9V Jam Amp (3/4 Watt)

LM386 Amp board, fixed gain, Plastic cone speaker in a Mason jar! They sound awesome!
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  • Mason jars are pretty tough... I used a glass/tile drill from Harbor Freight... just add water to keep it cool and the dust down... (don't breathe glass dust!)

  • Other than the fact that I would be afraid of breaking it, that is cool as heck.  A jar full of major mojo.   Neat idea.  How did you drill the hole?  Diamond tip bit?  

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