These are serious speakers , the part where they emit 03 gas is scary .


http://cgi.ebay.com/HILL-PLASMATRONICS-pr-...tem150135097641

Cool, I always thought that Magnat was the only one who has sold plasma speaker units. But there's even a DIY page at http://www.plasmatweeter.de

Yes, ozone is toxic in concentrations greater than 0.1ppm. So, these should not be operated in small rooms

Thanks to patents these speakers are so rare.

Wish I had $4000 to throw around, I'd definitely pick them up.

The description was fantastic , not only do these things weigh 200lbs or so , but you also have to keep getting refills of helium .

[quote]Some people claim they are sensitive to O3 in a closed room and it irritates their throat ,others find it fresh smelling or don't notice it!..

Small price to pay

Actually, Ozone molecules do not have a characteristic smell ... what you typically might smell around an older laser printer or these tweeters is nitrous oxide that is there because ozone is highly reactive and thus easily oxidizes the nitrogen in its surrounding atmosphere ...

Nitrous oxide does indeed have a 'sharp' smell ...

I believe that it is nitric oxide that has a sharp odor, not nitrous. I have had nitrous oxide ("laughing gas") at the dentist and it had no odor at all.

Ozone, as I recall, does in fact have a sort of sweet odor.

You're right about the nitric oxide ... and from what I know, most people won't smell ozone below 0.1 and 0.4 ppm ... above this concentration, the human nose gets used to the odor very fast and won't recognize it any more.