Motor Controller ugrade for Raven One Turntable

Changing caps in a phono stage is not the same as changing caps in a motor controller. In the phono stage, the signal actually goes through it. In the motor controller, all you are doing is controlling the speed of the motor. so either you are turning at 33.33 or you are not. So why would the stock controller not turn the platter at the correct speed on a table as expensive as a Raven One? and different enough to be huge?

Since a motor controller upgrade can only affect the stability of the speed of the turntable, how bad can the original speed be for there to be a huge improvement in the sound. I mean, seriously, I have been hearing this a lot lately, and I have thought about an improved power supply or motor controller for my tables, but it just doesnt make sense that the original power supply that comes with a high end turnable is so poor that it can be hugely improved upon. so someone please explain what I am missing.

It can't. And no one yet has explained why it should in anything close to the laws of physics. And if the motor is so bad that a new power cord is necessary to make it listenable, there is much more wrong with the system.

So the question still arises, how bad can the stock motor controller be that a replacement is "nothing short of astounding". And shame on TW if the stock controller is that bad on a table costing that much. since the only thing a motor is supposed to do is turn at a consistent speed, an astounding improvement is only possible if the stock motor controller didnt do that.

I am not arguing that maintaining a constant speed of the platter will not result in improved sound. I am arguing that any decent turntable of that expense should come stock with a motor and controller that does that basic function.

I am not questioning the quality of a TW turntable and they are probably a fine product. What I am questioning is the reason for an "astounding" difference in sound by just changing a motor controller, whose sole purpose is to make sure the motor turns at a certain speed. I am questioning how much off speed the stock motor must be if the change is "astounding" and if that is true, can I get the same "astounding" change with my turntables by changing the motor controller.
As far as I understand, nothing else was changed to get this "astounding" result.

Much of that assumes a constant motor speed, which is a big assumption. But if you have a constant motor speed, what is it that different motor controllers or belt material or anything else is doing to affect the sound. By definition, a change is either adding something or removing something. So, what is the motor controller doing, other than maintaining constant speed, that is adding or subtracting from the sound that comes out. Same with the different belt materials.
Of course, you can go around and around in your head looking for explanations. but assuming the changes are real, they should be able to be defined and then reproduced. Maybe we cant do that yet with test equipment, but that doesnt prevent us from trying to understand what is happening, and thats what I'm trying to do, for my own understanding. And maybe, if I figure out some of the parts, my little brain can figure out the big picture.
Maybe the motor controller takes out little micro vibrations and thats why it sounds better. Maybe a different belt material does the same thing. I have to guess that it has something to do with vibration, because thats what the stylus picks up. Of course, there are issues of time domain and such, but that is just a shifting of when the vibration occurs in relation to others.
Again, assuming the squiggles in the vinyl groove are passing by the stylus at a constant, accurate rate of speed, the sound should remain the same regardless of other factors unless somehow other vibrations are being added or subtracted from what the stylus reads. then of course, we have what happens after the stylus sends out its signal.

I guess I will still never get an answer as to why this upgrade to a motor controller had such a profound effect. And that is my only reason for commenting on this thread. To find out why so I can extrapolate to other systems. But alas, it was not to be.

I can't imagine why someone would hate a particular manufacturer of turntables. The Raven seems reasonably well built, with accepted design choices. I'm not sure that you could ever perfectly calibrate 3 motors to run at exactly the same speed with exactly the same torque, but I believe that heavy platters and inertia more than cover up any speed issues when used with a belt drive. So while I have perhaps criticized the motor controller theory in this thread, it was not meant to be a criticism of Raven or any other manufacturer. I just dont get how a motor controller can have such a great effect on sound with a heavy plattered turntable using a reasonable quality motor.