Impedance Loading for SS Hyperion

Whilst I agree with your statement, both the Decca and Soundsmith are MI, not MC.

Therefore loading changes affect the frequency response ( and phase ) to a far larger degree than a LOMC, and as far as I know the frequency changes with MI from both resistive and capacitive occur within the audible range. Is that not correct ?

@dover That is not correct. 

The means of the magnetic device isn't important. The inductance is. The SS is fairly low inductance (hence low output) so everything I said about loading applies to it. 

You are correct in implying there is a continuum. The more inductance the mechanism employs, the lower the resonant electrical frequency with the tonearm cable. High output MM cartridges have such high inductance that the electrical peak is at the extreme high end of the audio band or just barely ultrasonic. Usually because the coil used is also lower Q (Quality; the relationship between its length vs its diameter) the peak is less profound and covering a wider range of frequencies. So a high output MM cartridge might have a peak of only 20dB (which is still a lot). That peak can affect the audio band directly so loading a MM cartridge is mandatory if you want it to sound right. 

@atmasphere 

Thanks. I have run the low output through Soundsmith's own phono and changes from say 800 to 1000 ohms with that phono were quite audible. You are saying this is the phono or phono/cable combo.

Decca is another story but I have set up probably north of 30-40 over the years - usually run at around 22k.

Thank you for the explanation.

@dover Actually what I am saying is that if you hear differences between 800 and 1000 Ohms it points to an RFI sensitivity problem in the phono preamp (its input, specifically). If that issue is fixed you won't hear those resistor differences any more. Plug and play. 

For the record, SS says the inductance of the Hyperion is 2.75 mH, about 100X to 1000X higher than a typical very LOMC. And about 200X lower than a typical MM.