Beethoven's ninth played on two tesla coils !!

[Nick]

I did build a gu81 VTTC some years back but not as a plasma speaker - I have built a class E solid state plasma speaker - not my design - it was an Eastern Voltage Research one running at 4MHz.

It sounded dire - very squeeky and hissy...

They also produce enormous amounts of ozone - I wouldn't make one today...

What design are you using?

I'll have a think about your idea...