At 11:22 AM +1000 6/20/07, Paul Jacobson wrote:
>hi all,
>
>just curious if anyone knew what the actual maximum gain was on the=A0
>line in on the RH1? I've done some (very basic and possibly flawed)=A0
>testing using my laptop soundcard which roughly corresponds with the=A0
>gain testing done on www.wildlife-sound.org, in that unity gain is=A0
>located somewhere between rec level settings 21 and 22. The tests=A0
>I've done indicate that with record level set at 30 a -15dBu signal=A0
>is need to drive the metering to just under the point where the=A0
>"over" indicator lights. The testing on wildlife-sound showed a=A0
>signal of -13dBu was required to drive the meters to the same point.
>
>It's probably not that crucial to know what the exact figures are,=A0
>however I'm testing a home brew mic-pre amp and was trying to get a=A0
>reasonably accurate idea of EIN,
Check the list archive, this is pretty well researched & documented.
> which requires knowing maximum gain.
>
>While I've been playing round with my new preamp which has 66dB gain,=A0
>I've noticed that to get roughly matched levels (within about 0.9dB)=A0
>I need to set the external pre/line in combination at around 21/22=A0
>(ie near unity gain), and the rh1 internal preamp on hi and record=A0
>level to 30. This would indicate that the max gain on the RH1 mic=A0
>preamp is around 66dB, which tallies with the figures shown on=A0
>www.wildlife-sound.org.
>
>cheers
>Paul
I did a test a while back with mp2->line->NH900
and I found I could use anywhere from 20-30 with
virtually no negative noise affect. ~"24" is the
setting I typically use with line inputs. I
believe the maximum gain on the Hi-MD mic pre is
hotter than the mp2's-- in the neighborhood of
75dB (based on actual recorded output in relation
to a 722's published gain rating). Rob D.
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>"While a picture is worth a thousand words, a
>sound is worth a thousand pictures." R. Murray Schafer via Bernie Krause
>
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>
--
Rob Danielson
Peck School of the Arts
Department of Film
University of Wisconsin- Milwaukee
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