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audio amp lm386n- circuit suggestions

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grandislesail

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I am trying to build a hydrophone using lm386n-400mw chip. I have various condensor mic elements and piezoelectric buzzers to use as input mics. The hydrophone will be used for dolphin (high end of the audio spectrum) sounds. Can someone help me with a circuit hopefully using the piezo elements, as they have much more surface area for sound pickup and may be easier to waterproof.
 
No idea, please provide more detail.

How deep do you plan to emerse this?

What's the exact frequency range?

Are these sounds simple waveforms or complex?

What amplitude?

Haven't you asked a similar question before?
https://www.electro-tech-online.com/threads/hydrophone-ideas-needed.23344/

You should've edited you post to include this extra detail. Apart from annoying others multiple threads don't help you or the people who are trying to help to.
 
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