Small box for single speaker
thingiverse
A small box for a single speaker with a hole for a volume control on the side. Instructions Print, snap in a speaker connect a volume control and amplifier (many available for cheap on ebay) and go. I originally made this to try to make corn-starch monsters -- you can see the residue in the pictures, but I think my simple 555 based square wave tone generator wont do the trick. I'll try it with a small amp and sine wave produced from my phone or computer.
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