Patent ID: 9538290
Date: 2017-01-03
CPC Classifications: H04R

Claim:
1. Coaxial loudspeaker arrangement with an outer diaphragm ( 21 ) for operating in a lower frequency range, an inner diaphragm ( 23 ) for operating in a higher frequency range, both located in a common loudspeaker frame ( 10 ), with an outer voice coil ( 22 ) connected to the outer diaphragm ( 21 ), an inner voice coil ( 24 ) connected to the inner diaphragm ( 23 ), two coaxially arranged magnets ( 31 , 32 ), and ferrite cores ( 41 , 42 , 43 ) in association with the magnets, wherein the voice coils ( 22 , 24 ) extend into air gaps ( 51 , 52 ) between the ferrite cores, and the diaphragms are connected to the loudspeaker frame ( 10 ) through flexible suspending elements ( 12 - 14 ), characterised in that an inner core ( 41 ) and an outer core ( 42 ) separated from each other by an inner air gap ( 52 ), are located between an outer magnet ( 31 ) and an inner magnet ( 32 ); one ferrite core ( 43 a ) of the outer magnet ( 31 ) is separated by an outer air gap ( 51 ) from the outer core ( 42 ) located between the two magnets, wherein the voice coil ( 22 ) of the outer diaphragm ( 21 ) extends into the outer air gap ( 51 ) and the voice coil ( 24 ) of the inner diaphragm ( 23 ) extends into the inner air gap ( 52 ).