"David Grant" wrote in message

"Arny Krueger" wrote in message
...
"David Grant" wrote in message



If anyone knows of any resources that would help me, I'd appreciate
it.

I think a reasonable first step would be to figure out how to
reliably and relevantly determine the effectiveness and performance
of a mic preamp. Both technical tests and listening tests seem
relevant. Tests with various microphones and microphone techniques
and/or simulations of them seem relevant.

Then, apply those evaluation techniques to a number of commercial
products at various price levels, as well as various technological
implementations (tubes, discrete solid state, ICs).

I assume I'd need to know how the commercial products I'm comparing
are designed for this to be of most benefit. Are there schematics
available somewhere for commercial units (I wouldn't expect there to
be) or is it practical to reverse engineer their design?

The schematic publication policies of equipment manufacturers range from
high levels of secrecy to easy disclosure .

Here's some examples of easy disclosu

http://www.johnhardyco.com/pdf/990.pdf

http://www.rane.com/pdf/ms1bsch.pdf

http://www.rane.com/pdf/dms22sch.pdf

http://www.rolls.com/data/mp13man.pdf

You've got google, right?

;-)