Eminent Technology ET-2 Tonearm Owners

Hi Chris,

I’m still an owner. Plan to use it again at some point. If this negates me asking questions, well....that’s for you to decide.

You keep referring to the owner’s manual in almost every case except for mine? "Now a smart designer in whatever field, would never discuss how a patented design works.....in an owner’s manual".

#1 Why not?
#2 A patent is public knowledge for those who ask.
#3 Am I still missing something?

The arc block. Emphisis on (arc). Am I still missing something? When adjusted..moves the overhang slightly backwards or forwards. Doesn’t it?

The quote from Steven Carr seems to me at once confirm my post.

Happy new year to everyone.

Ages ago I replaced the entire arm mounting block and with it the VTA arc slider.
At that time I did not have the machining capability to replicate the arc in my design. So I did not copy that feature. I wasn’t too worried about this however because it is useful only if you play records on the same thickness and adjust VTA with them.
Try a little trig..... Set up the arm with the wand parallel to the record surface and the arc at its deepest point. Now raise or lower the manifold using the VTA adjust leaver. As designed the stylus will land at the same place regardless of manifold travel up or down. Brilliant.
Now use say a thicker record. With the same set up as before, the wand is parallel to the record surface at a point where the arc is not at its deepest. This has had the effect of moving the stylus landing point forward in the direction of record rotation. The stylus  landing point now moves backwards and forwards as VTA is changed.
Making the slider straight means that for a given VTA the stylus lands at the same place regardless of record thickness. With an arced slider we land at the same place regardless of VTA but only with the record thickness that the arm was set up for..

Cheers 

@richardkrebs

Doesn’t your post confirm my point? So, all things being equal, with a thicker lp, this results in an overhang error if the exact SRA is maintained. I believe this is what I was saying. It's really just basic logic right?

Am I going mad?

(Anyway, I hope that my continuing to follow this thread hasn't upset more of you.)

I took a U-turn and have been experimenting with two other tts. I felt it necessary in order to develop my own design at some point for my own enjoyment.

With all due respect to J C and to you Chris, an adjustment change with the arc block DOES result in a "shift" that J C refers to, even with the ET.

I've seen it, measured it. This IS what resulted in my "neutral zone" method.

The least intrusive form of adjustment, rather it it be up or down, from a reference lp.