Plasma speakers anyone with info?

Amfibius' information coincides perfectly with mine. I would have a source for the a-Capella tweeters in Europe. No commercial interest on my side. If you are interested drop me a mail and I'll give you a contact address.

I heard the Plasma I at a hotel suite at CES in 1979. They sounded incredible - but the technology is what mesmerized me.

Best part of this was listening in on a conversation between Dr Hill and Dr. Oskar Heil - the inventor of the FET and the Heil Air Motion Transformer. Dr Heil showed up just after me, and the 3 of us listened for a while - Heil's first time listening to them or meeting Dr. Hill. The next hour was a long passionate conversation on the physics of sound from 2 of the pioneers. A pretty good day for a 19 y.o. kid.

It was Heil Plasmatronics. They burned a helium. $7k a pair in 1976. I actually heard them at a store called Absolute Audio in Santa Ana. Fabulous sound. The best speakersvI have ever heard. No cones to produce sound above 600 hz. Hence no distortion from lag time of paper cones . It was strange watching a flickering purple gas emit music. Impressive. The inventor is a laser physicist. They took them off the market as they posed a slight health risk.