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Jeff in Pa
Does the normal headphone inlet where you plug in your normal headphones, is there a "Plug" of some kind that would go into it when you want to dunk the unit. Right now it would obviously fill with water and if I lay it down in 2 feet of water must I first plug that hole?
Thanks
If you are referring to the standard 1/4" adapter module jack...it cannot be made waterproof.
You must first remove the 1/4" adapter module....in the back of the adapter is a black plastic cap that screws into the (now visible) waterproof headphone jack to seal it.
However, people often mistake the 1/4" brass threads that the headphone adapter screws into, as a headphone jack.
For clarity, check the pics on this minelab knowledge base article:
https://www.minelab.com/__files/f/93182/CTX-3030-Audio-Options-KBA_21-2.pdf
mike