naturerecordists
[Top] [All Lists]

Re: Sharp MD glitch

Subject: Re: Sharp MD glitch
From: Dan Dugan <>
Date: Sun, 21 Aug 2005 13:14:33 -0700
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


________________________________________________________________________
________________________________________________________________________

<Prev in Thread] Current Thread [Next in Thread>
Admin

The University of NSW School of Computer and Engineering takes no responsibility for the contents of this archive. It is purely a compilation of material sent by many people to the naturerecordists mailing list. It has not been checked for accuracy nor its content verified in any way. If you wish to get material removed from the archive or have other queries about the archive e-mail Andrew Taylor at this address: andrewt@cse.unsw.EDU.AU