Resistive Loading SUT or Nah?

[SIY]

Yes, but if I keep the source resistance close to the nominal tap values (3 and 40 ohm) in my Denon AU-320 it is very flat.
Using 10 ohm source on 40 ohm tap gives an overshoot…
The bump below 100hz seems to be a measuring artifact when using the oscilloscope, not there when I use other methods

With a Zobel I can correct the overshoot, I cannot really hear any difference…For maximum flatness and extension I need to allow a small overshoot on my Oscilloscope..

Is this with the transformer cabled to the input of your phono stage? Where is your measurement point?

One thing to be careful of is that you use a 10x probe on the 'scope; the 1x can really load things down.

 

[Balle Clorin]

Function generator-voltage divider- SUT-RIAA load with 47k and Capacitance 50pF , Oscilloscope connected in paralell with probe at 10x , I think you taught me that once…
measurement point at RIAA input see photo , Denon AU-320 has fixed cable to RIAA

I have used both Dummy Load 47k + 150pF and RIAA, not sure what I used for that particular plot.Most likely dummy load For sure RIAA load in this plot.

 

[egellings]

More like several hundred mH, I'd say.

Greetings from Munich!

Manfred / lini

Agree, I saw one with nearly 400mH specified for it. How music got through that thing puzzled me.

 

[Balle Clorin]

MM carts and 400-500mH are irrelevant here as MM do not need or use SUT. My MC have 25uH and works fine with a suitable SUT or properly tuned Zobel/RC load, can even do it with secondary R tuning alone , but with some ultrasonic frequency loss.