Syntax wrote,
"I also listened to Minus-K with the same turntable...good luck with that units. It starts moving even when you move the Tonearm to the first track. Even when someone would pay me for it, I would refuse to use it. They are ok for units with centered weight, but that's it."
The best isolation occurs when the motion is obtained with the greatest ease. It's a blessing and a curse. ;-) However, this might not be advantageous for turntables and even CD players that produce rotational forces. As I recall the Minus K negative stiffness machine used to be the Newport Corp Sub-Hertz Platform of yore and was modified for the audio market. Ooops, there's that name Newport again. I was under the impression that the rotational capability around the vertical axis of the Minus K had been disengaged but I might be mistaken. I also recall that the (Newport) Sub-Hertz Platform would go into its rolling swaying motion of 1/2 Hertz when a penny was placed on the top surface.
"I also listened to Minus-K with the same turntable...good luck with that units. It starts moving even when you move the Tonearm to the first track. Even when someone would pay me for it, I would refuse to use it. They are ok for units with centered weight, but that's it."
The best isolation occurs when the motion is obtained with the greatest ease. It's a blessing and a curse. ;-) However, this might not be advantageous for turntables and even CD players that produce rotational forces. As I recall the Minus K negative stiffness machine used to be the Newport Corp Sub-Hertz Platform of yore and was modified for the audio market. Ooops, there's that name Newport again. I was under the impression that the rotational capability around the vertical axis of the Minus K had been disengaged but I might be mistaken. I also recall that the (Newport) Sub-Hertz Platform would go into its rolling swaying motion of 1/2 Hertz when a penny was placed on the top surface.