Picture of Make a Real Working Speaker for Under $1.00!
Here's how to make a real working paper plate speaker for under $1.00!

Step 1: Watch the Video!

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JustinL36 months ago

Does it have to be voice coil? What if you just use conducting wires?

SiddharthK6 months ago

Where can I get Neodymium Magnets ???

Lagash2 years ago
Maybe here I have some dumb questions: on step 4, why 50 turns?

I have found different enameled copper wires and I am trying to choose one.
Some are about 1mm diameter (more like 0.9 mm) and others are closer to 0.1-0.2 mm.
If I do, for example, 250 turns with the thinner one do I get different results?
I do not have any experience but I can imagine (in a pure sci-fi way) that in this case is generated a stronger magnetic field and maybe I obtain the same "kinetic" vibration with less current.
Is this somehow right or all I get is just higher resistance and higher consumptions?

...a more practical question: the thinner cable "melts" when I try to peel the coating with a lighter, it curls a bit and forms a tiny ball at the end of the wire.
It works if I solder it to other cables, shall I continue with this method or is better if I peel the next wires with a knife?

thanks for the attention and sorry for my English.

I don't know how many turns you would need for a speaker like this, but I do know this. It works better for me if I use sandpaper to take the insulation off the ends of the wire. It is nice and clean.

rniedra1 year ago
So now i don't need to buy subwoofers for my car i can make some hundred of thoes and put in my car ok i am just joking i am 11 years old Sorry for my bad english i am a Latvian
hyattfamily2 years ago
what type of wire would you suggest to wrap around the magnet, and would it be better if I wrapped the wire around the magnet more???
ToXiCATOM2 years ago
cool DUDE I favorited this instructables!!!
very nice instructable.favourited.i made a speaker using your diirections.thanks
m.m.m2 years ago
and sometimes we should sand paper the connections of the wire for troubleshooting.
vibil2 years ago
The King of Random (author)  vibil2 years ago
Did you mean madarchod?
farmerboyk2 years ago
In the video at 3:59, your FINGER is releasing fire. Magic!
The King of Random (author)  farmerboyk2 years ago
Haha nice :)
kbryson2 years ago
DUDE, totally put the goo on the plate and see what happens!!!
The King of Random (author)  kbryson2 years ago
Haha, I like how you think!!
indigo4012 years ago
If you hook LEDS up directly to the speaker NOT the speaker wire coming out of the receiver they will flash with the bass it's really neat you should try it
The King of Random (author)  indigo4012 years ago
Nice .. I've been meaning to try that!
Great fun and awesome educational experience!!!

Just spent the last couple hours building a couple mid-range and base speakers with the wife and kids. Used small bowls for the mid-ranges and a large plate for the base. We have an old boombox with an equalizer and were able to easily test the frequency range of each. They worked beautifully. My 11 year old son is now building a tweeter out of a paper cup.

Spent the first hour taking apart a broken wall wart transformer plates to unwind the magnet wire. In the end we use only the larger magnet wire and spools I already had. It isn't worth the effort to salvage wire - way too much work and risk of injuring yourself. It was educational though.
Thanks for your great feedback! What inspired your awesome project, and will you have a video showing the result and the frequency range tests?

I'm curious to know what magnets you used as well?

Thanks again :D
I saw it on the weekly Instructables email and thought it would be fun to do with the kids as a family project. Sorry, no video this time. Nothing astounding on the frequency reproduction, The larger plate had good base (nice at reproducing the deep drums) but not very good at higher frequencies. The medium sized bowls had good medium freq' reproduction, but not too good on the deep base or higher twangy notes. The cup was the best and appeared loudest probably because it has more directionality.

The magnets were mostly of the black polished shiny variety and varied in size and shape. You find them in lots of stores as cheap toys. I also had a bunch of neodymium magnets of various sizes and shapes.

We also found the speakers buzzed as they bounced on the hard surface so we put a napkin under them and fixed the issue.
The paper cup was lighter too, allowing it to travel further in each direction, also creating a louder sound.
The King of Random (author)  james.m.k2 years ago
That makes sense. A plastic cup was the first thing I ever tried, and even hooked up to an mp3 player and a week fridge magnet, I could hear sound. Thanks for your comment James!
I don't recall how old I was, but once I plugged a microphone into a headphone jack and could very clearly hear the music. Proving to myself that speakers and microphones are simmilar enough that one can be used as the other, no matter how poorly they do it.

I thought that was funny as all get-out.
The King of Random (author)  james.m.k2 years ago
Exactly right! I've also done the reverse and used a headphone as a microphone. Although the signal has to be amplified to get much of an audible result. I've been thinking about doing that as a project as well one of these days.
Mr Collinsworth, I really appreciate your detailed reply. Thanks very much for sharing your experiences!
The paper cup worked the best and was the quickest and easiest to build - only about 5 minutes. He used two paper cups back to back and just a couple straight pieces of file folder cut about an inch wide and 8 inches long to connect them. No accordion necessary. He also used only about 25 turns of heavy magnet wire around a stack or cheap 1/2 inch common magnets - much less than we used on all the other speakers which ranged from 50 - 200 turns.
if you still have it put as muck power through it until it melts, while playing dubstep or some bassy music, film it and upload it if you do
I plugged one of these into a wall outlet and it evaporated the wire :) And yes I got it on film.
Haha maybe some day. Makes a loud bang and a lot of smoke as well just so you know.
james.m.k2 years ago
Hah! Genius!

Reminds me of when I "made" a phonograph when I was in 2nd grade. I was curious if the grooves in records were really just sound vibrations and an analog of what the air does.

I used a turntable (I couldn't make that), a straight-pin, and aluminem (sp) foil for the speaker. Wasn't loud, but it was clear!

My mother was not amused. ^_^
But yours is better!
The King of Random (author)  james.m.k2 years ago
Very cool!
I forgot, I also placed a record needle (attached to the player) on top of foil and made a microphone! I think that was the same day! Lots of fun for a little kid!

M.C. Langer2 years ago
Awesome!!! Thanks for sharing!
The King of Random (author)  M.C. Langer2 years ago
You're welcome, and thanks for checking out another project!
Hey, you have simple but incredibly awesome projects! You become a great source of Macgyverisms for me! :-)
The King of Random (author)  M.C. Langer2 years ago
I'm really glad to hear that you found some value in them! I remember how impressed I was when I saw your work, and will probably visit them again!
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