Underwater Phones Needed for Aquapulse

[divewrecks]

Has anyone had experience using underwater headphones (other than Aquascan brand) on an Aquapulse AQ1B machine? I tried the Gray Ghost headphones. I don't remember what the impedences I measured were, but the low was too low and the high was way to high. The Aquascan ones are said to be around 15 ohm, so I am looking for something close to that. Any help appreciated. I would consider the Aquascan brand ones, but they are $150.

Stan

 

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[volvomad]

The Aquapulse headphones have a transformer indide to boost the voltage. What you measure across the terminals is the transformer