1 Feb
2010
1 Feb
'10
5:02 p.m.
On Mon, Feb 01, 2010 at 09:00:31PM +0100, Jörn Nettingsmeier wrote:
if that means what i think it means (equivalent input
noise), and i'm
not totally out of touch with the state of preamp technology, i'd say
all but the 106, the 99 and the ? are bogus. and i'm not even sure about
the 106 :)
First of all, all these numbers should have a minus sign in
front of them, and for them to be informative at all I'd
want to know if they are dBu or dBV.
99 and 106 are *very bad* - how does one design a mic preamp
to be that bad ? Use a 714 wired as differential amplifier ?
Things start to be interesting around -125 dBV and below.
Figures in the below -125 dBV range require either a transformer
(big, expensive, heavy) or some quite nifty (again expensive)
input circuit design.
Ciao,
--
FA
O tu, che porte, correndo si ?
E guerra e morte !