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

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!

Regards Anthony

"Beauty is Truth, Truth Beauty.." Keats

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Follow Ups Full Thread

Topic - Ortofon TA-110 vs Jelco - flood2 14:10:02 05/08/22 (12)

Jelco - M3 lover 07:52:23 05/09/22 (3)

RE: Jelco - flood2 13:43:12 05/10/22 (2)

Link - viridian 14:07:27 05/10/22 (1)

RE: Link - flood2 15:53:31 05/10/22 (0)

Watching the thread, however... - jupiterboy 14:15:32 05/08/22 (7)

RE: Watching the thread, however... - flood2 22:26:31 05/08/22 (5)

An interesting look at all the noise surrounding compliance, link. - viridian 08:22:35 05/09/22 (4)

Have some issues getting his calc to work... - jupiterboy 15:08:37 05/09/22 (2)

RE: Have some issues getting his calc to work... - flood2 13:39:54 05/10/22 (1)

+1 - jupiterboy 15:23:29 05/10/22 (0)

RE: An interesting look at all the noise surrounding compliance, link. - flood2 14:07:34 05/09/22 (0)

Reasonably priced, made in the same factory as the uber expensive Ikeda arms. Nt - viridian 14:35:01 05/08/22 (0)

Follow Ups

RE: An interesting look at all the noise surrounding compliance, link. - flood2 14:07:34 05/09/22 (0)

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

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