Where's the Navy guys ? What's the output of sonar sending unit? I know that's got to be way up there too //content.invisioncic.com/y282845/emoticons/smile.gif.1ebc41e1811405b213edfc4622c41e27.gif
I know pressure levels upwards of 220db are possible under water.
Hence why they won't let you fill your cabin with water for SPL competitions //content.invisioncic.com/y282845/emoticons/biggrin.gif.d71a5d36fcbab170f2364c9f2e3946cb.gif