[Scott Dorsey]

Chel van Gennip wrote:

A good condensor microphone, with an output impedance of about 50 0hm,
should not be sensitive for different loadings in the 5k ohm range.
Especially if the loading is purely resistive.

This is easy to do with a transformerless microphone. Not impossible to
do with a transformer-output one, but not trivial.

Other microphones should be designed to give the best results with a pure
resistive load.

Unfortunately this has not been the case for many microphones made in the
past, which were designed to go into slightly inductive transformer loads.
Since that includes things like the SM-57, the most popular microphone in
the world, the large installed base of microphones that _do_ want to see
such loads is a major bar to the implementation of a new standard.

A preamp should have a flat frequency response.

If a setup is based on strange loadings and a not flat frequency
response, the result is based on a lottery.

And that's what makes audio fun!
--scott
--
"C'est un Nagra. C'est suisse, et tres, tres precis."