t.kaiming 發表於 2011-1-8 18:11:49

請問圖中部後級紅圈個線圈同粒電阻有什麼作用?

THANK YOU!

kk_ho 發表於 2011-1-8 18:28:41

Output low pass filter, 防止超高頻自激振盪。

t.kaiming 發表於 2011-1-9 16:54:39

會唔會影響音色?

hcheung 發表於 2011-1-14 18:00:26

教科書正解(Introduction to Electroacoustics and Audio Amplifier Design, W. Marshall Leach Jr):
"The voice-coil impedance of a loudspeaker driver is not purely resistive. This can have a major perturbation
on the performance of crossover networks...A matching network, sometimes called a Zobel network, between the crossover network and the voice-coil terminals of a driver can be used to cause the effective load on the crossover network to be resistive."

其實Zobel network 重有一隻電容...

kk_ho 發表於 2011-1-16 15:36:33

Yes, inductor inseries of output, then R+C // to the output terminal.

You can found a cap and resistor locate near of the inductor. (Cap is yellow color)

alicechan11 發表於 2016-11-30 22:48:25

本帖最後由 alicechan11 於 2017-8-2 16:47 編輯

thanks for sharing市場推廣服務
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