Cryogenic treatment of an LP?

Theaudiotweak - In your trumpet example your supporting my statement that cryo treating increases the vibration transfer. People go to great lengths to reduce vibration in LPs.

The molecular changes that result from cryo treatment is on an order of magnitude that is far different than a stylus. If the surface friction is reduced by cryo-treatment then the LP surface is changed and there's no way that this could systematically improve the recording. The result would be random.

People mistakenly reduce vibration in many if not most audio components. There is a method some use in the collection and transfer of this reactance in the reduction of perceived excess energy. Vibration can be given direction. My preference is to use it and not lose it. Tom

The cryo process doesn't actually result in compressing the atoms of the material - the atoms compress during the freeze cycle then expand during the thaw cycle. The result is a more homogenous arrangement of the atoms. The stress relief aspect of the cryo process is important since the manufacturing processes of stamping, bending, drawing, etc. is what produces stress and strain in the metals and plastics. And this combination of more homogeneous atomic structure and stress relief produces less vibration, better performance of materials in general - more durable, less britle, greater strength, greater stiffness, etc.

Geoffkait - exactly, but what does that have to do with playback of an LP? I'm not sure I agree completely with the less vibration part (it should result in a more uniform vibration which is, in theory, why electrical current flows better though a cryo treated cable), but better material properties is a fact BUT only matters if the use of the material interfaces with these properties in a meaningful way.

Example: I can type a sentance on a roll of single ply toilet paper and on expensive letter head. The quality of the letterhead is much higher, but it has no bearing on if I can read the sentance as long as the toilet paper isn't damaged.

I don't see how material properties have any measurable effect on the playback of an LP. Cryo-treating causes material changes that are verified in metals using electron microscopes and this is orders of magnitude different from the scale of a stylus where I'm fairly certain that it's possible to tell the difference between different tip designs using 10x magnification if not using the naked eye.

I've never said that the LP material properties are not better, just that it doesn't matter. The stylus is a macro mechanical transfer of informaiton and cryo treatment resuls in a micro material improvement.

Theaudiotweak - How does one give vibration in an LP direction?

Would a piano sound better if the keys were cryo treated?