A mini microphone can be created out of old headphones. Speakers function similarly to dynamic-type microphones; instead of taking an electrical current and converting it to magnetic vibration, you will be turning sound into a magnetic vibration, which will turn into electrical current and can be recorded.
- Skill level:
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Things you need
- Old headphones
- Thin speaker wire
- Wire stripper
- Electrical tape
- 1/8-inch mono male adaptor
- Soldering iron
Pull one earphone off your headphones. If necessary, snap it off until you have one small speaker in your hand.
Cut the wire connected to the speaker about 5 inches from the speaker.
Strip away the protective rubber coating. This should expose one copper wire and one white wire.
Strip the white wire. You should now have two copper wires.
Strip both wires on your thin speaker wire on both sides. About 1 inch of wire should be exposed.
Twist the speaker wire with the white stripe running along it around the white wire coming from the speaker.
Wrap the twisted wires with 1 inch of electrical tape.
Repeat this process with the remaining wire.
Unscrew the body of your 1/8-inch male adaptor. This should reveal two contacts.
Solder the two remaining speaker wires to these contacts. Melt a tiny puddle of solder into the contacts and stick each wire into the hot puddle of melted solder. The white-striped wire should be soldered to the longest contact.
Plug this new microphone into your tape recorder's microphone input and speak into it to test.
Tips and warnings
- Slide the body of your 1/8th-inch male adaptor down the wire before soldering so that it may be screwed back on afterwards.
- It is illegal to record your conversations in some states without receiving permission from the person you are conversing with first. Check your local state laws before recording other people.
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