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音频功率放大器(定阻抗式)与多个扬声器连接时,在各扬声器分配功率为预定的条件下放大器输出级与负载阻抗匹配问题,在许多书刊里都用下面一类公式组来计算(参看图一):
When an audio power amplifier (constant impedance type) is connected to a plurality of speakers, impedance matching between the amplifier output level and the load at predetermined power distribution of each speaker is calculated using the following type of formula group in many books and magazines (see the figure one):