I'm an oceanographer looking for an underwater speaker that I can hang over the side of a ship and transmit acoustic signals. What is the maximum working depth (or pressure) for your AQ339 Aquatic Pool Speaker?

The manufacturer does not recommend using the AQ339 speaker in ocean water as it isn't designed for salt water use and is only sound tested to a depth of 10 feet.  We do carry Lubell underwater speakers and their LL916C 180dB Professional Underwater Speaker can be used in ocean water.
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