need info about LP lathe etcher - diyAudio
Go Back   Home > Forums > Source & Line > Analogue Source

Analogue Source Turntables, Tonearms, Cartridges, Phono Stages, Tuners, Tape Recorders, etc.

Please consider donating to help us continue to serve you.

Ads on/off / Custom Title / More PMs / More album space / Advanced printing & mass image saving
Reply
 
Thread Tools Search this Thread
Old 14th January 2009, 01:48 PM   #1
diyAudio Member
 
Join Date: Aug 2004
Location: Italy
Default need info about LP lathe etcher

Hi,

Please do you know a website where I can see some graphs about
LP " lathe etcher" ?
I am interested in performance about frequency response and channel separation Vs frequency.
Perdone my poor english , I'm searching to learn about LP production
phases/ process.

Thanks for the help

Cheers,
Paolo
  Reply With Quote
Old 15th January 2009, 09:53 AM   #2
diyAudio Member
 
Join Date: Aug 2004
Location: Italy
Excuse me,
I 'm referring obyouvsly to the stylus etcher of the lathe machine.

Cheers,
Paolo
  Reply With Quote
Old 15th January 2009, 10:27 AM   #3
diyAudio Member
 
Join Date: Nov 2004
Location: Surrey, UK
Hi, I think the answer depends on the lathe - like asking "what is the response of a cartridge"

You should be able to get some expert advice here:

http://lathetrolls.phpbbweb.com/

It's a forum dedicated to record cutting.
__________________
Analogue stuff at www.audiomods.co.uk
  Reply With Quote
Old 15th January 2009, 10:48 AM   #4
diyAudio Member
 
Join Date: Aug 2004
Location: Italy
Yes Jeff, you are right!

Perdone me, I was curious to see if a "very-good" stylus heatcher has the same issues as like a "good" MC cartridge .........to say a channel separation of about 30dB or even worse!

Very thanks for the link, probabily it is the best place to ask for !

Cheers,
Paolo
  Reply With Quote
Old 15th January 2009, 11:54 AM   #5
Werner is offline Werner  Europe
diyAudio Member
 
Join Date: Jan 2002
Location: Belgium
Look here:

http://www.etec.dk/disc-cutting.html


Click the image to open in full size.
__________________
bring back dynamic range
  Reply With Quote
Old 15th January 2009, 12:02 PM   #6
diyAudio Member
 
Join Date: Aug 2004
Location: Italy
Fantastic Werner!!
It is exatcly what I need.
Just one question befor read all the link : Is this the stylus for the production of the "master LP"first piece, am I right?
Then , from this master, they derivate all the copies for sell, no?
Perdone my basics question , I am newbie on analogue!

Thanks very much,
Paolo
  Reply With Quote
Old 15th January 2009, 12:10 PM   #7
Werner is offline Werner  Europe
diyAudio Member
 
Join Date: Jan 2002
Location: Belgium
Yes.

But this is for a 'modern' Ortofon head developed for
4-channel recordings. These were/are not often
used for commercial LPs. I assume that the performance
of the more often used Neumann SX-66 and SX-74 cutter
heads is a bit worse.
__________________
bring back dynamic range
  Reply With Quote
Old 15th January 2009, 12:23 PM   #8
diyAudio Member
 
Join Date: Aug 2004
Location: Italy
Thanks! you are very kind

I have a strange question: Suppose we make the first Master piece
with that Ortofon machine, we have about 30dB of separation ( approx, just for understand).
When we take the master and derivate all the copies can we assume
approx we are loosing others 6 dB thus in total our final product is
30-6 = 24dB approximatively?

Cheers,
Paolo
  Reply With Quote
Old 15th January 2009, 12:26 PM   #9
Werner is offline Werner  Europe
diyAudio Member
 
Join Date: Jan 2002
Location: Belgium
I don't think the further process of making mothers, stampers, and finally records does much harm to channel separation.

I have often measured separation in excess of 30dB using
commercial test records, so this is definitely possible.

On the other hand, expect treble response to suffer severely from the production.
__________________
bring back dynamic range
  Reply With Quote
Old 15th January 2009, 12:36 PM   #10
diyAudio Member
 
Join Date: Aug 2004
Location: Italy
Excuse me,I don't understand.
If I make a second "read" from master to write the copies,
I am making the process two times so you have 30db separation on the "residual" presents in the master, or not ?
Am I totally wrong in my reasoning?

Cheers,
Paolo
  Reply With Quote

Reply


Hide this!Advertise here!
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
CD Lathe soongsc Everything Else 34 24th June 2013 08:48 AM
1960's Record Cutting Lathe Bearing null object Analogue Source 1 22nd March 2011 09:16 AM
Baluster turning/lathe in Washington DC Area? dgoodier Everything Else 0 8th August 2009 12:49 AM
Tooling (lathe / mill) recommendations ? ckniker Analog Line Level 1 18th August 2007 06:20 AM
MDF on a lathe? masterp2 Multi-Way 20 29th January 2004 12:30 PM


New To Site? Need Help?

All times are GMT. The time now is 03:02 AM.


vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2014 DragonByte Technologies Ltd.
Copyright 1999-2014 diyAudio

Content Relevant URLs by vBSEO 3.3.2