At 20:31 2007-03-22, you wrote:
>Raimund Specht wrote:
>
> >Yes, that impedance matching will make sure that the disturbances
> >entering in the cable will be compensated. However, in this way, the
> >noise originating from the phantom power will only be present on pin
> >2.
>
>If you're talking about noise from the phantom power source in the
>recorder, it will be applied equally (depending on the accuracy of
>the series resistors) to pins 2 and 3, assuming equal impedance
>(which is why the dummy network on pin 3 of the mic) and will be
>canceled by the balance of the mic preamp.
>
>-Dan Dugan
I would like to deny this, but that discussion gets too technical.
See my message where I equal phantom noise with RF noise. Lots of
frequencies which are intermodulated and under certain circumstances
detected by PN transitions and diods and rectified into audible
noise. The start of such a problem is always (??) an unstable chopper
with varying pulse-width.
Klas.
>"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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