Ortofon Per Windfeld Load Impedance?

Dear Taylor: That Ortofon DC resistance is 4 Ohms so loading it at 100 Ohms is a good to start value but like almost everything on audio and specially on phono cartridges the quality performance is system dependent, good cartridge set-up and user ( you ) music sound reproduction priorities, so don't be " shy " about and try from 75 Ohms to maybe 250 Ohms and then choose what even your priorities.

Regards and enjoy the music.
Raul.

Dear lewm: Only the Jubilee that I think is a good performer.

I will look the opportunity to hear the Windfeld, I like Ortofon ( MC/MM ) that are cartridges with very high build quality. As a fact the 7500 is one of my MC reference cartridges that I'm loading at 100 Ohms.

Regards and enjoy the music.
Raul.

Dear zieman: +++++ " I routinely change loading with different phono cables. The differences are not subtle. " +++++

as Audiofeil and Atmasphere posted almost always ( nothing is perfect ) the cable resistance value per meter is too low for take in count on cartridge loading and I agree with them.

IMHO what you are hearing is due to own differents cable colorations but certainly not mainly because its cable ( really low ) resistance. As a fact you, like everybody, don't want a high resistance cable where you can loose the signal high frequencies ( between other things ), normally a cable designer almost always works on a very low resistance cable.
Of course that maybe in one of those cables that you already try it its resistance could be really high but that is not the standard, as I told you: we are looking for a very low resistance cable as a rule.

Btw, the other subject that I always support is what Atmasphere posted: don't use the cartridge loading like a tone control/equalizer to compensate for " errors " somewhere in the audio chain.

Regards and enjoy the music.
Raul.

Dear Zieman: +++++ " Right, so when was the last time you saw a 5 meter phono cable? " +++++

just for curiosity: which kind of trade-off(s) are you " trading " to accept that long phono cable?

Regards and enjoy the music.
Raul.

Dear taylor514: +++++ " and will have to rely on my hearing to determine which sound I like best. " +++++

Your hearing almost always be your best " judge ". The measures tools help to tell us what is happening in our system ( links ) because like in the cartridge load impedance it is common that what you like at hearing are not close of what it should be in theory through measurements and this could help you to try and find where in your system is a " trouble ".

From my experiences and IMHO loading a cartridge with a internal resistance of 4 Ohms , like the Windfeld, with a preamp set-up of 1000 Kohms makes no sense to me, this could tell me that maybe something is not totally fine in that audio system, unfortunately I don't have that cartridge to test it in my system and I can't be sure about.

Regards and enjoy the music.
Raul.