Threw these together using a drilled out CTX connector, iphone waterproof short plug, waterproof earbuds and some epoxy. Got one coat of epoxy done. Gonna dip the connections in some flexi seal. Just temporary until I get the part that goes inside my amphenol connector to finish modding a pair of OBN Skullies. Earbuds were pretty loud. Have to wear a buff to hold them in the ears in our waves I think. FWIW the plug on the Equinox is waterproof so if you get a drip you just rinse it out. Should be good connection on this one though. Bought 4 of the iphone plugs. Ground one way down to be sure you can make these small enough to insert into the CTX connector sleeve.