Maybe it is not just about math and resonance in theory, the low compliance cartridge just better on superheavy tonearms, they are designed for superheavy tonearms, change the arm to something with 20-30g effective mass and your Denon will be better on heavy arm. Very simple. With heavy arm like Fidelity-Research FR-64s you can only improve the sound of your Denon 103.
You need dynamic compliance, no static.
And yes ... x 1.7 ... to find out the number at 10Hz
@yeti42
My SPU Royal G mkII was very impressive on FR-64fx and Lustre GST-801 tonearms, with its modern Replicant 100 stylus it will put any oldschool cartridges like DL-103 to a shame. The Royal N is just the same, but without SPU headshell if i remember correct. If you have high mass tonearm you can also look for FR-7fz or Miyabi cartridges.
Static compliance of the Denon is widely thought to be around 10 (rule of thumb seems to be double the stated compliance of a Japanese cart).
You need dynamic compliance, no static.
And yes ... x 1.7 ... to find out the number at 10Hz
@yeti42
I’m going to try an SPU Royal N on an arm I can get up to 18g affective mass and it’s a heavy cartridge.
My SPU Royal G mkII was very impressive on FR-64fx and Lustre GST-801 tonearms, with its modern Replicant 100 stylus it will put any oldschool cartridges like DL-103 to a shame. The Royal N is just the same, but without SPU headshell if i remember correct. If you have high mass tonearm you can also look for FR-7fz or Miyabi cartridges.