Vintage DD turntables. Are we living dangerously?

Lew, Right you are, different pages. I was talking alignment. Interesting thing about that Viv arm. They say you can mount it almost anywhere. No drilling, it's a surface mount.

What about replacing resistors? They are said to age also. Do them on an individual basis?
Regards,

Re-posting the diagram by the RS tonearm designer if it heps:

RS-A1 tonearm set up

Good luck!

.

Fleib, RS-A1 is also surface mount with no fasteners to the TT plinth surface. Thus you can (all too easily) move it back and forth with respect to the spindle, if you want to fiddle with where on the LP surface you will achieve tangency. The saving grace is that alignment need not be at all exact, because the best you can do is to achieve a single point of tangency on the LP surface. Precise positioning only affects WHERE that single point will be located.

Resistors are ageless, except carbon composition ones (cylindrical in shape and brown in color, bearing circumferential colored rings that denote the value in ohms) which can indeed drift over time and due to temperature. I suppose it would not hurt to check carbon resistors to determine whether the value is within ~10% of the schematic value. If so, I would leave them alone. If not, replace.

Hello,

Finally got my TT-101 installed in my solid 40" tall birch plywood plinth with Zeta tonearm and EMT HSD-6 cartridge.
Then stayed until 2:00AM listening with fascination!
This is the best sound I have had in my system by a large margin.
So how does the TT-101 compare to the previously installed TT-71?
Smooth as butter, more refined, darker background, like voices come from outer space, so all the oracle's advantages (micro dynamics, air, pitch black background) + the macro dynamics, impact and the tonality of the TT-71, simply incredible!
Very happy and thankful to you all for your invaluable help in fixing the minor issue.
Off topic: Lewm, noticed OTL amps in your system. Great choice!
I own Joule-Electra LA-100 Mk III and VZN-80 OTL.
Heard other OTL's too (Tenor, McAlister).
OTL's are the most effortless, natural sounding amps out there, in my opinion. Closest thing to a wire with a gain...
Cheers,

Doron

Doron,
I have always been curious about Joule OTLs, maybe because it's the only brand of OTL I've never owned or heard. I started with Futterman amplifiers in the 70s, owned many variants of the Futterman circuit, and now for the past 10-15 years have been using Atma-sphere amplifiers, as you can see. Most of my audio life has been OTL amplifiers driving ESLs. Lately, I've been enthralled by a pair of Beveridge 2SW speakers, driven of course by the built-in Beveridge amplifiers, which are not only OTL but also direct-drive. Amazingly good. The Bevs constitute a "second" system, in my basement. Atma-sphere/Sound Lab system is in my living room.

Well, I may now be the only one here who still does not have a completely reliable TT101. I can make mine work, but I would not say it is reliable, at all. I do have an idea of the problem and how to fix it, but I have too many projects, now including to complete the restoration of a 1959 Alfa Romeo Spider that's 95% done. To add insult to injury vis the TT101, its UA7045 tonearm seems to have a shorted wire somewhere inside. To use the TT101, I will now need to replace the tonearm on the QL10 plinth. Fortunately, the pivot to spindle distance for the UA7045 is close enough to that of the FR64S that I can sub the latter into the QL10. But since I love music more than tinkering, I tend to crank up the old reliable Lenco with Dynavector tonearm/Acutex LPM320 cartridge (muchas gracias, Raul), driving the Beveridge system via a Silvaweld phono stage and Klyne 6LX used as a linestage. The QL10 just sits there.