Instructables

Domo Mini Speaker ^.^ (Card-Singing Speakers put to usefulness)

Picture of Domo Mini Speaker ^.^ (Card-Singing Speakers put to usefulness)
Ever wanted a cheap mini speaker? A small speaker that you could bring around with you? Maybe like a mini-cube around 3" speaker? Well my friends and I wanted just that. We wanted to create a speaker for ourselves that was small enough to carry around. After all we love music and with this mini speaker we can enjoy our music anywhere. Also with a speaker we do not have to plug our ears all day long and have those sound waves hit directly in our ears and decreasing our hearing.
 
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Step 1: First Things First: Gather your materials

Picture of First Things First: Gather your materials
solder.jpg
Materials that are needed:
- Electrical Tape
- Speakers (taken out from singing cards)
- Thicker wires (recommended but optional)
- Earphones or Headphones (preferably not broken ones, especially if you are making two speakers)
- Paper to create the box

Tools:
- Scissors
- Wire-cutter/ Wire-stripper (A scissor or razor would do as well)
- Solder (needed if using alternate wiring) or Lighter

Step 2: Speakers

Picture of Speakers
Buy a cheap singing card. Rip the right side to reveal the speaker. Use a scissor to cut the wires connected to the memory/sound chip. Take the speaker off of the tape that is holding it down. Pull the wires off of the speakers. 

Step 3: Re-wiring the Speaker

Picture of Re-wiring the Speaker
Cut the amount of wire you need to attach to the speaker. Strip the ends of the wire so that there will be no insulator at the ends for better conduction of electricity. Solder the wire on to the back of the speaker. Make sure to solder it where the wires were before you ripped it off (it should be the two spots on the most outside. The first and the fourth.). 

Step 4: Time for the Earphones :)

Picture of Time for the Earphones :)
Cut the earphone pieces off. Use a wire stripper to strip off the rubber surrounding the wire. Use a lighter and burn the wire for better conduction. 
zzebrowski5 months ago
Thanks, worked for me. :-)
mdog931 year ago
This will never be very loud- only the volume of headphones which when not in close proximity to your ear isn't very loud. This is because the signal is not amplified.

You can quite easily and cheaply make a simple amplification circuit if you wanted to and add this between the cable and the speaker.

The lm386n-1 chip is a good way to go with this- just search that into instructables and there's loads of amps out there, mainly guitar amps but if you set the gain low, they will work just fine as mp3 speakers.
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