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Acoustic Smartphone Amplifier

A passive audio amplifier built with some scrap walnut and maple.

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Comment by Greg Thompson on January 24, 2015 at 3:22am: Cool! Very clever. I have to share this my students. Thanks for sharing!

Comment by Uncle John on January 23, 2015 at 11:17am: I almost didn't look at this one, Daniel, as I don't have a smart phone. Gees. Pretty neat and effective.

Comment by Jim Morris on January 23, 2015 at 11:09am: Daniel your like a genius! Will it work with my stupid phone too?

Comment by the anonymous pick on January 23, 2015 at 11:05am: kewl

Comment by Bad Finger (Eric) on January 23, 2015 at 10:17am: Cool use for scraps! Nice.

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Acoustic Smartphone Amplifier

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