Subscribe to Make Magazine Today!

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

Adam Flaherty

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

13 Responses to iPhone Papercraft Passive Amplifier

Your Thoughts?

Your email address will not be published. Required fields are marked *

You may use these HTML tags and attributes: <a href="" title=""> <abbr title=""> <acronym title=""> <b> <blockquote cite=""> <cite> <code> <del datetime=""> <em> <i> <q cite=""> <strike> <strong>

  1. Mariess on said:

    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…

  2. Pingback: eco-amp: the recyclable iPhone amplifier | Gadget Dev

  3. Pingback: eco-amp: the recyclable iPhone amplifier | TravelDio

  4. 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.

  5. Pingback: 종이로 만든 아이폰용 패시브 앰프 | Make: Korea

  6. Pingback: MAKE | Whirlwind Papercraft Passive Amplifier

  7. Pingback: ○DIY/Tip▶ Whirlwind Papercraft Passive Amplifier « dot dot dob tob tob

  8. Pingback: Whirlwind Papercraft Passive Amplifier | vis a vis | visual mind

  9. Pingback: Whirlwind Papercraft Passive Amplifier

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

Related Supplies at Maker Shed