(19)
(11) EP 1 042 866 A1

(12)

(43) Date of publication:
11.10.2000 Bulletin 2000/41

(21) Application number: 98966031.1

(22) Date of filing: 21.12.1998
(51) International Patent Classification (IPC)7: H03G 3/00
(86) International application number:
PCT/US9827/174
(87) International publication number:
WO 9933/173 (01.07.1999 Gazette 1999/26)
(84) Designated Contracting States:
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

(30) Priority: 23.12.1997 US 68716 P

(71) Applicant: LEXICON
Bedford, MA 01730 (US)

(72) Inventor:
  • GRIESINGER, David
    Cambridge, MA 02140 (US)

(74) Representative: Becker Kurig Straus 
PatentanwälteBavariastrasse 7
80336 München
80336 München (DE)

   


(54) METHOD AND SYSTEM FOR DRIVING SPEAKERS WITH A 90 DEGREE PHASE SHIFT