Re: Noiselevel with 150 ohm termination

["Walter Knapp" waltknapp]

Posted by: "Klas Strandberg"

> I would say that amps in general perform their best noise values at
> max gain, say 60 db.

The best sound out of mic preamps generally does not occur at max gain.
Generally the sweet spot is in the middle half of their gain adjust.

> Do you know of any simple trick to make a "silence chamber"??

There's plenty in the literature on making acoustic test chambers. There
are a number of companies that can supply the sound deadening material.
You can even buy the entire chamber ready made. Of course that
convenience is costly.

Walt