I heard a set of Tolteque loudspeakers at CES about 1990 or so. They were enormous and I marveled at how much work it must have been to get them to Vegas from France and then how crazy much power was needed to make them play; IIRC they were using a pair of Mac MC-1000s and driving them pretty hard to get above conversation level. Of course they were full range, not just tweeters. There were large pressurized gas tanks in the room for the fuel for the speakers...
Plasma Tweeters - Do they still exist?
I remember reading decades ago about tweeters that use a plasma flame to emit high frequency audio. The obvious benefit: extremely low mass.
I do not recall how the plasma flame was generate and how exactly the flame was agitated with the sound signal (I assume plasma is magnetic and magnets are used).
I remember the obvious disadvantage was the high production of O3 (3 oxygen atoms) and its caciogenic tendency in high concentrations.
Just wondering if any are still around (you know, could leave the windows open when listening :-).
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- 7 posts total