This is my first instructable so I hope you like it!
Any cable with a 2.5mm jack on the end
Pair of Sony Ericsson speakers (I used the MPS-60)
Scissors (or wire strippers)
A lighter or matches.
Soldering iron (optional)
I would like to mention at this point that this instructable was produced a long time ago now, my skills are far superior to those displayed within the instructable. I might later upload an instructable relating to small portable speakers with a built in amp (3v button cell maybe?)
Step 1: Cutting the Speakers
Unscrew the casing for the speakers, and cut the wires connecting them to the PCB (I believe this is an Amp, so I'd recommend you buy a small Amp later.)
Now get your scissors and and carefully strip the insulation from the outside of thecable leading to the speaker, make sure not to cut the cable, then cut the inner part of the insulation and seperate the two, now stripped, wires. (Note: this can be done much better with wire cutters or a stanley knife.)
Step 2: Getting the jack.
If the wires are coloured go and find a lighter, or matches and melt the enamel, careful not to burn the rest of the cable.
Step 3: Connecting the speaker to the jack.
Once you have found which cable goes to what decide how you are going to connect them together: Soldering (neater and more reliable) or simple electrical tape (quicker).
for this i'm assuming you already know how to use a soldering iron.
While the iron is heating up, connect the wires together and test that connection to make sure it works, once the iron has heated up, just do a quick joint on each connection and leave it, and the iron, to cool.
Once they have cooled use your electrical tape to separate the two before taping the now insulated wires together.
put as much pressure as you can on the wires whilst taping them together, make sure each of the three wires are seperate and that the speaker is connected to at least two and sound IS coming out. This can be reversed if it doesn't work.