I think the explanation is that dry played vinyl deforms with heat of the stylus, but springs back.
Wet playing chills the vinyl too quickly, and the deformations become permanent......IIRC.
Dan.
Some real world figures would be a good idea, as we seem to be jumping on to the all relays are bad road, when I have heard some comments where they are used in demanding low voltage/low current measurement with no problems. So like all possible causes of problems the whole facts should be examined, and for all possible suitable relay types for audio use.
Again do they add distortion or is it just some added resistance, and is it of a level that we should be concerned about, or are there other problems that would be better looked at.
That said I only usually use one source these days (digital) so don't have extra switches or relays in the signal path. One of my Cats ate my tone arm!
Again do they add distortion or is it just some added resistance, and is it of a level that we should be concerned about, or are there other problems that would be better looked at.
That said I only usually use one source these days (digital) so don't have extra switches or relays in the signal path. One of my Cats ate my tone arm!
I think that the argument is that cold vinyl is too stiff.....IIRC.
Either way, there are reports of permanent damage.
Dan.
If the cantelever arm moves in a magnetic field, dc or otherwise, there can be a voltage impressed upon it. So yes, there is indeed a possibility determined by design.
Once the parts are settled into a static position, then no.
jn
Vinyl has an elasticy modul which cause the Fres at apx. 20 Kz.
Liquid cooling will harden the surface, so the fres shifts higher( not lower, sorry, i made a mistake due language in 50300).
But the heat is generated at a very small contact area in very short time and i suppose the the coolin liquid can absorb this faster , causing the deformation.
But like i said, i do not know how check this out properly.
You may think abouth cutting heads.
ALL of them use a heating system for the cutter to ensure that the groove is cutted like necessary and avoid to much resonance.
Thereafter the records should chill out at least 30 minutes, better a half day to avoid errors, since they are sensible for temperature changes.
Also when records have been cleaned with vacuum style cleaners, they need to warm up to room temperature before use, otherwise they sound bright and are damaged nearly like wet played ones. Thats my experience.
Liquid cooling will harden the surface, so the fres shifts higher( not lower, sorry, i made a mistake due language in 50300).
But the heat is generated at a very small contact area in very short time and i suppose the the coolin liquid can absorb this faster , causing the deformation.
But like i said, i do not know how check this out properly.
You may think abouth cutting heads.
ALL of them use a heating system for the cutter to ensure that the groove is cutted like necessary and avoid to much resonance.
Thereafter the records should chill out at least 30 minutes, better a half day to avoid errors, since they are sensible for temperature changes.
Also when records have been cleaned with vacuum style cleaners, they need to warm up to room temperature before use, otherwise they sound bright and are damaged nearly like wet played ones. Thats my experience.
I'd like to see some data showing this purported heating effect. After all, vinyl has a high heat capacity and the stylus moves along much faster than a heat diffusion could reasonably occur.
Attachments
You were thinking of cooling the record down to -20C, before playing it ?
Wet playing of records was tried extensively about 40 years ago. Yes, it can sound OK, and static free while playing wet, but it changes the record surface so that the record becomes VERY noisy when played dry.
Now SY, why don't you solve the problem, rather than tell us to prove it to you?
Now SY, why don't you solve the problem, rather than tell us to prove it to you?
It's already been solved: don't play them wet.
I'm interested in the claim about local heating. It's been often asserted, but with no actual evidence.
Do you believe in contacts influence on sound quality? Have you ever heard difference between firm and slack connector?
I destroyed, for educational reasons, two top quality sealed PCB relay and I told myself not to use these devices in the signal path. First rate XLR and RCA connectors on enclosure and then a few suspect riveting for precious audio signal. Rotary switch have one piece contact and is self wiping by rotation, I even put a drop of contact enhancer.
Various crimped Molex connectors often used are also sound killers.
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