers.
Title (en)
A filtering device for high frequency loudspeakers.
Title (de)
Filterungsvorrichtung für Hochtonlautsprecher.
Title (fr)
Dispositif de filtrage pour haut-parleurs à haute fréquence.
Publication
Application
Priority
IT 8563790 A 19901108
Abstract (en)
A filtering device for a high frequency loudspeaker comprises a resistor (3) interposed in series on the feeding line of the loudspeaker, and downstream of the resistor there is provided an inductor (8) located directly in parallel with respect to the loudspeaker (2). The device permits to linearize the impedance seen by the amplifier (7) at the output terminals when the frequency varies, a fact which permits the attainment of a substantial improvement in the operating conditions of the amplifier. <IMAGE>
IPC 1-7
IPC 8 full level
CPC (source: EP)
H04R 3/14 (2013.01)
Citation (search report)
- [X] US 3067390 A 19621204 - WOLCOTT HENRY O
- [A] EP 0241994 A1 19871021 - GELUK RONALD JAN IR
- [A] JOURNAL OF THE AUDIO ENGINEERING SOCIETY. vol. 26, no. 11, November 1978, NEW YORK US pages 850 - 855; J.K. HILLIARD AND H.R. KIMBALL: 'Dividing Networks for Loud Speaker Systems'
- [A] FUNKSCHAU vol. 54, no. 25, December 1982, MUNCHEN DE pages 52 - 55; R. SCH]TZ: 'Frequenzweichen f}r Lautsprecher'
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IT LI LU NL SE
DOCDB simple family (publication)
EP 0485010 A1 19920513; IT 1243159 B 19940524; IT 9085637 A0 19901108; IT 9085637 A1 19920508; JP H04267700 A 19920924
DOCDB simple family (application)
EP 91202795 A 19911029; IT 8563790 A 19901108; JP 29280191 A 19911108