Discuss The Viv Lab Rigid Arm

@intactaudio , it is always safe to assume the math is always right especially when it comes to human hearing. Just because some obviously defective designs sound OK to some people does not make them any less defective. It is an interesting but extremely complicated and hard to fathom, not tonearm design but the psychology behind human hearing. I think it is analogous to the Rorschach test. Show 10 people an ink blot and you will get ten usually different impressions of what the ink blot looks like. The same is true of sound. It depends on that person's experience, preferences and state of mind.  

Math without an attachment to a subjective listening experience is only worth the computer screen it is displayed on.  Your Rorschach reference is a perfect one for this situation and you seem to be the therapist explaining to the patent what they should be seeing based on some measured metric.

dave

Mijostyn, When you straightened the headshell, did you also change P2S, so the Schroeder was converted to underhang the spindle? By 15 to 20mm, so you get the single null point about where Dave recommends?

Actually most people who look at a Rohrschach will say it’s either a vase or two people nose to nose. This is true for all ink blots. 

Ahh like the old Vace-Fase illusion you get a 50-50 shot at getting correct.  I did a google image search and got about 3 images into an online test and it was funny how you would look at the image and then tick a checkbox from a list of possibilities on the next page.  Ya gotta like the power of suggestion to make you see / hear things.

dave