Dan,
I had a similar problem with my Sharp MD which you fixed with a piece
of tape that isolated the metallic sleeve of the 1/8" mini connector
from the metallicized case of the MD recorder.
--greg
--- In Dan Dugan <> wrote:
> Rob Danielson, you wrote,
>
> >In Len's critique of the M-Audio recorder's specs, he mentions the
> >challenge of running the 48 volt phantom supply to the mics on such a
> >low voltage. Some of the phantom supplies I tested with the NH-900
> >had less noise when operating on higher voltage. Does the MD-MS722
> >run on more voltage?
>
> It does, in fact. It has a 3.6V NiMh, which I suspect is a much
> harder (lower impedance) voltage source than the 280's 1.5V alkaline.
> But it could just as well be a shielding or power supply filtering
> deficiency. We nature recordists are as demanding as classical music
> recordists.
>
> >Sounds pretty pronounced if you're getting audible interruptions at
> >record level 10.
>
> Level MIC L 12. Just barely audible fitzing mixed with the mic noise.
> Quiet desert scene. Later takes (wind died down) at MIC L 17 had no
> problem, so it wasn't a problem of coupling to the mic preamp (if
> that were the case, it would get worse when gain was raised) but
> probably in the A/D converter.
>
> -Dan
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