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How to Make a Folded Horn Passive Phone Speaker #MusicMonday

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Great instructable with a snazzy design from mxx:

There’s something very attractive about a piece of equipment that needs no electrical power, and the passive phone speaker fits into that category. And of course the challenge for the DIY’er is to build one him/herself.

I decided to build one loosely based on the folded horn principle, after building three prototypes based on three wholly different principles, to compare their sound quality.

Full instructable


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