Ocean Reef GSM Cube 3, Owner'S Manual

Page: 8 / 20

GSM CUBE³ manual rel.1.0
8
Installing the microphone
The CUBE³ uses a dynamic microphone,
”
D-Mic
” encapsulated and protected by a
hydrophobic membrane.
The microphone allows dependable clear
reproduction of the human voice. It
removes unnecessary noise such as the noise of bubbles being
exhaled from the mask.
The D-Mic uses a hydrophobic membrane that allows air to pass
through while protecting the microphone from water. This
membrane also reduces the “muffling” effect allowing a phonic
performance that is very high.
Another characteristic of the hydrophobic membrane is its
mechanical strength. The D-Mic, shown in figure 4, is fitted with a
membrane that is designed to handle pressure of more than 14.7
PSI. If the membrane ruptures, the microphone will flood causing
transmission to cease. Remember, the Neptune masks are
designed to operate under “balanced” pressure. If the mask is
removed underwater the microphone WILL NOT suffer any damage.
However, continuing to dive WITHOUT the mask sealed on the face
the microphone may be damaged if the limits, indicated above, are
exceeded Iin relation to the depth at which the mask was removed.
Ascending must be done in accordance with the dive tables or dive
computer to avoid decompression problems. The communicator
and microphone should be rinsed with fresh water (immersed, not a
strong “jet” of water) after each dive and should be placed in a well
ventilated area that is not exposed to direct sunlight to dry.