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Passive amplifiers have been doing their acoustic trick since before the Victrola was cutting edge. It’s pretty simple, really– just make some noise on the working end of a horn and you’re likely to hear it a little bit easier in the direction it’s pointed in. The concept works in reverse, too.

This eco-amp from the folks at Eco Made is a die cut piece of 100% post consumer chipboard that you can fold together into a fully functional passive amplifier. It comes unassembled flat, so it’s easy to store until you’re ready to use it. [via gizmag]

Adam Flaherty

I make cool stuff and write about other people making cool stuff on makezine.com. If you have something you think I should see, send me a tip.


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Comments

  1. Mariess says:

    or just buy a real god damn pair of speakers and listen to the music the way the artist intended and not on a horable tinny iPhone speaker…

    1. Klaus says:

      or just shut up and go back to your insignificancy

      1. Drew says:

        Somehow it doesn’t really feel like papercraft if I have to purchase it,,,

    2. maxCohen says:

      If you want to listen to the music the way the “artist intended” you wouldn’t want to listen the poor quality of the file format on an iPhone.

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  3. John Machado says:

    In what way is this eco- anything? It’s basically disposable so resources were put into creating and shipping this thing that doesn’t perform half as well as a pair of head phones and isn’t useful for anything else. If you really want an eco-amp just roll up a piece of paper you’d been using. A for effort, really… but an F for thought.

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  7. [...] seen papercraft passive amplifiers before, but the Whirlwind from instructables member urant folds away flat so you can stick it into your [...]

  8. Lou says:

    Just set your iPhone in a ceramic bowl or mug. It is even louder.