Not so much misleading as just not very relevant to the sort of mics we usually build here, for all the reasons you say.
What isn't clear is why the frequency affected is around 8k rather than some other frequency, and what characteristics of the capsule might lead the effect to be smaller or larger or the frequency to be different.
I quite agree that it is irrelevant to a typical LDC though, and certainly AKG didn't think it a problem to drop the polarisation voltage on the 414B-ULS from 60v to 20v when the pad is engaged, even though the whole deal with the ULS mic is flat response. Which completely supports your experience that it isn't an issue with normal LDCs.
toggle quoted message
Show quoted text
On 12/06/2022 18:45, recordinghacks wrote:
That graph is misleading. The voltages pictured are 28, 150, 250. Those values might be appropriate for a small diaphragm measurement capsule. Large-diaphragm capsules such as most people here would be using would collapse at any voltage higher than 70-80V. The actual range of polarization values you might actually use in practice ranges from about 20V to 70V, not 28-250.
