Sound image enhancing

A speaker system comprising,

• a left channel input and a right channel input for receiving left channel and right channel signals respectively,
• a left channel driver coupled to said left channel input,
• a right channel driver coupled to said right channel input,
• an (L-R) driver unit coupled to both said left channel input and said right channel input having structure arranged to passively differentially combine the signals on said inputs to provide an (L-R) acoustic output signal, and
• an (R-L) driver unit coupled to both said left channel input and said right channel input having structure arranged to passively differentially combine the signals on said inputs to provide an (R-L) acoustic output signal,
• wherein said (L-R) driver unit has a common diaphragm with a first left voice coil portion coupled to said left channel input and a second left voice coil portion coupled to said right channel input 180 degrees out of phase with said left voice portion, and
• said (R-L) driver unit has a common diaphragm with a first right voice portion coupled to said right channel input and a second right voice coil portion coupled to said left channel input 180 degrees out of phase with the latter right voice coil portion,
• wherein said left channel driver and said first left and second right voice coil portions are connected in series to said left channel input, and
• said right channel driver and said first right and second left voice coil portions are connected in series to said right channel input.

A speaker system comprising,

• a left channel input and a right channel input for receiving left channel and right channel signals respectively,
• a left channel driver coupled to said left channel input,
• a right channel driver coupled to said right channel input,
• an (L-R) driver unit coupled to both said left channel input and said right channel input having structure arranged to passively differentially combine the signals on said inputs to provide an (L-R) acoustic output signal, and
• an (R-L) driver unit coupled to both said left channel input and said right channel input having structure arranged to passively differentially combine the signals on said inputs to provide an (R-L) acoustic output signal,
• wherein said left channel driver and said right channel driver are adapted to be positioned in a manner such that a listener perceives sound output from said left channel driver and from said right channel driver as originating from a location of a video display screen, and
• said (L-R) driver unit and said (R-L) driver unit are adapted to be positioned in a manner such that a listener perceives sound output from said (L-R) driver unit as originating from a first location spatially set apart from said location of said video display screen, and perceives sound output from said (R-L) driver unit as originating from a second location spatially set apart from said location of said video display screen,
• and further comprising a bass frequency system coupled to said left channel input and said right channel input, and wherein said left channel driver, said right channel driver, said (L-R) driver unit, and said (R-L) driver unit comprise upper frequency drivers.

A speaker system comprising

• a left channel input and a right channel input for receiving left channel and right channel signals respectively,
• a left channel driver coupled to said left channel input,
• a right channel driver coupled to said right channel input,
• an (L-R) driver unit having structure arranged to differentially combine the signals on said inputs to provide an (L-R) acoustic output signal during a video mode of operation,
• a (R-L) driver unit having structure arranged to differentially combine the signals on said inputs to provide a (R-L) acoustic output signal during a video mode of operation, and
• switching circuitry for coupling the (L-R) driver unit to both said left channel input and said right channel input during said video mode of operation and to only said left channel input during an audio mode of operation, and for connecting the (R-L) driver unit to both said left channel input and said right channel input during said video mode of operation and to only said right channel input during said audio mode of operation.