I studied the video and jotted down simple steps for her, on how to do it and where to find the raw material for making the speaker. The same information is now available for you, also I have tried to explain some Science behind the scene (which is not explained in that video)
I am sure your kid will also love making something out of household items that are readily available at home.
How the Speaker Produce Sound?
- Sound is produced by conversion of Electrical Energy into Sound Energy.
- Magnets are subjected to variable magnetic field generated with pulsating current passed through a shielded coil, which in tern makes Magnet vibrate generating a “PUSH/PULL” action of Air column, thus producing sound waves.
Material required to make a DIY Home-made Speaker:
- Enameled copper wire
You can find it from a old transformer lying into your garage for some reasons or buy from market.
- Plastic Bottle
You need to cut the Plastic Bottle as shown in the video and remove the threaded portion too.
- Fixing liquid like Super Glue
You need to wind the wire around and fix with the bottle head, so as the Magnet needs to be fixed using some fixing agent
- Wire Cutter
Needed to cut of wire end connections of 3.5 mm jack cable
- 3.5 mm Jack cable
You can take any old 3.5 mm connection cable from your outdated headphone
Making Speaker at Home Step-by-Step Guide:
- Take a Plastic Bottle, Cut front cone of Bottle which is going to act as blow horn of your Speaker
- Grind off the threads on bottle neck, this is to prepare a base to wind enameled copper wire. I got the enameled copper wire from transformer winding from my old radio set, Click here to see how the transformer in my radio looks like.
- Wind enameled copper wire over the neck, you can give as much number of turns as you can, maybe around 50! Make sure that enamel on the copper wire is not damaged, else it might short the wire resulting into non operation of your speaker
- Keep the Two ends of copper wire apart, since these ends are going to be used to connect to 3.5 mm jack output of your mobile phone.
- Apply some super glue onto the winding, so that it does not fall apart during operation due to vibration.
- Now its time to fit a Neodymium Magnet at the bottle mouth. Here also use the Super Glue to keep the magnet fixed into the bottle mouth hole.
I found Neodymium Magnet Mount Hook, which can be reused as Towel holder or Key holder after your speaker experiment is over.
- Now its time to connect the Copper wires to 3.5 mm jack wires. For this you need to remove the enamel from wire, which can be simply done by lighter flames in a second. Removing enamel will enable wired to conduct current across.
- Take a 3.5 mm jack wire, maybe from your old wired headphones which are outdated or non-working condition. When you cut the wires, you will get three small wired coming out, generally colored White, Blue & Red. Keep the White wire and cut either of Red or Blue wire. This will connect one of the channels to our Speaker. In case you wish to make Stereo system, then you can keep all three wires and connect White + Blue and White + Red wired to two speakers.
- The 3.5 mm Jack wire will now pass through the bottle plastic cap (through small hole) and get connected to the Copper wire on bottle neck. You can solder the wired together to get firm connection.
- Ends can be protected from short circuit using simple PVC tubes, or using an electrical insulation tape.
- The cap also can be Glued with small quantity of glue
- All Done. Your Speaker is ready to be tasted.
- Connect the 3.5 mm jack to your mobile and enjoy the Music 🙂
Note : Remember … The Speaker is an experiment and not a BOSE or JBL speaker 😛 its basic DIY Speaker project, made as Summer project, to understand basic principals of Sound, your kid will amazed to see it working. It will be surely a fun listening to this bottle speaker.
Simply go through the Video below which alongwith above instructions will help you making your homemade speaker.