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RE: An interesting look at all the noise surrounding compliance, link.

Posted by flood2 on May 9, 2022 at 14:07:34:
Hi Marty

Korf has chosen an example of a cartridge that is already quite nicely matched to the 750D which suits his narrative. What he should be doing is putting on a "fresh" (not aged with a hardened suspension) Shure V15TypeV (or any of the original high compliance Stantons like the CS100 or 881IIS) on to prove his point and I think you will find that his argument breaks down.
These days, most cartridges for sale are already an ideal match for most arms on the market so the need to worry about LF resonance and Q is not there for most people and there is a broad range of effective mass that these cartridges are going to work satisfactorily with.
For me, the SL1200 arm was already too high in effective mass for some of my high compliance cartridges to perform at their best.

The consequence of putting a very high compliance cartridge on an arm that has a higher effective mass than ideal such that the LF resonance is <<8Hz is that the VTA and SRA become very inconstant - the modulation of the groove signal gives rise to an audible warbling if the LF resonance drops too far below 8Hz
On an SL1200 arm, my original AT440ML and Pickering XSV4000 had a LF resonance <7Hz (between 6 and 7). I discovered that some British pressings cut at The Exchange exhibited sub sonic rumble that excited the LF resonance even on a flat pressing and the stylus was bouncing up and down and sideways with an alarming amplitude which degraded the tracking ability massively and there was a coarseness to the sound. I speculated that the building in which the cutting lathe was sited may have been shaking when the underground trains were passing underneath or perhaps they were monitoring live while cutting - either way the result was an unstable cantilever.

Secondary arm resonances are the least of my concerns if the basics like a stable VTA/SRA and good tracking can't be achieved!