BEM
Contributor
I have an Amphibico (TR5N, 1992 era) aluminum housing and a Sony (TR81, 1992 era) Hi8 video camera.
The housing has an external microphone that plugs into the ext. mic. receptacle on the camera. I get audio recorded properly while on the surface, but when I get to about five feet submerged, the sound disappears. What you hear is a loud frequency change from about 100 Hz up to 20K Hz, within one second and then no more sound (on playback.) Even when I get back to the surface, no sound is recorded.
My guess is that the external microphone diaphragm is being pushed in by the pressure and will not move after that. It works again (with the same results) the next time its used.
The camera records audio with no problems. I dont plug the ext microphone into the camera, let it record sound through the housing (not great, but I get some audio.)
Any suggestions, Amphibico does not have replacement mics for this model.
Other than that, the housing is rock solid and really well built (no leaks so far knock wood!)
The housing has an external microphone that plugs into the ext. mic. receptacle on the camera. I get audio recorded properly while on the surface, but when I get to about five feet submerged, the sound disappears. What you hear is a loud frequency change from about 100 Hz up to 20K Hz, within one second and then no more sound (on playback.) Even when I get back to the surface, no sound is recorded.
My guess is that the external microphone diaphragm is being pushed in by the pressure and will not move after that. It works again (with the same results) the next time its used.
The camera records audio with no problems. I dont plug the ext microphone into the camera, let it record sound through the housing (not great, but I get some audio.)
Any suggestions, Amphibico does not have replacement mics for this model.
Other than that, the housing is rock solid and really well built (no leaks so far knock wood!)
