Make a Simple Passive Amplifier for your phone! DIY!

In this video I will show you how to make a simple passive amplifier for your phone. These wooden speakers work great and are awesome for in the kitchen or outside when you want to listen to some tunes. I compare the sound of 4 different designs at the end of the video.
If you make one of these let me know how it went in the comments below!
For more information on this build check out the blog: wp.me/p9SfWK-N
If you still have questions on how its made leave them in the comments below and I will do my best to give you a solid answer.
MUSIC: me playing a riff on the guitar (Bonus points if you guess the song)
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[@dfu1685]

Ya, I think your final one sounded the best! Thank you for breaking it down to the simple basics. It always helps to have just the facts ma’am. And then make them beautiful!

[@swest1662]

Beautiful gift ideas! Love the unique shapes and stain that accent the wood grains! Great idea!

[@nickfonder3441]

Love the tenacious d acoustic background music

[@royh.3239]

Would be interesting to see a decibel meter test to see which one truly works best.

[@mattski1979]

Dynetics cure you much better than Krishna. Thanks for the rocket fuel. I'm gonna blast the D and make a cool loud box. Perhaps I'll make a few of them.