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1. (WO2001035698) FLAT SPEAKER

Pub. No.:    WO/2001/035698    International Application No.:    PCT/IB1999/002102
Publication Date: Fri May 18 01:59:59 CEST 2001 International Filing Date: Thu Nov 11 00:59:59 CET 1999
IPC: H04R 7/04
Applicants: M-TECH (HK) CO. LTD.
TSOI, Wah, Yung
Inventors: TSOI, Wah, Yung
The invention is applicable on multi and all loudspeakers related application. A loudspeaker with at least one diaphragm which can be vibrated to radiate sound from at least one face, with at least one or more driver unit operable by a varying electric current to generate a varying force on the membrane or diaphragm. The force varies to the electric current. The diaphragm has the circular hole or holes on one or serveral position which the driver unit or units can fit into it and mounted with adhesive.