CSPort Turntable speed control

Dear @chauncey : SME always been a sinonimous of truly high quality designs and excecution on those designs. The 60 is the Ultimate TT for any one no mtters what and with the advantage that comes with a new SME tonearm. About its control speed SME uses DSP technology as you can read in its site.

Now, what is the main target in any TT at any price must be: spin accurately at the RPM 33.33/45 and stability on those RPM. You can read in SME site too that the speed error for the 60 is: -0.005% .

That’s is quality that any serious audiophile and MUSIC lover are looking for. All the other TT overall characteristics are in secong place/step that that speed stability.

In other side you can always mate the 60 with an after market vaccum hold dow mechanism.

If you can afford go for it. You can’t go wrong with the SME 60.

R.

I don’t know why @mijostyn on TT’s always recomend Dohmann when he likes in other areas SME.

Btw, the Dohmann is motitoring continuosly each secon its RPM speed to make the changes need it and in this specific regards I think that the SME60 is better. The Dohmann speed error is -0.01 % and in no other measurements is superior to the 60.

@rauliruegas

I've always liked SME and the reason I have an SME arm. But really how in the world do you get .005% accuracy with a rotary knobs?  You could breath hard on the knob and move it more than .005%?

@rauliruegas , The SME 60 is a fine turntable. It has all the feature I deem crucial in a turntable. It's major issue is the price and the fact that you can not get it without the arm. I'm sure the arm is excellent. The Dohmann's claim to fame is it's negative stiffness suspension in both vertical and horizontal directions. I suspect it is superior to the SME's suspension but I have no proof of this. It can mount two tonearms of any size. The SME is limited to one 9" arm. As you are aware we agree that arms longer than 9" are inferior. However, there are arms like the Reed 5A and Schoder LT that require more space even though their arms are actually shorter than 9". 

I read Michael Fremer's review of the 60 and he made one glaring error I would like to correct. Al Conti did not invent the hanging four point suspension. David Fletcher did when he designed the original SOTA Sapphire. David and Al were good friends and was by all accounts honored that Al wanted to use his design for the Debut. The only difference is that the SOTA's suspension is hidden by it's cover.  

Dear @chauncey  : Fro several years SME was the side line of an Aero Space corporation and that test/spec speed is part of that very high technology/engineering legacy.

That SME 60  sspeed test is " formidable " in any BD TT. Numbers like that were reserved for DD vintage TTs as the Technics SP-10MK3. If you really are interested in the 60 you can't go wron with it. This is the Technics speed:   R

Info about background of designer/owner of CSPORT

My name is Machino TOSHIMICHI MACHINO and I am the owner of CSPort. CSPort is a new company that has only been established for 6 years. We are specializing in the high end audio market. All CS Port products have been designed by me. I'm training young engineers to be able to design them in the next few years.

CSPort products are the result of my 3 years of experience in machine tool design, 40 years of designing switching-power supplies and 50 years of hobby audio. My main techniques are in the area of switching power supplies and audio amplifiers, especially noise suppression techniques. The details of the amplifier include not increasing the number of amplification elements, not applying negative feedback, not using chemical capacitors in the amplifier's signal circuitry and power supply, and applying noise suppression.

The TAT2 is characterized by use of a granite base, a stone that has been stabilized for over 5 million years and a 17 kg stainless steel platter to reduce unwanted vibrations by means of weight. The surface of the platter is also mortised and the records are held together by heavy stabilizer.

One of the issues of classic designs is the fact, that the frequency of the motor drive servo enters the audio band. Than this servo noise is picked up by the cartridge. The same is true for synchronous motors because they feature a mechanical servo. It takes some time for the TAT2’s platter to get to a constant rotation, but it is achieved without a servo hence there is less audible noise. TM

Very impressive IMO