Direct drive vs belt vs rim vs idler arm

Have just pulled apart an old Goldmund motor I have lying around.
I am impressed all over again with its speed sensing design.

It has 164 slotts and 176 magnetic poles ( north plus south) in the speed sensor assembly, per revolution.

This gives 14,432 counts if they only consider, say, north pluses and 28,864 if they use both north and south. My memory was a little out. Apologies

Didn't Goldmund use the JVC/Victor motors?

Richardkrebs -
Is this the Papst or JVC motor ? Can you explain how the speed sensor works in the Goldmund Studio.

Halcro
Yes it is a JVC motor. After I sold my Goldmund, I had plans to build a TT based around this motor. It was an easy purchase from JVC in Japan, at the time. The project was shelved after further research on motors.

So, Richard, are you inferring that the GP Monaco claims for the speed of their speed correction system are not so earth-shattering or envelope-pushing as one was led to believe, given what Goldmund did two decades earlier?

The Reference was always an awesome device in my book, but the Studio, which I actually got to listen to, underwhelmed me.