The Secret Society of Lathe Trolls

I started thinking about the absolute polarity (and, therefore, repro's effective acoustic polarity) of vinyl records after finding a website that posts albums that are out of polarity from the standard. One of them was Sketches of Spain (original pressing). I bought a copy online and checked the pl...

A technical or industrial standard is not meant to prevent consumers from using the relevant technology in wrong ways. Nor is it meant to educate professionals on correct operating procedures... If the professional isn't sure, s/he consults the standard. But this isn't very esoteric or technical. I...

A technical or industrial standard is not meant to prevent consumers from using the relevant technology in wrong ways. Nor is it meant to educate professionals on correct operating procedures. It is simply meant to make life easier in that if universally followed, anyone following the instruction m...

Yes, Nygaard got it right, citing in his 1979 paper having used texts borrowed from 'Danmarks Tekniske Højskole'. Also, fwiw, Section 5 of the paper containing the image I attached is listed in the table of contents as 'Standards'. (For the record, the image is a screen grab from the .pdf available ...

Hire QCA to print and circle-cut and hole-punch your labels. They have a lab grade incubator to dry them but they also do remarkable offset printing.

They also make nickel records and preformed stampers, so...

http://go-qca.com/


- Boogie

Ask RPA if they have snap rings. https://recordproducts.com

- Boogie

I recently had a similar issue with some dubs. I had been keeping the stylus heat at 450 mA, and was cutting a quiet test cut in the outside radii of masters, but when I tried these 1-hole T 'dubs' (having no guarantee from the manuf.), there was hiss in the right channel only. So, I increased the h...

Left_High_In.jpg - from PHYSICAL PROCESSES OF CUTTING GRAMOPHONE RECORDS by Fritz Nygaard For one-channel-at-a-time stereo cutting - the left channel diagonal motion for the positive 'swing' half-cycle of a/c program causes the stylus tip to move up and away from the spindle - while the right chann...

Yes, we noticed it a lot, last year before any pressings were made. Transient distortion on the mother that isn't on the identically-cut ref happens when the electroforming is flawed. We arrived at this realization when we started having the 'pulled' master lacquers sent back from the lab, along wit...

Forget about looking at which direction the stylus swung. The easy way to calibrate your cutting system is to have polarity flip switches for both channels of gramophone playback on your console and to listen to several records to confirm that you can hear the Wood Effect (one deflection makes the b...

What disk computer are you going to use with the 'pre-listen' deck? The Neumann pitch & depth computer expects the audio to be 6/10ths of a TT rev in advance of the groove modulation. The Capps/L. J. Scully pitch & depth computer expects the audio to be 10/10ths of TT rev in advance of the groove mo...

Alas, mastering entails 'hella' caveats, since all things are never equal... That's why we usually use a mastering equalizer. (; Specifically, not all analog tape machines are good reproducers. A mastering deck will be able to extract more detail from the flux on the tape than many recorders in the ...

In 2011, 30 k US got a fully restored VMS, '...with a guarantee.' What's shown in the auction pictures is far from 'fully,' let alone, 'restored.' Of course, it would be nice for someone, since it has everything. All he'd need is a willingness for the restoration to take an unreasonable amount of ti...

You might have seen this, already, Mr. Montgomery, as it's on ebay. Nevertheless, anyone looking for Scully castings (and a Westrex cutter and Haeco amps, with some barnacles) might like to view this auction. Seller offers storage until shipping can be arranged. Pricey for a basket case, but maybe t...

The disk computer on your lathe needs an advanced repro signal for the depth calculations of the program (L - R) and the pitch calculations (R). The left channel of the pitch computing will be processed based on the left channel's real time modulation (as the left channel groove wall has no constrai...

I'll not gainsay your astute comments, Foxtrot-Juliette, though churlishly cheeky. I'm giving myself a free pass on what I posted, and you should, too:


http://www.dataasylum.com/bioapi-nanotech-implants.html


- Tim E.

If the idiots at the mfg company can't help you - contact the engineers at LOC Culpeper and find out who THEIR contacts are. Chiba-sensei is an honorable and wise businessman. He knows that manufacturers don't really need a touchless player. since we can play the mother. Therefore, he doesn't waste...

Solution: ELPJ contactless laser turntables... I contacted Chiba-sensei to see if he could make a laser player that can accommodate a 14" master. ' いいえ ' was his reply. But how great would it to be able to play the master lacquer before it's processed and not lose any of the sound because it's only...

Some of that is because the lacquer master is a living organic substance where the metal mother and stampers are not. There are people that insist that acetate tape preserves the warmth of the recording better than polyester because of the same reason (organic acetate vs chemical petroleum). Soluti...

Digital audio makes a great cutting master if the file(s) sound(s) good to begin with and a good DAC is used for the program path. Tape adds odd harmonics. Disk groove tracing distortion adds even harmonics. The combination of odd and even harmonics is sometimes welcome, but it might be too much. I'...