How to make a simple functioning loudspeaker?
The loudspeaker must be very simple to make,and it must include the concept of physics or electromagnetism to be more specified…
OK, stick a rubber sheet over a metal hoop.
Attach a magnet (Permanent) to it’s center.
Secure this to a unit of some kind, a wooden box would suffice with a hole cut in it for the "Speaker" section you have made.
Now fix a coil of wire (50 coils minimum, thin wire), behind the magnet, not touching it but close enough to attract it when it becomes an electromagnet.
You now need to get a current of electricity to flow through your coil, 12volts should be more than enough, and it should oscillate to the sound you are producing, use a sine wave generator via an amplifier.
Beware the coil may get hot.
If all works it should attract and repel the permanent magnet and make the rubber sheet vibrate. It is unlikely to work for music but it should be able to produce a tone.
February 8th, 2010 at 2:05 am
OK, stick a rubber sheet over a metal hoop.
Attach a magnet (Permanent) to it’s center.
Secure this to a unit of some kind, a wooden box would suffice with a hole cut in it for the "Speaker" section you have made.
Now fix a coil of wire (50 coils minimum, thin wire), behind the magnet, not touching it but close enough to attract it when it becomes an electromagnet.
You now need to get a current of electricity to flow through your coil, 12volts should be more than enough, and it should oscillate to the sound you are producing, use a sine wave generator via an amplifier.
Beware the coil may get hot.
If all works it should attract and repel the permanent magnet and make the rubber sheet vibrate. It is unlikely to work for music but it should be able to produce a tone.
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