★TD-9 is a Hi-Fi bookshelf speakers with butterworth frequency division design. The high channel adopts the third-order Butterworth filter circuit, MKP capacitor, oxygen-free copper hollow core inductor production, the middle and low channel adopts the second-order Butterworth filter circuit. Today we are going to show you how TD-9 is made. Keep watching and if you want more details, please leave a message for me or write your review under the video. We will check it carefully and reply as soon as possible. Don't forget to give me a like, it's very importance!
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