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If the capacitance is also 1.5 nF, the resonance Q is unusually low.I didn't actually have that piezo till last Friday, and it is actually 41KHz and ~1.2K ohms.
If the capacitance is also 1.5 nF, the resonance Q is unusually low.
Using a higher power audio isn't a bad idea. You should be sure, however, that it's power bandwidth is above 41 kHz and that the output stage isn't two sensitive to inductive loads. An output series resistance as a precaution may be reasonable
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