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Whirlwind Papercraft Passive Amplifier

Computers & Mobile
Whirlwind Papercraft Passive Amplifier

We’ve seen papercraft passive amplifiers before, but the Whirlwind from instructables member urant folds away flat so you can stick it into your pocket. [via Life Hacker]

4 thoughts on “Whirlwind Papercraft Passive Amplifier

  1. mikayla says:

    i could use this. it is a pretty smart idea by the way sound travels.

  2. papercraftsquare says:

    cool! can i repost this model at

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