LP12- Power Supply- Need education


I have read a lot about different options to upgrade the analogue power supply.
A phono stage need to amplify micro signal would require very good power supply to ensure there is minimal noise interfere with the signal.
I read about Lingo and other power supply articles, however they never mentioned about the science behind it.
How could a power supply powering a motor will introduce noise to the cartridge especially belt drive?
How do you measure the noise when playing a record?
Or would  the power supply provide a more stable rotational speed, my speed measurement on the turntable shows very consistence rpm once it is playing?
I really do not understand why a Lingo power supply cost so much but cannot provide an improvement with a measurable results.
Could someone educate me.
msnpassion

Showing 2 responses by saburo

None of the power supplies mentioned here, including any of the Linn options or the VPI PSs, incorporate a feedback mechanism whereby instantaneous changes in platter speed can be sensed and corrected.
You’re incorrect, both the Linn Lingo 4 and Radikal use sensors in a closed loop with a speed control which monitors platter position once per revolution. The Lingo 4 accomplishes this with an AC motor and the Radikal a DC motor. I have direct experience with both and they are at the very least equal to the Phoenix Roadrunner/Eagle (I owned and used both Phoenix products on VPI and Basis turntables.).
There is, as usual, a ton of misinformation and pure ’BS’ being foisted by those who really have absolutely no clue about the sound of a well set up Linn LP12.
I love this from mijostyn...’listen to a Linn platter, you will be able to pick up radio stations’..ridiculous!

The Dunning Kruger effect is alive and well on this thread and A’gon in general. I pity the OP that was looking for info on the LP12 and then watch his thread devolve into a discourse on why Linn’s are a POS. unbelievable.