Plasma/massless headphones

This might sound totally crazy, but a friend of mine and I, are looking to make "plasma" headphones.  I am not sure who has seen plasma speakers, but they look pretty cool, and we want to make a headphone version of them.  I was just wondering if anyone has any ideas for them.  BTW, I know the dangers involved in creating such a contraption.  Is it a good idea, probably not.  Doesn't matter to me, I want to create them for the hell of it, not for much of a legitimate use.  Although, if they will work legitimately, all the better.

Thanks everyone for the ideas.  I had never seen anyone build something like this before, so thanks for the links to them.  There is one thing though, even if they take 90 watts, just a tiny fraction of it is actually going to produce sound.  Trust me though, this isn't the first time we have used dangerous amounts of electricity for crazy things.  As for the ozone problem, really, how much ozone can these things put out?  I will definitely try these outside first, but I am really not sure that on headphones it could create a dangerous amount of ozone.

Quote:

Originally Posted by jamesbobo007 

This is a neat project, might be a starting point ?

 

http://teravolt.org/Plasma_Speaker_2.htm

 

Thanks.  This is an excellent starting point.  BTW, for those wondering, this friend of mine wouldn't be caught dead in any sort of audiophile forum.  In fact, he hates high-end audio in general.  He does however LOVE high voltage electronics.  There is a bit of a silly attraction of high voltage electronics.  Anyway, I am going to college for computer engineering, so I do have a bit of experience in electronics like this.  When this thing is done, I will definitely review it next to another pair of headphones.  I will also take plenty of pictures of the build process.