3. Re: Phantom power noise - again!!!

["Raimund Specht" animalsounds]

> 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.

Dan Dugan wrote:
> 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.

Yes, of course. I just tried to explain to Klas that his unbalanced
microphone output (where pin 3 is not connected to the usual series
resistor) is not able to tolerate any potential phantom power noise.
The debate started here:
http://tech.groups.yahoo.com/group/naturerecordists/message/27021

Raimund