电子分频器：有源电路，位于功率放大器之前，将前置音频信号分频后再用各自独立的功率放大器，把每一个音频频段信号给予放大，然后分别送到相应的扬声器单元-Electronic frequency divider: active circuits, in front of the power amplifier, will lead audio signal frequency and then separate the power amplifier, the every audio frequency signals given amplification, and then were sent to the corresponding speaker unit