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-   -   How is cut an LP (http://www.diyaudio.com/forums/analogue-source/7986-how-cut-lp.html)

Raka 25th November 2002 01:08 PM

How is cut an LP
 
We try to make the tt as perfect as posible, don't we?

That means we try to reproduce the same enviroment the lp had when cut, does anyone know how is cut an LP?


BTW, if we in our homes, with an infamous stylus and rumbling floor and resonances coming from hell, we get a fantastic sound, how could it be in a mechanical perfect world... sniff.
And they are only about a euro, at least I bought this weekend a pack of 26 lp for 20 EURO, some of them with the plastic film virgin. Are we crazy???

halojoy 25th November 2002 01:20 PM

LP bargains!
 
Now is the time to do some great investing
in LPs.
There will come a time in the future
when some of those vinyls will be highly treasured.

Some have recognised this, others have not.

SuppersReady 25th November 2002 01:25 PM

But don't forget we should listen to them as well or they cease to have any real value. A book on a shelf is only paper after all.

Paul

halojoy 25th November 2002 01:38 PM

Listen to them would be the main reason for buying.
But also they are a kind of documents
covering an era in music history
when so much happend. :)

fdegrove 25th November 2002 11:29 PM

CUTTING EDGE.
 
Hi,

For those of you wanting to take a look at the machinery involved to cut a record:

http://www.vinylium.ch/master/vms80b.jpg

And some sites:

NEUMANN

http://www.stratozoo.ch/cut/lathe.html

http://www.organicmusic.de/images/Lathe%201.jpg

Cherio,;)

Raka 26th November 2002 07:17 AM

How they face the problem?
 
Thanks for your response,


I've never seen a machine like those, it's very interesting. Thanks a lot Mr. fdegrove!!

Now the question is: How they face the problem? We are not trying to get a perfect and constant speed and so on, but actually try to reproduce the exact enviroment of the machine that cuts the LP, don't we? Do they use belt drive? pivot arm? What kind of platter?

We have to get the data from the source. If we change the original machine i.e. the lathe for a stylus and cartridge, we get a perfect tt, don't we??

Any technical data of these lathes would be greatly appreciate.



And boys, it's not only the historical value or the collectors value, it's not only the amazing sound, it's that you can get recordings that never will come out on CD. That is: where can you buy Tzigane of Ravel played by Szerying? Where can you get those brilliant performances of Oistrakh? I'm afraid that some artists are dead and won't go to a studio any more, and the companies won't re-publish those fantastic concertos. Yes, they are treasures. But we are going off-topic. We can start another one if you like. I'd love to.
Yes, a book only on the shelf isn't worth a penny, at least if you are not a window dresser
;)

fdegrove 26th November 2002 06:44 PM

CUTTING EDGE
 
Hi,

Following threads my be of interest to you:

DIY TT PROJECT

TT MOTOR SPEED TESTS

And there must be others of interest.

Thinking that turning a cutting lathe into a TT would give you the perfect TT for home use is a bit simplistic to say the least.

You also seem to suggest that speed accuracy is not al that important but again this is quite the contrary,the entire playback depends on it.

If you want read up on the topic of lathes I found you some more :

http://www.diyaudio.com/forums/showt...&threadid=6501

http://www.kasumirecords.com/cutting/

There is more available on the internet if follow some links contained in these sites.

Ciao,;)

Raka 2nd December 2002 06:46 AM

Keep the source
 
NOOO, I didn't mean that the speed accuracy is not of important!!! What I mean is that what we have to do is to copy the first step conditions. If the LP is cut with constant speed, then we should copy this method, making the speed constant, as in the copy stage. Going to absurd, if the copy is made with constant acceleration, then we shouldn't maintain our tt's speed constant, but in constant acceleration as in the first step.
Well, going to reallity, how is the design of the platter of the LP cutter machine? Do they use synch motors? Do they use suspended platter? Servo? How is isolated the lathe? What bearing?
What I'm trying to say is that the main design is already done, we could invent the most constant speed machine ever, but if the lp is cut without it, is of no use and sound no better!!

Christer 2nd December 2002 07:59 AM

Re: How they face the problem?
 
Quote:

Originally posted by Raka

And boys, it's not only the historical value or the collectors value, it's not only the amazing sound, it's that you can get recordings that never will come out on CD. That is: where can you buy Tzigane of Ravel played by Szerying? Where can you get those brilliant performances of Oistrakh? I'm afraid that some artists are dead and won't go to a studio any more, and the companies won't re-publish those fantastic concertos. Yes, they are treasures.

Actually, I think that one of the biggest advantages of CD is that
the record companies have reissued so much old material that
had not been available on LP for many many years, and in some
cases it had never been issued at all. Of course, not everything
has been reissued, but there has probably never been so many
old recordings available before the CD. I think you should find
quite a lot of Szeryng and Oistrakh on CD too. Don't know about
the Szeryngs Tsigane. I have the 1949 recording with Ginette
Neveu on CD so I haven't bothered to look for other recordings.

Sorry for continuing the deviation from the thread topic, but
historical classical recordings are never off-topic to me. :)

wolf08gang 20th March 2012 03:28 AM

New guy, first post. I was looking for something entirely different, and accidentally came across this old thread. I love everything about it. That is all.


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