My first thought was sand, but it proved to be too heavy and didn't look too good.
While rummaging through my closet, I found the perfect powder: Rock Polish.
This stuff looks like it's made of aluminum powder. and looks awesome in motion.
Be careful though, since big base hits can cause all of the powder to jump out of the speaker, and the stuff gets everywhere... as you can see in the pictures, I have everything in a big Tupperware box.
If you like my Instructables, Please consider donating to my Inventions Fund! Thanks!
Step 1: Set up your speakers
It's probably a good idea to hear-shrink all the wire connections if you're using the same powder as me, since the powder is conductive.
If you're working with a dual cone speaker, like my sub, you have three choices;
- wire the left channel to one and the right channel to the other
- wire both in parallel
- wire both in series