Minus k Technology BM-8 Isolation Platform


Just wondering if anyone out there is using one of these to isolate their turntable. It is a passive design using what the company calls negative stiffness isolators.  Very clever design. You really have to see a picture of the isolator    https://www.minusk.com/products/bm8-vibration-isolation-platforms-bench-tops-isolators.html
It looks to me given the specification that you could isolate any turntable with one of these as well if not better than SME, Basis and SOTA  do with their designs. It is not much to look at and at $3000 it is not exactly cheap but it would be a miracle for someone with foot fall and feed back problems. I personally think equipment racks are unattractive and will not have one in my living room. My equipment is hidden in an antique armoire. I'm thinking about replacing my old suspended turntable with a new one and this platform would give me a lot more flexibility and choice.  Just wondering if they really work👩‍🦳
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looscannon

Showing 1 response by indranilsen

Hello,
I have some experience in building, DIY, isolation platform using a pair of 1 inch thick maple plywood and springs. I selected the springs with lowest possible spring rate for a given load such that the natural/resonance frequency of the unit dips down to 5hz or below. I encountered three  issues with the platforms 
1. Levelling components having asymmetrical load distribution. In order to get the maximum isolation benefit I needed to equally distribute the load to each spring such that each carries a load very close to its max load bearing capacity. With asymmetrical load distribution this was very difficult and I can see this as a key issue with MK, Vibraplane, Townshend or any such isolation platform.
2. The combination of steel and wood platform was adding some colour to the sound output that I didn't like. I hope the platforms used in these commercially manufacturered products is very neutral.
3. Cables specially thick aftermarket cables attached to the components degrade performance by adding more than required damping and compromising the freedom of movement of the platform.
Did you guys face any of the above issues with your platforms?