On Mon, 24 May 2021 20:48:44 -0400, Mike Rivers
wrote:
On 5/23/2021 8:40 AM, Don Pearce wrote:
It's easy with a condenser mic because the first stage of the preamp
is built into the mic, so the loading is always going to be right.
That's the easy part. Where condenser mics differ in their sound when
connected to different preamps is whether there's an output transformer
or not, and if there is, it has a sound and that sound can be different
for preamps with different input impedance, and whether the preamp has
an input transformer or is transformerless, and the circuit topology of
a transformerless output (mic) or input (preamp.
There are so many ways to affect the sound between the diaphragm and a
usable output voltage (or digital output if the preamp includes it - a
whole other potential can of worms.
Well, anyone who is still messing with transformers gets what he
deserves. Active electronics provide common mode rejection every bit
as good these days, and without the distortion and frequency response
penalties inherent in the non-linear magnetic properties of iron.
d
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