Cartridge Loading for a phono pre amp

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.

@atmasphere 

Thanks for your reply, really appreciate it!

Any one own a Hi-Fi News test record can easily determine how significant that loading resistance affect the cantilever to be stiffer and introducing possible tracking issues, just play with the loading resistance setting and run the cartridge/arm resonance test.

If you doubt this I recommend a simple test, which is to run a square wave through the cartridge itself and observe the results on an oscilloscope. If the square wave rings, then loading will affect it at audio frequencies. If you do this with any LOMC cartridge you'll see that the inductance of the cartridge is so low that a square wave at any audio frequency will look perfect on the oscilloscope. So its obvious then that the loading isn't affecting the tonality of the cartridge. Something else is.

I don't have any record with square wave test track on hand, can you recommend one?

@rauliruegas

Perform a simple test with Hi-Fi News test record will give us the answer, do you agree?

@fundsgon  : 

 I think that all forum participants has a responsability and is not spread false information with no real evidence. That responsability comes by the fact that Agoners forums have different knowledge levels gentlemans and everyday comes rookies looking for advise looking for help so the higher knowledge level participants in the forums have all a higher responsability about that's exactly that: give help and good proved advises.

Don't you think? 

That " man " as other always " cry " with the forum moderators. They have no other " exit ".

In any forum and everytime I read that spreading lie I will post about. It's each one responsability and please don't tell me that call something " black "  that's " white " because this is a lie and I'm not a lier.

R.

The obvious difference between the Zestos and PS Audio as loading changes is clear as a bell.

@fundsgon 

It only confirmed the Zestos is sensitive to RFI and PS Audio stellar is not.

Can you do a cartridge/arm resonance test for 100Ω and 47kΩ loading and see if the resonance frequency changed significantly?

Thanks