Fidelity Research FR-64 vs. FR-54

Dear @lewm : Not really, in a high mass tonearms the cartridge changes of direction can’t do it in the same way than a low/medium mass. Effective mass is the inertia that goes inside and very dificult to " stop " that high inerteia against low inertia.

That’s what happen at cartridge stylus tip level and are induced higher distortions. Ridicolous or not, like it or not.

@lewm , What is totally ridiculous an anacronism is that in 2017 you still are sticked with that tube 30's alternative. THIS IS WAY RIDICULOUS   ! ! ! !  

Regards and enjoy the MUSIC not distortions,
R.

Wish it was practical to get rid of the transistors in both of my systems. The first transistor, by the way, was invented in 1947.  The idea for the active devices you cherish is 70 years old. On the other hand, tubes go way back before the 1930s, even longer ago than what you wrote above.  Probably the vacuum tube is more like 100 years old. The triode is inherently more linear than any transistor.  This is not a matter of opinion. The age of the technology has nothing to do with it.

Do you really think that your system with 3 or 4 (not sure which) passive crossovers in the signal path is ever going to be optimal?  What's better, no capacitor in the signal path or several very excellent capacitors (and resistors and inductors, required in order to achieve those steep slopes)? For me, the answer is "no capacitor".  It's no wonder to me that you require a solid state amplifier to drive the complex and energy dissipating reactance of the crossover(s) you place between the amplifier and the speakers.  What does the impedance curve look like? It must be a nightmare of low values, 2 ohms? 4 ohms?  The question of what amplifier is optimal should never be decided out of context with the speaker to be mated with it, and you've created a monster that needs a high power solid state amplifier, to be sure.  If you like it, that's fine. The whole world is wrong, and you are the only one who sees the light. Congratulations. 

@thekong : DYNAMIC EFFECTIVE MASS   /   effective inertial mass of the arm / cart combination.

The cartridge is loaded with that dynamic effective inertial mass where as higher the tonearm effective mass as more " problems " happens at stylus tip micro levels that induce distortions higher that with lower effective inertial mass.

If high mass tonearms been the " ideal " then " infinite efective inertial mass " will be the name of the game.

Anyway, the point is there.

Rgerads and enjoy the music,
R.

Raul, instead of babbling on the same old things, probably better if you could finish your ideal tonearm and show the world you are right!

It is 2017 already you know? How many years have past since you told members here the arm would be ready "NEXT YEAR"?

BTW, have you tested how bad the air-borne feedback problem really is in your room as mentioned before?

To Dover,

   Sorry to borrow the space for contacting Dover. I've read the post regarding the regulating of the PAPST DC motor for the SOTA table and wondering what your suggestion would be to improve the table speed. Please kindly advise. Thanks for your kind attention.

Will
Star with 64fx