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Original Message

RE: I did an interesting experiment...

Posted by rivervalley817 on February 13, 2021 at 13:53:59:

I know ... that's why I said 'effect' despite being inaccurate as hell

you're right of course, the LP actually functioned as a diaphragm, the needle as the element ... far more technically accurate, my bad

of course PZM's rely on piezoelectric excitation to work yet his LP was responding to sound pressure and focusing it in [towards?] a narrow gap

anyway, glad that's cleared up thanks!