Introduction: Clip on Megaphone for a Smart Phone From Scrap.

This is how I made a megaphone to beef up the sound volume of my Samsung Galaxy mini. I like to listen music or audio book when i work in the shed and find that ear bugs snag on everything and the phones volume can be drowned out by the slightest noise. its not as good as powered speakers but for a passive system it does seem to carry well and if you take the time to find the acoustic sweet of the room by aiming the cone at walls etc the tone can be reasonably decent.

I used scraps of copper pipe to make the sound tube and the clip, the clip was cut from a short length of pipe that was split longitudinally  using tin snips and opened out and hammered flat.

The end of the tube that clips over the speaker slot on the phone is flatted into an oval shape to cover the mice better. the clip is a flat strip of copper about 80mm long and about 20mm wide. i folded a small angle at one end and shaped it to match the pipe before soldering the 2 pieces together. the clip was then formed with pliers so the mouth of the tube sits directly over the speaker slot in the case.

The megaphone part is a plastic drinks bottle cut down to your desired size, experiment with different lengths and shapes of cone as it does change the tone. i also tried the metal cone from a bicycle horn but it did not perform as well as the plastic bottle.  The bottle cap is drilled out to 14mm and the 15mm pipe is just a push fit.  the screw cap also also you to experiment with different bottles without having to glue and unglued as you try different cone lengths and shapes.

I use a fake leather flip case on my phone so the clip can grip it without damaging the touch screen on other types of case the clip would have to be padded.

I have uploaded a video, but i had to use my old camera so the quality is not great and the sound is allot more tinny than it really is.



Thanks for looking and i hope you like the idea.

Comments

author
tholopotami made it! (author)2012-07-08

Very unconventional! I like it!

author
Dr Qui made it! (author)Dr Qui2012-07-09

Thanks,  sometimes just messin around with stuff comes up with the a stupidly simple effective solution.

author
rimar2000 made it! (author)2012-07-08

CLEVER!

author
Dr Qui made it! (author)Dr Qui2012-07-08

Thanks.

author
Nick70587 made it! (author)2012-07-07

MacGyver would be proud. Cool.

author
Dr Qui made it! (author)Dr Qui2012-07-08

Thanks.

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Bio: Learning to live with Fibromyalgia brought on be numerous injuries some old some quite recent. Currently under no fixed agenda, just going with the flow ... More »
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