Instructables
Picture of Portable Speaker in a film canister
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This Instructable is for a quick and easy portable speaker made from an old headset and a film canister.

While the sound level that comes from a speaker headset is not exceptional (as it is designed to be next to your ear), they still make for a good little speaker for an old iPod or mp3 player without its own speaker.

The speaker fits easily in your pocket and is a nice little companion for your iPod or mp3 player on those days out and about.
 
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Step 1: Collect The Parts and Tools

Picture of Collect The Parts and Tools
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Parts Used:

1x Headset (I used one out of a phone headset which also had a microphone)
1x Film Canister

Tools Used:

Dremel / rotary cutting tool (or you could use a hand saw if you have neither of the before mentioned)
Selleys Knead It multi-purpose putty (or similar) OR bluetak

Step 2: Dismantling the Headset

Picture of Dismantling the Headset
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1. Take apart the headset, removing the head band as well as the microphone if your headset has one.  

2. Remove the foam over the speaker

3. Since my headset had a microphone, I had to remove the microphone cable which was attached to the speaker cable so I was just left with the headset speaker, cable and 3.5mm jack

4. Cut the actual speaker out of the plastic which surrounds it using a rotary cutting tool or a hand saw.