(19)
(11) EP 1 414 267 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
16.06.2004 Bulletin 2004/25

(43) Date of publication A2:
28.04.2004 Bulletin 2004/18

(21) Application number: 03450226.0

(22) Date of filing: 07.10.2003
(51) International Patent Classification (IPC)7: H04R 9/00, H04R 9/06
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
Designated Extension States:
AL LT LV MK

(30) Priority: 22.10.2002 AT 16072002

(71) Applicant: AKG Acoustics GmbH
1230 Wien (AT)

(72) Inventors:
  • Gmeiner, Thomas, Dipl.-Ing.
    1170 Wien (AT)
  • Lehdorfer, Hannes Ing.
    1220 Wien (AT)
  • Stöttinger, Ernst, Dipl.-Ing.
    1090 Wien (AT)
  • Steiner, Johann
    7121 Weiden (AT)

(74) Representative: Patentanwälte BARGER, PISO & PARTNER 
Mahlerstrasse 9 P. O. Box 96
1010 Wien
1010 Wien (AT)

   


(54) Miniaturized loudspeakers


(57) The invention concerns a miniaturized loudspeaker that operates according to the electrodynamic principle, and particularly for incorporation in small devices, such as telephones, mobile phones, hands-free devices for telephones, headphones, or the like, with a membrane (3) and a moving coil (4) fastened to it, a membrane holder (5), a magnet system (2), and optionally a front cover (7) and/or a rear cover, as well as a digital amplifier.
The invention is characterized by the fact that the digital amplifier is arranged in the form of an integrated circuit (10) either on the magnet system (2) or on the membrane holder (5), or on the inside of the front cover (7) or the rear cover.






Search report