| 摘要 |
PURPOSE:To increase an output amplitude without losing crosstalk characteristic by using one output terminal of the 1st-3rd amplifier means in common and extracting an output signal between this output terminal and an output terminal of the other amplifier means. CONSTITUTION:Input terminals 41, 43 are connected to input terminals of the 1st-3rd amplifier circuits 45-47 constituting a stereophonic reproducing device main body 44. The amplifiers 45-47 constitute a matrix multiplying respectively a constant number with the L channel and the R channel signal component and adding them. Then, the L and R channel signal components are obtained respectively between the output terminals 48 and 49, and between the output terminals 50 and 49. Further, a potential difference between the output terminals 48 and 50 is detected and fed back to the input terminals 41 and 43. |
