At 9:47 AM -0800 3/8/07, Dan Dugan wrote:
> >So the noise I was hearing with the dynamic mics was that of the
>>Nagra 4.2's mic pre,.. Do you recall what this noise spec is with the
>>quieter pre option? On par with the better pres we are working with
>>today? Rob D.
>
>By "quieter pre option," I presume you mean the transformer-input
>dynamic preamp (QPSE-200-X0Y0)? The noise spec is -126 dBm
>A-weighted. Note that that is a power spec., not a voltage spec (dBm
>is re 1 milliwatt). Old-fashioned practice. Off the cuff I'd say good
>but probably a bit inferior to boutique preamps today.
>
>-Dan Dugan
Interesting. This does make me want to take listen again to some
dynamic mic-> QPSE-200 noise. I recall the noise as being
exceptionally hard to filter-- down in the spectrum with weaker top
end response overall as Curt indicated. There might be a curious
performance factor worth re-examining though. Rob D.
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