At 6:57 PM -0600 4/20/06, Bruce Wilson wrote:
> > I estimate the EIN for the HiMD mic pres between -125dBu and -128dBu.
>> For reference, this is almost quiet enough to amplify the signals
>> from Rode NT1-A's (6dBA self-noise) without adding noise. (I hear
>> the noise to be about 50% from the NT1-A mics and 50% from the HiMD
>> pre).
>
>Dead on for low sensitivity (you are using a NHF900 as I recall, and it ma=
y
>have a better preamp than my NHF800), but how are you getting 48v mics to
>work with a 1.5v PIP minidisk? Are you using just a phantom power box, or =
a
>preamp (I think I recall that you have a Rolls preamp)? If it's a preamp,
>then your estimation is for the preamp stage, not the minidisk.
As Aaron wrote, the Rolls is $70 a portable phantom power supply, not a pre=
amp.
My estimate is with high-sensitivity setting for an NH-900
(correlated from A/B comparisons with the 722 and MP2 and a number of
mics). The NH-900, 910 and RH-10 seem to have indistinguishable mic
pre performance. I don't think I've heard from a recordist who has
tested a NHF-800 against another HiMD model. I think Curt has a 800.
That we could check that in Star Valley, though not when the tree
frogs are going. Rob D.
>Bruce
>
>
>
>
>"Microphones are not ears,
>Loudspeakers are not birds,
>A listening room is not nature."
>Klas Strandberg
>Yahoo! Groups Links
>
>
>
>
--
Rob Danielson
Film Department
University of Wisconsin-Milwaukee
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