Cartridge Loading for a phono pre amp

@holmz Oh man, you're doing Raul's homework for him😄

If I cannot get fed, then at least I can do the cooking or the dishes ;)

This has been a fabulous technical lesson provided by one of the industries best. This has also been an exercise in personal credibility. Desperation vs confidence. Compliance vs torque. What a discussion; one for the ages.

 

atmasphere @holmz : " " Your target for mechanical resonance is between 7-12Hz. The mechanical resonance is a product of the mass of the cartridge in the arm vs the compliance of the cantilever of the cartridge. Changing the load from 47K to 100 Ohms can easily get you outside of this target window- and that can cause tracking problems.. " "

 

Where out side in specific: 5hz? 15hz? 6hz? . All you have to do is show it.

 

 

R.

Ah you are talking about cartridge stiffness with respect to the arm/cart resonant frequency.
I was only wondering about the stillness changing.
And not wedding that to overly affecting the arm per se, but more as to whether the loading is affecting the cartridge stiffness, and maybe affecting the tracking of the cartridge.

So we are on two different targets, which are not intersecting.

I happy you have a wizard, I am not even sure what it is, but I like to at least have an intuitive feel for physics, if I cannot have a grasp on the equations.

I would want that grasp, irrespective of whether I had a machine that told me the answer.

This has been a fabulous technical lesson provided by one of the industries best. This has also been an exercise in personal credibility. Desperation vs confidence. Compliance vs torque. What a discussion; one for the ages

I am usually always confident 😎, so I have a start on it.

Dear @fundsgon @holmz : " also been an exercise in personal credibility..." , Really? because again   your " trusti man " is way wrong, not the calculator that’s similar to the one in VE.

The Lyra Kleos is a great match for the SME V as I posted with a true resonance frequency at 9hz. Better than that impossible.

The other calculation is wrong because the Lyra compliance spec is at 100hz not at 10hz that’s what all calculators run. Japanese cartridge compliance specs normally comes measured at 100hz instead 10hz and at 10hz the Kleos has a compliance around 17-18cu not 12cu.

Any rookie knows that, even me. Obviously both of you have to follow learning, as today.

R.

@holmz  : " So we are on two different targets..."

Again, for whatever reasons you just don't read in the rigth way the posts in thios and other threads because I was not who posted:

"" Your target for mechanical resonance is between 7-12Hz. The mechanical resonance is a product of the mass of the cartridge in the arm vs the compliance of the cantilever of the cartridge. Changing the load from 47K to 100 Ohms can easily get you outside of this target window- and that can cause tracking problems.. " " 

R.