Weird/curious that you choosed in Nagaoka IM design 500 and not 300mH. Why did you do that?
300mh is way nearest to the real Nagaoka value than 500mh and with 300mh the resonace frequency is at 24.6khz Way different and as we can see through the Lehmann specs it is designed with very high overload levels.
So, that’s not the trouble.
What if you take the MM AT25 85mh along say those 600pf? even with that extremely high capacitance the resonance is over 22khz. At normal 200pf the resonance is 38.6khz ( fundamental frequency. harmonics that goes inmmediatly to 77.2khz. )
"" its going to be audible. The slope of the peak is there at 15KHz and there will be phase shift elements easily down to 10KHz, which will be perceived as brightness. ""
A surface LP click certainly is audible as a " click " sound not as brigthness and I’m talking of clicks and pops because that’s what reports the OP not brigthness: he said: pops and other noises and never mentioned brigthness.
So what’s all about? and of course that you can’t perceive as a click or defined kind of sound 17khz-18khz ( you can’t aisle it. ), you just can’t do it.
In the other side the harmonics of that resonance at 19khz ( the fundamental. ) goes to 38khz almost at once. My information is not false.
Why is false? proved it is false not only post it. You are the one whom say is faklse then: proved not talk, we need facts. I know as usual with you: you have no facts at all. Pity.
A gentleman with deep knowledge levels way higher than you and ovbiously than me says about:
" Clicks don’t inherently have a frequency because there is no repetition in the signal. That would be like asking "what is the frequency of an impulse? ""
The Hagerman calculator gives an " idea " of what could happens but exist other parameters around it that certainly changes the calculator values. Exist a very complex relationship between several electrical and mechanical parameters to try to aisle one of them.
Your " terrorism " has no limits because you want and like the " protagonism " but unfortunatelly you have not the rigth knowledge levels and skills to has it. Sorry for that. Try again.
R.
Btw, a few days ago you posted:
""" With regards to surface noise I agree most of that is in the groove..................................................
The surface noise is mostly an artifact of the pressing plant ""