| 摘要 |
PURPOSE:To obtain the satisfactory stereophonic properties regardless small space between the left and right loudspeakers, by providing the 1st and 2nd differential amplifiers which receive the left and right signals and at the same time deliver the signals that cancelled the in-phase components of the left and right signals. CONSTITUTION:The left and right channel signals supplied to the input terminals 11 and 12 are amplified by the 1st and 2nd amplifying circuits 13 and 14 respectively. The loudspeakers 15 and 16 are connected to the circuits 13 and 14 in the form of the load. The negative feedback circuits 17 and 18 set the gains of the circuits 13 and 14 respectively. The 1st and 2nd differential amplifying circuits 19 and 20 receive the left and right signals applied to the terminals 11 and 12 and at the same time deliver the signals obtained by cancelling the in-phase components of the left and right signals. These output signals are applied to the circuits 17 and 18 respectively. |
