Portable Tennis Ball Speaker for Mp3 / Ipod With Amp

In this Instructable you will learn how to make a pair of tennis ball speakers.
These are very easy to make, it took me 15 minutes on my first ones.

WHAT YOU NEED;

9v battery
9v battery clip
a tennis ball
An amp taken out of computer speakers
http://www.instructables.com/id/Super-easy-to-make-portable-speakers-for-mp3ipod ( look at this for how get a small amp. The smaller the better)
Small box to fit in your small amp
Glue
an old set of headphones
2 speakers with a diameter of no more than 5 and a half centimeters
10 cm of velcro

Lets get started............................

Step 1: Open the tennis ball

Get your tennis ball and draw round it so it is in half.

Than take something such as a pen knife or stanley knife and carefully cut the tennis ball open.
You then have two halves of a tennis ball.

Comments

[genemat]

Where do you attach the battery to? My speaker amps are designed for household 120AC power, how do I get it to use a small DC battery?

We're trying to make speakers for a class science project. Thanks!

[duck_tape_]

You could but velcro or something around the cut edges of the tenis balls so then you can stick them together for when you are just carying them around, but not listning to them.

[chosenangelx]

isnt that what he did??? lol and does the tennis ball amplify the sound ???

[mattyuke]

If it has a slight hole in the back it means air can move behind the speaker. This makes it to appear louder. If you have ever taken a speaker out its cabinet it doesn't work as well but when you put it back in you get the full sound. This is because it moves the air.

So yes it does make a bit of a difference.

[mattyuke]

Ilikethe idea!!Thanks

[sc22]

where did you get the amp from ? did you get it out of pc speakers?

[mattyuke]

I got it out of a set of computer speakers and converted the power sorce to run off a battery.

Have a look at my instructable for more information

http://www.instructables.com/id/Super-easy-to-make-portable-speakers-for-mp3ipod/

thanks
matt

[(seabear)]

aweomeness

[mattyuke]

If you like it then please vote for it when the voting opens : )

[mattyuke]

Thanks

[C1337us]

The speakers could be glued in and the box made of something sturdier. But its still pretty cool.

[mattyuke]

I thought of that but that was the only box I could find lying around. Thanks

[Bartboy]

Nowdays, the term "portable" can be used for almost anything.

[mattyuke]

AND thats it

[mattyuke]

HOW??? is that not portable????? Its a tennis ball!!!!!!!!!!!!!!

[Bartboy]

It is.... but as I said, almost anything could be considered portable. You don't need to add it to the name....

[mattyuke]

Pocket sized then. Portable on your person.