The Secret Society of Lathe Trolls

And what about D-class power amps? To quote Bruno Putzeys: "The important question is: what are the advantages to using class D? *It's efficient *It's compact Those are the *only* defining characteristics which cannot be emulated or obtained more easily using non-switching power stages. In all othe...

Your biggest problem is always going to be excessive HF content, distortion, sibilance, etc. Get a few good de-essers, just about any current mastering EQ and you'll be on your way.

You would need a preview head stack. Not a simple mod and not easy to find.

More common now is a digital delay line from a standard deck but then it's no longer an analog audio path to the cutting head.

It would have a number of TT and cartridge options. Some clients complain about the sound of their test pressings, only to find out they are listening on a Crosley or similar garbage. Let them hear a wide variety of playback options. I would also invest in a few tools to set up their tables so they ...

I recently had to clean and lube the bearings and took this picture of the bottom of the Neumann suspension box. The coil is on the left. It's basically a speaker motor with a shaft connected. The shaft attaches to the bottom of the head mount on the right. The head mounts on the right side of this ...

I'd call that a runout gauge.

And blank labels?

Fair Use should allow a personal copy from one's own collection. In the US anyway.

I read this on the internet... <http://www.recordcollectorsguild.org/index.php?name=Sections&req=viewarticle&artid=27&page=1>

I don't have a number but it doesn't take much. Not enough to prevent lifting. Just enough to prevent slipping.

Send them to a trusted broker if they need that much hand-holding.

Are the programmers there?

Pitch 13 looks like a great option.

Progress! If you have a good caliper you can "calibrate" your microscope - at lest to a certain degree. It takes some maneuvering but if you set the caliper to exactly 0.002" and position it in exactly the same orientation as the groove then you'll know how wide an unmodulated groove should be. You'...

If 18g sounds better then it probably is better but since I have no experience with this system I'll defer to Souri or others who know how to set it up. So many moving targets with vinyl... The first image still looks too narrow but I don't have a reference. The second image is a little confusing. I...

Upswing - I mean when the stylus is oscillating up and down. That's where the stereo content lives. Too much LF stereo content will cause the stylus to lift up and off the record causing the groove to disappear. Bad! Your groove looks like it's almost there. Let us know how the narrowest part of the...

Can you measure the width of the groove in both places? It looks like the groove is almost gone on the upswing. If it's less than 2mil at the narrowest part then you need to tweak your system or the source audio. Run some tests on inverse polarity LF and see what your system can handle. The Neumann ...

Looks like the vertical LF is overwhelming the system and creating very shallow grooves. Could be too much LF stereo content. Could be your depth system needs to be calibrated. Could be both.

45 rpm is better in any case for a common audio track, see the attached picture with my analysis of 4:30 long audio - 1) ending at 64% for 33 rpm and 2) ending at 100% for 45 rpm - it still has better parameters on any part of the audio for both the cutting (angles) and playback (angles + radii) Ca...

There's very little flow in the system so hose length between the chip jar and the vacuum doesn't matter very much. I have about 15' of 2" flexible duct running to my machine room. I don't see any reason that couldn't be 100' as long as the system is well sealed.

It's a solution looking for a problem. Cutting the groove isn't the limiting factor.

OK, now I want one!

Not likely to cut playable grooves though.