"Mike Rivers"
Phil Allison

Get a length of insulated wire, connect the ends to pins 2 and 3 of
an
XLR, plug it into a mic pre and try the effect of having an open loop,
closed loop and then twisted tightly all along its length when held close
proximity to an AC power transformer.


Once again, the Pretentious Pundit of Pro Audio changes the subject
when he's caught in a misconception.


** More utter, pig ignorant bull**** from the Know Nothing Parrot.


This is an excellent
demonstration of the principle of loop area (again, I recommend Steve
Lampen's book) but it doesn't tell you anything about the performance
of a differential amplifier.

Using twisted wire is one technique of reducing the common mode
voltage applied to the inputs of a differential amplifier.


** The imbecile cannot distinguish common mode from differential mode.


Connecting a loop of wire between the two terminals of a differential
input and inducing current in the wire is the perfect test case, and,
in fact, is a good test of the common mode rejection of the input.


** The induced *voltage* is ***differential*** - like the wanted
signal.



I would just ignore the snide remarks and leave his discussion except
that I hate to see someone with the right information be put down with
irrelevant and inaccurate responses, and more important, that the person
asking a legitimate question gets misled if he got disgusted with the
in-fighting
and stops reading the thread.



** The only "fighting" going on originates from the poisonous keyboard of
Mike Rivers.

The man is nothing but a charlatan hell bent on deceiving people.




.............. Phil