I mean, the noise figures below is what you get with a reasonable
standard design of, say, Linear Technology LT1115 or some HQ double
transistor. These circuits are expensive though, compared to standard
components and I wonder how many manufacturers that will spend that money
on a simple amp for Plug In Power?
Klas.
which of these are stereo, providing plug in power in a minijack?
Klas.
At 01:15 2006-09-16, you wrote:
>"Bruce Wilson" wrote:
> > For practical preamps...the noise limit
> > seems to be about -125 dBu...
>
>That matches the manufacturers' ratings of the
>noise floor in the pocketable preamps I've been
>looking at:
>
>Sound Professionals SP-Preamp ($180)..... -126 dBu
>Sound Devices MP-1 ($300) ............... -126 dBu
>Glensound GS-MCA001 ($440) .............. -127 dBu
>Sound Devices MixPre ($670) ............. -126 dBu
>Aerco MP2 ($750) ........................ -116 dBu
>Wendt X3 ($875) ......................... -130 dBu
>
>It seems likely that none of these devices will
>contribute audible noise to a recording made under
>typical field conditions.
>
>Three manufacturers don't specify the dB scale,
>so these figures may not be directly comparable:
>
>Chris Church ST-9000 ($150)............. -125 dB
>Felmicamps Battery ($200) ............... -120 dB
>Sonosax SX-M2 ($1100) ................... -129 dB
>
>Chances are these preamps will be very quiet, too.
>
>--oryoki
>
>
>
>
>
>
>"Microphones are not ears,
>Loudspeakers are not birds,
>A listening room is not nature."
>Klas Strandberg
>Yahoo! Groups Links
>
>
>
>
>
>
>
Telinga Microphones, Botarbo,
S-748 96 Tobo, Sweden.
Phone & fax int + 295 310 01
email:
website: www.telinga.com
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