Passive Acoustic Speaker for Kindle Fire / Ipad

Picture of Passive Acoustic Speaker for Kindle Fire / Ipad
This is not a new idea, just my version of a diy on this passive acoustic speaker (PAS) for Kindle Fire or other mobile device with built in speakers.  I was so stoked to get on this project that I did not take real-time step-by-step pictures of the process.  Rather, I will  show pictures of the finished PAS as I describe the construction process.

My goal was to have an attractive, portable, and functional form of acoustic amplification for my Kindle Fire.  The result was a decorative piece that fits in with our design and offered a more detailed and dynamic sound for our listening pleasure.  Enjoy!
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Step 1:

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The first step was to select a piece of walnut wood with the dimensions of 5 1/4 " x 5 1/4 " x 1 3/4" thick.  I chose walnut because of it's density and reflective qualities when it comes to sound reproduction.  I also like the look of the grain and figure. 

Step 2:

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The next step was to rout the bottom of the PAS to a depth of 5/16".  I left a 3/4" wide swath on the front and back edge to be used as the legs of the speaker.

Step 3:

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Step 3 was the routing of the Kindle Fire channel in the top of the PAS.  I made this slightly wider than the mobile device and routed to a depth of 9/16", just deep enough for solid support of the Kindle Fire.  After that I drilled holes in the channel through the base of the PAS to line up with the speakers on the device.  I then gouged the holes into a rectangular port to fit the dimension of the built in speakers.
OddJob (author) 2 years ago
RangerJ, if I were to do it again I would probably rout the bottom to a deeper depth. I think it might increase the bass response. Also a thicker block of wood might be fun to work with in channeling the sound through multiple ports.
RangerJ2 years ago
That's a very nice Instructable. I have a Nook; I think I can use the same idea on that to much improve the very weak audio.