The answer explain why i quitted vinyl at the time in the years between 1975 and 1980 where there was a degradation of the material component in many companies for the sake of profit...( my new vinyls gave me noise often)
Vinyl material qualities ask for extreme quality why ?
«
- Average contact pressure (both walls): ≈ 30,000–60,000 PSI
- Peak pressure on the “loaded” wall during high-velocity modulation: 50,000–100,000 PSI (and occasionally higher with very fine-line styli)
These numbers explain why vinyl is actually under enormous local pressure (far higher than a car tire on asphalt, which is only ~35 PSI), yet still survives thousands of plays: the contact patch is microscopic, the vinyl is relatively soft and visco elastic, and the stylus slides rather than rolls.» GROK
The force in pounds per square inch of phonograph stylus contacting a record is more force per psi than the contact area of the tires against the road of a fully-loaded 18 wheeler. True? Not true?