/diy/ - Do It Yourself

Anonymous Sat May 26 07:30:50 2018 No.1394013 [View]
File: 37 KB, 948x623, my1.png [View same] [iqdb] [saucenao] [google]

Hello. Not long ago I made a portable speaker from DIY components. It works nicely overall though I have some issues. Namely, speakers make quiet thudding sound when turned on and loud whistling sound when turned off. I used 150W step up module for adjusting voltage up to 16V and 4A. Amplifier is PAM 8610 with two 4 ohm speakers. Please see scheme attached. Have I made a mistake somewhere (with capacitors capacity etc) or could it be component issue (I suspect step up module)? I used the same scheme but with tda7297 amplifier, there were no similar sounds.

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/diy/ - Do It Yourself

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