Cryogenic treatment of an LP?

It's quite obvious, having done it, that cryoing a steel rod makes it vibrate less, so it's not too much of a stretch that the same is true for vinyl. So I disagree with your premise that a more homogeneous material doesn't vibrate less (for its modes of vibration). If the vinyl, in fact, vibrates less due to extrernal forces, then the stylus will be extracting information from the grooves more accurately. Make sense?

First, explain to me why a cryo treated steel rod would vibrate less and how it can be verified, then we can discuss how that transfers to vinyl. If it's obvious and you've done it a practical explaination that's based in science shouldn't be too difficult.

The cryo'd steel (or aluminum) rod vibrates less when struck with, say, a wrench or other tool, more of a "thunk" than ringing. I actually cryoed all the steel or aluminum rods for one of my products (isolation stand) way back when for just that reason. Is that scientific enough for you?

The ultimate cold stamper.

Geoffkait - So you're saying that you're willing to compare the sound of a hammer blow to a piece of metal to what happens when an LP is cryo'd?

If this is the common result of cryo treatment of metal why would people cryo brass instruments?

A different frequency isn't directly related to the magnitude of the vibration in the material. I'm not saying that you didn't hear a difference, but higher or lower notes could simply sound different in your "listening" room.

I'll have to think more about what you describe, but it sounds like you're saying that cryo-treatment made things sound dead. I better not cryo my Nordost Sort Kones or they may turn into isolation rather than coupling devices.