ifier
Hugo--
Thanks for the background info. Just looking at
it practically, an external mic pre amp that is
-118dBU EIN A will perform fine with those mics
in terms of noise. You can compute this yourself
with chart #3 on this page=20
http://www.rane.com/note148.html .I added -8 dBu
to the -110 derived from the mkh 30's 14dB(A)
self noise and 25 mV/Pa sensitivity to create a
1dB noise "buffer" for the preamp.
I believe all the preamps you mention are -118
dBu or better (higher negative numbers are
better), you can check their specs to be sure.
Some people feel the sound quality is very
different between high quality preamps. In the
A/B tests I've done between good pres, I came to
the conclusion that subtle differences in my
"matched" reference monitor speakers are probably
more noticeable. But that's my opinion. The Sony
NH-900 recorder's internal mic pre I've been
testing is in the neighborhood of -118 EIN.
Its a shame to have to spend $800 or more to get
acceptable noise performance. You shouldn't get a
bunch of hiss when recording something as loud as
music. Did you consider taking it back to the
dealer with your good mics, turning up of the
record gain and evaluating it together? Maybe
its not working up to spec? Rob D.
=3D =3D =3D
At 3:48 AM +0000 8/16/05, robleshugodaniel wrote:
>Thanks Rob. I answer: really, I think the R4=B4s preamplifiers needs an
>external preamplifier. The hiss is clearly noticeable. I have a very
>good studio preamplifier (AC powered) , and I made comparisons with the
>R4 preamplifiers. The R4=B4s noise with the external pre is clearly
>reduced. In this case, I think, the R4 is usable in quiets ambients.
>
>I have MKHs Sennheiser mics. I=B4m interested in stereo recordings of
>solo songbirds (M-S), not surround.
>
>What battery powered preamplifiers are used between you, experienced in
>nature recordings ? Thanks. Hugo.
>
>
>--- In Rob Danielson <>
>wrote:
>
>> Do you feel that the R4's internal mic preamp is
>> not performing up to your needs somehow? Can you
>> describe the problem(s)? Can you tell us a
>> little more about the type of nature recordings
>> your interested in making? Would you use 2 mics
>> for stereo, 4 mics for surround or maybe both?
>> What brand(s) and model(s) of mics, if any, do
>> you already own or plan to purchase? Rob D.
>
>
>
>
>
>"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
[Non-text portions of this message have been removed]
________________________________________________________________________
________________________________________________________________________
"Microphones are not ears,
Loudspeakers are not birds,
A listening room is not nature."
Klas Strandberg
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