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(59 votes) Published: May 23, 2008 12:51 a.m. In 1 Favorites Lists Viewed 703 times
Introduction:
Have you ever wondered how a speaker works? For years I have pondered this question, so I finally did some research and discovered it was actually pretty simple. A speaker is composed of a regular magnet and voice coil or electromagnet. Positive and negative electrical pulses are rapidly sent to the voice coil to repel and attract the regular magnet. This rapid motion creates sound waves.
Materials:
Essentials
-Magnet(s) (Found at Radio Shack)
-30+ gauge wire (Found at Radio Shack as "Magnet Wire")
-Paper
-Glue and/or tape
-Regular speaker wire
Optionals
-Lighter
-Paper or Styrofoam plate
Step One: Magnet
Most Magnets are found in a cylindrical shape. Glue a series of magnets together to create one big magnet.
Step Two: Voice Coil
To create a voice coil start off by wrapping a piece of paper once around the series of magnets. Tape the paper to itself so it can easily slip off the magnet. Next tape a second sheet around the first one. (The purpose of the first sheet is to create a tiny amount of space between the magnet and voice coil to allow them to move freely.) Next wind the 30 gauge wire ATLEAST 50 times around the magnet, first paper and second paper. Be sure to leave the two end of the wire pointing out so you can find them.
Step Three: Final Preparation
The Magnet wire found at Radio Shack has paint around it. The 2 extending wire from the voice coil Must have the paint removed about 1/2 in. from the tip to be able to connect to the speaker wire. Do this by scraping with a razor blade or by burning with a lighter. Once this is done connect the speaker wire to the voice coil wire by either soldering or taping. Next, take the sponge and cut a 1/4 in. cube. Stuff this inside the top of the voice coil cylinder.(This allows the voice coil to vibrate.) Lastly glue the sponge and voice coil to the center of the plate and slip the voice coil over the magnets.
In Conclusion:
-Plug the speaker wire into the outputs of your stereo as shown in the picture above
- This speaker is going to be very quiet but somewhat clear.
- The instructions don’t have to be followed exactly for this to work. Try your own designs and see which one works the best. Just be sure that the is a voice coil and magnet close to each other.
I remember making one of these for fun in Electronics (Think it was year... 8 or 9). Good times. Shit quality sound but eh... That’s what I got for trying to use the speaker on the Amp kit I also made, haha.
May 25, 2008 9:31 pm - i agree greggers due to pic but i couldnt proove nothin so i dont talk lol. if its prooven as c/p tho im makin a speaker thread, prison style :D
Jun 07, 2008 4:02 pm - just because someone can make half decent pictures doesn’t make their egg c/p. It means that they actually put some time into their work and deserve a 5*. its a good egg too. only thing is you left out materials on the list that you used in the egg. 5* anyway
Jun 18, 2008 7:25 pm - ...
This is in a Metacafe video I saw recently...
You have to discard the inner tube of paper. That’s what gives you the gap you need.
The sponge method of voice coil suspension seems unique...
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