Why Do 12" Tonearms Cost So Much More Than 9"?

. On the other hand, I am a cheapskate so won't be buying one.

Thanks Lewm!
Gave me a good chuckle there👍😂

Thank you Mijo again.

The CB also looks very interesting especially in the CB-L version.
I also see there is a collaboration between Frank and Peter at Soundsmith to produce an arm called the Alto at $6k although information seems to be a little sketchy on that?

Thanks for all the information on the Schroeder LT arm Mijo.
It looks and sounds like a near endgame proposition.
But.....$15 large?
Unless the right numbers come up on the lottery I doubt I will ever be giving one a test drive unfortunately.

Cleeds.
Just to clarify my thoughts maybe a little better and to follow where I believe Lewm is heading.

Maths would seem to indicate that any INITIAL error in setup on a longer arm would result in a greater playback error.
So a basic change in vta by eye just looking at, say making the tonearm more tail down would result in more change at the stylus the longer the arm is.

But as I have said from practice this just does not seem to occur.

And this maybe because I am missing something ?

What "measured error" are you talking about?

Cleeds.
I gave you an example in my post.
I thought it was obvious my statements were just related to maths and I was not discussing any actual tonearms or tracking errors as related to turntables per se.

Lewm.

I say that it does not seem to be borne out in practice just from my own experience with 9", 10" and 12" tonearms.
I cannot prove it one way or the other and similar to yourself I truly do not care overmuch.....

It's quite interesting on error in relation to arm length.

Simple math states that from a pivot point of A to a fixed point of B that the greater the length between A and B is then the greater the measured error will be at point B from a change at point A.

For example we install positioning lasers about 12 to 18 feet from a target so the laser is point A the target is point B.
At 12 feet for point B if I have an error of say 1/4" this grows to say 3/8" at 18 ft target distance or new point B.

However it really does not seem to be borne out in practice with tonearms.
Most interesting indeed.