[sdiy] How do reverb tanks work?

[John Mahoney]

At 04:26 PM 11/24/2006, JH. wrote:
>I just learned a few days ago, that the Reverb of Farfisa Compact 
>Organs was built from two phono cartridges (one as a driver, one as 
>pickup, with a spring in between.) How cool is that !?!

I think that means they are "ceramic" cartridges, which I believe is 
another way of saying "piezo elements". For whatever that's worth.
--
john