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Thanks All for the replies. I have been thinking and testing a bit further and my thinking now is that the maximum SPL of the hydrophone may be reached here. Apparently the hydrophone has a '20dB integrated signal conditioning' included. I repeated the tests with a passive hydrophone and don't...

Hi All, Newbie here. I've been trying to measure the impact signal of solid objects on a hydrophone. I use a small ball and drop it from various heights onto the hydrophone. The higher the height, the larger the impact velocity of the ball will be and thus one may expect a stronger response of...