Some New Technical Material!

Anything goes! Inventors! Artists! Cutting edge solutions to old problems. But also non-commercial usage of record cutting. Cost- effective, cost-ineffective, nutso, brilliant, terribly fabulous and sometimes fabulously terrible ideas.

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grooveguy
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Joined: Thu Jun 22, 2006 5:49 pm
Location: Brea, California (a few miles from Disneyland)
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Some New Technical Material!

Post: # 44890Unread post grooveguy
Wed Nov 23, 2016 6:59 pm

Hi, fellow Trolls!

A couple of sources for some important technical material.

1. I've been in communication with a really nice fellow, Mr. Torben Roenne of ETEC in Denmark. ETEC is into hydrophones, but also does repair on the Danish-built Ortofon disc recording systems. I have been bugging Mr. Roenne for some time to make his vast library of Ortofon-related material available, and he's finally done it. At his special Website: www.torbenteknik.dk you can find a rather comprehensive write-up on the Ortofon stereo cutterhead, plus manuals, schematics and sales literature for the power amplifiers, limiters and other signal-path items involved in the Ortofon mastering system. The Ortofon cutter works on a different principle from the traditional 45-degree-offset drivers that most of us have emulated in our own design endeavors, and has a distinct advantage of simplicity for the home craftsman. Check out the brochure for the Ortofon head on Torben's site and let your imagination take over. This head has been the inspiration for at least one other Troll here on the group; maybe we can get something happening!

2. A longtime friend of mine, a very sharp ex-Ampex electronic-design engineer with precision machine-shop experience as well, thinks he has some ideas for stereo cutterhead design too! This guy is very thorough and researches all aspects of a project before chucking-up any stock in his milling machine. He came across a paper on the implication and importance of Vertical Tracking Angle in disc recording/playback, which I've uploaded to Dropbox here: https://www.dropbox.com/s/lyg11s2f6hjchfh/Vertical%20Tracking%20Angle.pdf?dl=0

So your assignment is to read all this in the coming weeks. There will be a short pop-quiz, so study hard!

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Sillitoe
Posts: 421
Joined: Wed Apr 30, 2014 8:30 pm

Re: Some New Technical Material!

Post: # 44892Unread post Sillitoe
Wed Nov 23, 2016 7:26 pm

Wow, thanks grooveguy!

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markrob
Posts: 1670
Joined: Wed Nov 28, 2007 1:14 am
Location: Philadelphia Area

Re: Some New Technical Material!

Post: # 44898Unread post markrob
Wed Nov 23, 2016 10:51 pm

Hi,

Thanks so much for posting this!

Mark

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Fatrecco
Posts: 58
Joined: Wed Aug 12, 2015 2:22 pm
Location: germany

Re: Some New Technical Material!

Post: # 44908Unread post Fatrecco
Thu Nov 24, 2016 5:13 pm

thanks, so many info and answers :D

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fredbissnette
Posts: 383
Joined: Tue Oct 11, 2016 5:38 pm

Re: Some New Technical Material!

Post: # 44934Unread post fredbissnette
Fri Nov 25, 2016 10:08 pm

kool
Instagram @styluspressurerecords

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