Re: Does PIP increase LF noise?

["Raimund Specht" animalsounds]

Klas Strandberg <> wrote:

> Like I said, I would have liked to know which load he used at the
> input, this guy who presented the curves about increased noise.
> It is so easy to make incorrect measurements. Using a load resistor
> would not even be considered theoretically "wrong". Therefore I want
> to HEAR such a difference.
> I can even imagine that the current regulator can make different
> noise at different loads! If one fet needs 0,25 mA and you parallel
> two of them, it is 0,5 mA and another situation.

Yes, the 150 ohm termination resistor that I used in my tests is surely not=
 appropriate for fairly evaluating the microphone inputs in combination wit=
h a PIP microphone. I guess that a resistor of about 5 or 10 kohms would be=
 a better choice for this special purpose.

Regards,
Raimund