Vinyl madness

[Wombat]

well, one could argue that VTF is the only thing that should change during ongoing setup, and considering the ambient temp in my place can vary quit a bit depending on season ...

(Even in the Nagoaka guide, they say that VTF and temp are important)

Do they give set-up data vs temperature and how does it affect performance over variable day-to-day temperatures? This is a question that may not have a definitive answer.

Use of thermo-elastic suspension materials that are significantly variable at normal environmental temperatures seems odd to me unless the optimum temp. is specified and a constant temperature room is employed- not exactly consumer friendly. Just my materials engineering knowledge getting me curious.

 

[Fitzcaraldo215]

Do they give set-up data vs temperature and how does it affect performance over variable day-to-day temperatures? This is a question that may not have a definitive answer.

Use of thermo-elastic suspension materials that are significantly variable at normal environmental temperatures seems odd to me unless the optimum temp. is specified and a constant temperature room is employed- not exactly consumer friendly. Just my materials engineering knowledge getting me curious. View attachment 14937

I remember back in the 70's, HFNRR caught a well regarded, top B&O cartridge in the act of varying substantially in frequency response with not-uncommon ambient room temperature variations. They provided the alarming measurements and HFNRR were quite critical.

I believe the subsequent consequences were that HFNRR continued to look for this in testing other cartridges. I don't recall any other cartridges that caused a similar flap. And, B&O replaced that top of the line cartridge with a revised design in a hurry.

I am guessing materials are much better today, but is anybody really testing for this among other things, especially manufacturers?

 

[watchnerd]

What's are the pros and cons of a dynamic balanced, knife-edge tonearm?

I'm looking at the new Jelco TK-950S, which seems functionally similar to the no-longer-produced Ortofon RS-212 (yes, I know Jelco does OEM for Ortofon).