Hydrophone tests at the mouth of San Gabriel River

I had experimented with contact mics and water before, sort of quasi-hydrophone. It worked ok as long there was some sort of current or splashing, running water, etc. The results were not great, even after upgrading my personal contact mics to a balanced design using dual piezos. Enter the amazing “Let’s build some world-class hydrophones” … Read more

POTAR Design Devices