Where do classical vinyl records get their rumble from?

@richardbrand 

"That’s the standard for measuring output voltage of a cartridge.

What "alluded" me was the frequency at which the compliance was measured.

You just love to spin things. Apparently, you don’t read manufacturer’s specifications. All of the specs are derived from that parameter. It’s a design center that is used across the board on just about all audio components, THD distortion, power output, tracking etc. etc. read some spec sheets and reviews! Hi Fi news like I quoted earlier, Stereophile and if you look on the WEB, from Germany, Japan that your internet provider software will translate for you and even publications in, wait for it, Australia will provide in depth technical analysis and all you have to do is decipher. 

Of course there are other more important parameters that are measured that aren’t as nearly marketable as 1Khz that you always see like square wave response, various spectrum analysis, THD vs frequency (which is the only meaningful measurement of a power amplifier’s power output.) and intermodulation distortion which is the most audible compared to THD which for the most part is benign.

@richardbrand I have been buying classical records since the 1960s, but never liked the way DGG mastered their records. They usually sounded dark, muddy, rumble-like. Their engineers even 'succeeded' in doing that with original masters coming from the UK or elsewhere. Among my favourites are Philips Holland pressings with the red label from the early 1970s. If these recordings give you rumble as you describe, then it must be your deck. (My humble opinion...) I am still using a Pink Triangle Export Gti, one of the most transparent and unforgiving turntables ever made. 

Au contraire, mon ami. RB was questioning the frequency at which compliance is ’measured for one of his cartridges.  The correct answer cannot be "1kHz, 5cm/sec".  Raul answered RB’s question. The Japanese measure C at 100 or so Hz, and the rest of us measure it at 10Hz.  And the formula that uses C to calculate resonant frequency wants the value for C at 10Hz for a proper solution to Fr. My problem is inserting data provided by manufacturers to calculate Fr is fraught with the possibility, or the probability, for error.  Because the actual value of C for a single sample of cartridge X is quite likely to be different from the manufacturer spec, and the effective mass of one's actual tonearm is even more problematic. Better to measure Fr directly using the cartridge and tonearm for which you want to know it.

@lewm 

@rauliruegas put it in the simplest of terms, the Japanese is one methodology over another, he even gave a rough approximation in percent to calculate the difference so Richard can use the VE table. You'll arrive at the same end result. I rely on the VE table myself and likewise compensated for the disparity in the Japanese vs Western methods when I set my Hana cartridge and Luxman turntable. Both are designed and manufactured in Japan. Not rocket science and Richard could do his own discovery instead of wasting time here going back and forth over trivialities with sincere hobbyists.

@audphile1 

"Since Holbo uses air bearing and it’s belt driven, the vibrations can ideally only come from the platter/matt. Especially considering that rhythm that you noticed."

Or maybe it's just a poorly designed bearing and one surface where there is supposed to be an airspace is rubbing against another.

The original Garrard 301 has a rim driven platter. Notorious for transmitting motor noise up through the chain. Considered broadcast quality at one time or not they were superseded by belt drive when high quality FM broadcasts became the norm. Individuals like to wax nostalgic for whatever reason, practical or not.