Motor Controller ugrade for Raven One Turntable

I find "nothing short of astounding" an astonishing statement. I can't argue with what you and your friends are hearing but I'm curious about the reasons and if the improvement is really so pronounced. Could it have to do with noise, connection to the AC grid etc that is a difference between AC and battery powered equipment? Or is it really just speed accuracy? If it is the latter, then I agree with the "recall and a replacement instead of an upgrade" comment. Something must be wrong with the stock AC-1 motor controller though that never really got noticed in all of the glowing reviews of that table.

Slowhand mentioned in the OP that Jeff at Highwater Sound said that huge gains can be had by replacing the stock motor controller from the Raven 1 with the controller from the AC-1. Slowhand then asked if any Raven 1 owners have tried this. Elinor then shared his experience writing that he replaced the controller from the AC-1 that Jeff spoke so highly about with the battery powered controller from the Black Knight and noticed an astounding improvement. So isn't Elinor implying that their is something not so great about the AC-1 motor controller?

There seems to be a difference of opinion about the effectiveness of the AC-1 motor controller. Or is there just a huge difference as you move up the line?

I apologize for commenting above and not contributing to the OP's question. I only have limited personal experience with the AC motor controller. I have heard it under show conditions at RMAF 2010 and have heard the Raven controller on my friend's table, but I have not compared the two to each other.

I find the subject of motor controllers quite interesting. So rather than highjacking this thread any further, I have started a separate thread on the general subject in the Analog Forum.

Again, I'm sorry if my comments offended anyone.