Total posts : 45366
Yes, everything you’re saying compares to what I’ve been doing… I just didn’t comprehend what the word “maximum” was telling me.
To go over things using my numbers…
My LoadZ is 600-ohms, the rated microphone input to a Radio Shack Mixer.
The guideline I’m using comes from a Neumann Whitepaper for microphone voltage amplifier input impedance to pre-amp inputs.. “The source impedance should look into a load of a magnitude at least 5-times its value”…
Therefore I want sourceZ to be 120-ohms.
Your guideline quoted 10-times the magnitude stepping up from source to load, but it’s the same idea.
120-ohms is well below the “maximum” of 2.2k, but it works and the level in practice is just right for the input to the mixer.
Unless I continue to misunderstand I may be doing it right. The fact that it works isn’t enough to convince me.