Stylus Rake Angle

John, I appreciate your providing the links. I enjoy such articles and do find them helpful to understand the technical issues involved and why there are limitations to the medium.

I just thought I would share some listening impressions I've had recently and how small changes to SRA can in fact alter our impression of how an LP sounds relative to hearing something real like a solo cello and orchestra during an actual concert.

Dear Peterayer: Good that you made " your work " that you took your time to made those tests nad good that you heard those differences.

The only way to grow up and improve our knowledge level is through listening tests even if some of them can be cumbersome or a night mare. I think there is no other way to learn.

It's no surprise that Dynamics improved with your set up changes because Dynamics ( as a main MUSIC characteristic. ) involve almost all other live MUSIC characteristics.

The main importance on those kind of tests is to understand the differences and know from there what looking for during other kind of evaluations or item comparisons.

That kind of " exercise " is time consuming but the rewards on the self learning is worth the effort.

In the other side, when I analize technical audio subjects or read what other persons post in that regard normally what I do is to go to my system and make the set up on subject and listen because I learned that several times the analog audio theory ( technical ) is not confirmed under listening in deep sessions due to that " analog imperfect world " we are dealing with. Btw, normally I don't question other persons opinions till I experienced those opinions or when I already had the experiences.

Regards and enjoy the music,
R.

Csontas: If we must continue:

John, have you read this article in it's entirety yourself? It corroborates every single point I've made without fail! I'm now wondering what your motive is in participating in this discussion.

Yes I have. I read it when it was published. I understand the difference between SRA and VTA. My motive in contributing to this thread was to try and help those who obviously thought SRA and VTA were the same thing, see that they were different and had different effects. I have provided links which is more than you have. Make of them what you will.

John goron. I don't see why you should feel insulted. But I certainly have been. To suggest that those participating in this thread don't understand the terms borders on an insult to them as well. We all understand the terminology and what's clear is that you've been just playing semantics.

If everyone understood the terminology there would be no thread.

You reckon the difference between VTA and SRA is a semantic one and so adjust the height of your arm on the fly and find it sounds better. Good for you. However, some might wish to know why it is the case in order to improve their understanding.

From what you have posted anyone who knows the subject (some of the previous posters) will see that you are confused about why that is so. You are not alone Don't feel insulted.

I don't know why you are so concerned with what I have posted and why. I simply post when I feel I can contribute to what appears to be a misunderstanding or a confusion regarding vinyl replay.

I don't care what your motives are, and I will leave it there.

But when the cutting stylus records any signal other than a pure mono one it must move more and less deep into the lacquer, otherwise how can the signal be cut? That was what I was getting at and confused by your answer. I didn't mean the whole mechanism moved, solely the cutter itself

John, you might want to re-read my prior posts as my answer here will be very similar. But to be clear, part of the groove does show variable depth with the signal.But regardless of what that signal is doing, if you look at the center of the groove it will be the depth described by the adjustments on the cutterhead, and not related to the signal, and that is what is called 'groove depth' in the parlance of the field. The only exception is if out-of-phase information is being recorded, which I covered previously- that will cause the center of the groove to seem to change in depth.

Atmasphere:
Thanks for that. I was obviously on a different track regarding the terminology of record cutting lathes- the meaning of groove depth, cutterhead, centre, etc.

It is a good example of why familiarity with specific terms in unfamiliar areas is beneficial. Which type of lathe do you have?

John

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