Natural Sound

[DasguteOhr]

Don’t these have brushes? I think they run straight off 24V DC. A BLDC needs to have some kind of commutation, like a sine wave, to work. Also, while some of these are slotless, they still have Iron in the stator and therefore aome torque ripple.

All these AC synchronous motors will have plenty of torque ripple that can only be smoothed by a belt but not eliminated.

The only motors with inherently almost no torque ripple are pancake coreless motors that are either brush or brushless. All the great Japanese (and German Dual) motors were of this type. Brinkmann now uses the same…even for their Nalance belt drive.

yes, they are brushless DC motors. below is a 256 line disc with grid size of 0.4mm. the encoder communicates with the control unit and second sensor e.g. at the platter. clock frequency ~65khz. The voltage is selectable 12-60 volt dc I think perfect for battery operation.
yes the dual eds 1000 motor is one of the best direct drives under 0.02%

 

[microstrip]

Yes, you should definitely not have written " no one optimises the controller for the specific motor unit " and i corrected you professor !

Yes, thanks for remembering that I did it long ago, and many members of DIYaudio forums also did it. TechDas zero also optimize it. I was addressing the turntable industry in general, not the exceptional crazy audiophiles. Have you also optimized yours? I can refer to it in the next post!

 

[DasguteOhr]

many find this really good precise sinus 50hz.

LDA Quartz Turntable Power Supply MKII

The LDA Quartz Regenerator will allow you to get the best sound possible from your turntable. It’s that simple. The unit is supplied with a mains power lead to suit your country (UK-EU-AUS-USA) and a cable from the power supply to your chosen turntable. Available to suit voltage in any country...

www.longdogaudio.com

a user's measurement result

 

[Lagonda]

Yes, thanks for remembering that I did it long ago, and many members of DIYaudio forums also did it. TechDas zero also optimize it. I was addressing the turntable industry in general, not the exceptional crazy audiophiles. Have you also optimized yours? I can refer to it in the next post!

No, plain old controller running with capacitor is good enough for me, i am using the one from Davids budget turntable, the AS 2000

 

[Kingrex]

@Solypsa
Can something like this be attached to my TT motor?

LDA Quartz Turntable Power Supply MKII

The LDA Quartz Regenerator will allow you to get the best sound possible from your turntable. It’s that simple. The unit is supplied with a mains power lead to suit your country (UK-EU-AUS-USA) and a cable from the power supply to your chosen turntable. Available to suit voltage in any country...

www.longdogaudio.com

 

[morricab]

many find this really good precise sinus 50hz.

LDA Quartz Turntable Power Supply MKII

The LDA Quartz Regenerator will allow you to get the best sound possible from your turntable. It’s that simple. The unit is supplied with a mains power lead to suit your country (UK-EU-AUS-USA) and a cable from the power supply to your chosen turntable. Available to suit voltage in any country...

www.longdogaudio.com

a user's measurement resultView attachment 143485

Exclusive P3 was something like 0.001% speed accuracy and 0.003% wow and flutter…truly remarkable. The motor is something the likes of which may never be seen again.

Exclusive/Pioneer P3 Specification Exclusive/Pioneer

I have a P10 motor at home with same design as P3…it’s extraordinary…

 

[PeterA]

Yes, thanks for remembering that I did it long ago, and many members of DIYaudio forums also did it. TechDas zero also optimize it. I was addressing the turntable industry in general, not the exceptional crazy audiophiles. Have you also optimized yours? I can refer to it in the next post!

Come on Francisco. Milan simply corrected your claim. He pointed out that you made a mistake just like you pointed out that I made a mistake. You should thank him for the additional information and not be so defensive and dismissive. These are not the exceptionally crazy audio files. We are on a forum that discusses, learns about, and celebrates the best in the industry. You are embarking on a turntable project and trying to gather information. Personally, I am grateful there are people like Bill and manufacturers like TechDAS and designers like David Karmeli, who are pushing the envelope and trying to improve a very mature technology. Those who are interested in this approach, surely benefit. You may want to check out the new SOTA turntable as you continue your research.

 

[microstrip]

Come on Francisco. Milan simply corrected your claim. He pointed out that you made a mistake just like you pointed out that I made a mistake. You should thank him for the additional information and not be so defensive and dismissive. These are not the exceptionally crazy audio files. We are on a forum that discusses, learns about, and celebrates the best in the industry. You are embarking on a turntable project and trying to gather information. Personally, I am grateful there are people like Bill and manufacturers like TechDAS and designers like David Karmeli, who are pushing the envelope and trying to improve a very mature technology. Those who are interested in this approach, surely benefit. You may want to check out the new SOTA turntable as you continue your research.

Now you mix audiophiles with audio files ... Freudian slip? Are you going to thank me for me for pointing your mistake?