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Re: Hydrophone cables--formerly "extension cables"

Subject: Re: Hydrophone cables--formerly "extension cables"
From: "Mike Rooke" picnet2
Date: Thu Jan 28, 2010 10:52 am ((PST))
If those are a piezo on the end of a cable, the high gain from the recorder 
will also amplify any capacitance changes in the cable - the piezo has a very 
high impedance. bottom line is the cable becomes part of the pickup system 
which isnt very desirable. Better option is to buffer the piezo and include all 
the phantom power IN the hydrophone body itself. 


--- In  "Grant Finlay" <> wrote:
> --- In  Robb Nichols <Robb@> wrote:
> > Grant, Are you saying that the cable is microphonic, or that the 
> > hydrophone is picking up sounds in air? 
> The cable is microphonic, just looking for a simple solution..
>  > It might be helpful to know what hydrophone you are using and how your 
> > XLR adapter is wired.
> > 
> > Regards, Robb
> they're from jez riley French @
> (I'm very happy with them otherwise, just would like to fix this small issue.)
> Wired:
> pin 2 +
> pin 1&3 jumper
> The cables were used both coiled up or laid out flat, if that has any 
> influence.
> Regards, Grant.

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