Sanderling
Member
Like many of you, when I bought my CTX it came with the Koss non waterproof headphones. I mistakenly thought that the screw cap at the back of the module would make it waterproof. Not so as pointed out in the manual and by others in the forum, the screw cap is merely a dust cap. So, what to do to make it waterproof? I do not intend to use the machine underwater, but did want protection from water intrusion if hit by a wave, caught in heavy rain, or if I accidentally dropped it in the surf. I wanted to be able to use the Koss phones with the wireless module without having to shell out more bucks for a waterproof pair. So I took the screw cap to my local hardware store and bought an O ring that fit snug under the Phillips head. I put a light coat of silicone grease in the ring and screwed it hand tight into the waterproof headphone connector. For added insurance I secured a rubber bib secured by a rubber band over the cap/connector. Hoping this cheap fix resolves the problem. I have not used it yet and welcome thoughts and comments.