Picture of build a speaker for 25 cents
after watching many useful tutorials of king of random,kipkay ,aeszok and  other athours i decided to make my own.for this i collected the materials.but on my way of collecting materials i found a new concept of making a  small speaker.i could not buy big neodimiyam magnets and so i took out very small magnets from toys and then tried and actually it worked.and it is under only 25 cents.yes its lets get started.

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Step 1: Things needed

Picture of things needed
for this project you will need:

1)small neodymium magnets very small cilyndrical magnets:3. each costs 0.05 cents total 15 cents
2)a sheet of paper. cost 0.02cents
3)a piece of cardboard .can be found from any junkyards
4)some magnetic wires.can be salvaged from any electronics parts
5)two buisness cards.can be found from any buisnessmen 

thats all you will cost you17cents.

Step 2: Making the voice coil part 1

Picture of making the voice coil part 1
 a speaker has 4 main parts:the voice coil,the magnet ,the diaphragm,and the suspention.when electricity is passed through the speaker the voice coil becomes magnetized and due to the position of magnet the coil attracts it and repels it thus creating vibrations which we receive as firstly lets make our voice coil.take a strip of paper and roll it to make a cilynder shape.the diametre of the mouth of the cilynder should be more than the diametre of the glue it so that it does not not unfold.

Step 3: Make the voice coil part 2

Picture of make the voice coil part 2
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now take some magnetic wires and leaving some inches of wires on the end start coiling the wire on the paper cilynder.coil it 50 again leaving some inches of wire on the end make a knot so that the wires do not unfold

Step 4: Make the voice coil part 3

Picture of make the voice coil part 3
now burn of the insulation of the wires on the ends using lighter

Step 5: Make the diaphragm of the speaker

Picture of make the diaphragm of the speaker
take the card board and cut a small piece of attach the voice coil to it using glue

Step 6: Make the base

Picture of make the base
now take the card board and cut a piece from it which is slightly bigger than the using glue glue the magnets to its middle

Step 7: Make the suspention part 1

Picture of make the suspention part 1
take the buiseness cards and fold them into a shape like  W.
aadhavan gs2 months ago

can we use ordinary magnet instered of neo magnet

argha halder (author)  aadhavan gs2 months ago

Yes of course! You could use any magnet you want, just make sure they are powerful.


thanks for suggestion....... and I will keep my years open...........
i have headphone with me...... when I opened its out-cover of wire then there were three wires of orange, red and green.... please tell which wire to join which end??? especially that which wires will be joined with one terminal only....
argha halder (author)  Rajat Uppal1 year ago
take speaker from any toy or such headphone jack to the mobile and play a song,now take the three wires from the headphone jack and touch two of them to the terminals of the speaker each time.if you attach the right wires to the speaker then you may hear the song in the toy .then these two wire is the right attach the wire to your handmade speaker and hear the music!the poles of the wire how you attach does not matter.because i dont get wires with colour in my headphone i cant tell exactly which colour.if you dont have external speakers then use your handmade one.but keep your years open because the sound will be faint.
armstk1801 year ago
Very nice job man 1

Good luck
also i vote you :)
argha halder (author)  armstk1801 year ago
thank you very muchhhhhhhhh!
argha halder (author) 1 year ago
oh! and if you like it dont forget to vote me.
cortes961 year ago
That's so cool!
argha halder (author)  cortes961 year ago