At 9:35 AM -0800 3/7/07, Dan Dugan wrote:
>
>Typical correspondences:
>
>dBV/Pa Open Circuit mV
>-60 1.0
>-50 3.2 (hot dynamic mic)
>-40 10.0 (condensor mic)
> 0 1000.0 (1 Volt)
The rule of thumb I've come across in a few
places is 10mV/Pa being a reference minimum in
sensitivity for condenser mics if one is after
lower noise performance. Does this correspond
with your -40 dBV/Pa, Dan?
Curt:
>The CHARACTER and QUALITY of a condenser mic's
>self noise (not merely its level) is something
>worth considering when making evaluations.
Dan:
>Yes, a single number doesn't tell you the
>spectrum or the texture of the noise.
It would be interesting to include some of the
better dynamics in a test with condenser mics. I
used dynamics almost exclusively for years. I
recall the noise creeping down pretty low in the
spectrum with the RE-16 (1.4mV/Pa) and RE-20 (1.5
mV/Pa). The MD-221 that Umashankar speaks fondly
of seems to spec at 2 mV/Pa =B1 3 dB at 1 kHz,
nominal; the Beyer M-88 at 2.3 mV/Pa. Rob D.
--
Rob Danielson
Peck School of the Artsmics
University of Wisconsin-Milwaukee
http://www.uwm.edu/~type/audio-art-tech-gallery/
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