I have a couple questions regarding piezo discs. I have done research on resonant impedance and somewhat understand it. What I am still confused on is whether or not the MAX resonant impedance would affect output frequency or volume? Below is a graph that I see a lot. To note, I am not dealing with oscillator controlled piezos, but rather two terminal discs instead.
If I have two piezos with identical specs other than the max resonant impedance and a slight difference (20.2 mm vs 19.7 mm for a 0.5 mm difference between them) in diameter of the electrode, and if they are driven by exactly identical circuits, how is the output sound affected?
I have come across another term "average resonant impedance" which I am much less familiar with. any info on this term is also helpful. Thanks!
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