Fidelity Research FR-64 vs. FR-54

@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

Dear @lewm : Not a monster that's for sure. The ML amps is a very special amp design with no trouble on handle almost anything with real aplomb.No, I don't have that nigthtmare impedance curve you name it, ADS makes no that kind of " mistakes ".

Yes, the best resistor/cap/inductor or cable is NO resistor/cap/inductor or cable but sometimes as it happens in the 99% of the speakers designs are need it. I think that the passive crossover in my ADS is optimized and does the less harm to the audio signal you, me or any one else could achieve. So, I'm confident on this main issue.

In the other side and when you are talking of " linearity " we have to think that today transistors designed expressely for audio are not the same as in the " old " times and other than that we have to talk here not only on linearity but about frequency bandwindth, signal transfer velocities, intrinsic devices distortions and the like.You are a wise man, so don't try to justify what in 2017 has no single justification other that you already pay for it and have to live with. Remember that like me you are a " by product " of that touted AHEE and this is your problem not mine.

Btw, I'm not the only one that sees the light but a person that sees the light in way better way that some as you can't do it yet.

In other thread you posted that have some bass problems with your main system and you want to solve it adding subs and I know that move/action it helps but as you stated somewhere tubes are not for bass overall management.

I know very well your Sl and heard it with tubes and ss electronics and differences are like nigth and day. Yes, I know you like tubes and you said I'm with ss alternative but the reality is that I like MUSIC not electronics.

Regards and enjoy the music,
R.