[Phil Allison[_4_]]

Scott Dorsey wrote:

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Since most of the mike preamp noise is at low frequencies,


** No way.

Its white noise so mostly high frequency.

The noise level is proportional to bandwidth.

Noise between 10kHz and 20kHz is equal to that at all lower frequencies.


if you design
it to roll everything off at 60 Hz or so the preamp seems a lot quieter...
but it isn't.


** Incomprehensible.

Mic pres do not have mains frequency hum.




...... Phil