有源分频器电路技术

A Circuit technology for active crossover

在现代声频放大器设备和有源声系统中应用有源分频器能改善设备的质量并省去价格不菲的大容量电容器和电感线圈。首先提出了对分频器参数的要求,然后说明了与电路失真有关的群延时容许值。最后,介绍了几个用作两分频、三分频分频器的有源滤波器电路和特性。

An active crossover applied in the modern sound amplifier equipment and active sound system is capable to improve the quality of the equipment, also save the cost for the expensive large value capacitor and inductance coil. The requirements of the crossover parameters are raised in this article firstly, the tolerance value of the group time delay involved with the circuit distortion also is introduced. At last, some active filter circuits and features for 2 - way, 3 - way crossover are discussed.