Springs for homemade isolation stand

Darren a simple & proven solution is bubble wrap. Get the pink / red colored antistatic type (for longevity) place a sheet flat between the entire slab and your rack top. The sealed bubbles act as isolating springs & can hold the weight because you're using an entire sheet

I might try the bubble wrap. I am using Stillpoints under my turntable. The sound improved w. deeper bass & improved clarity. I just feel that a good isolation stand improves a system substantially. I don't want to spend hence the idea of using springs. If any of you have seen the Machina Dynamica or the Minus K they use springs to isolate. Sounded interesting if I could make my own. I agree about the dissimilar material idea & even the car tube. The bubble wrap sounds interesting in a cost perspective. I will pick some up & post my results once I get it done. My turntable w. the base from the Sound Anchor stand is over 200 lbs at least. Now to find some friends to help lift it.

Koni racing shocks are the answer.

I had Koni's on my car when I was a kid. They were great new but after a bit of use they softened up and were a little mushy. I always thought I should have changed my springs as well.

Take a look at the Minus K stands. They only use springs. It is amazing how effective they are based on the video.

"Take a look at the Minus K stands. They use only springs."

Well, almost. They use combination of springs and "flexures" (beams under compression) - a technically complex isolation technique called "negative stiffness."

Once upon a time, around 8 years ago, Newport Corp. sold the Sub-Hertz Platform - also a negative stiffness isolator with Resonant Frequency circa 0.5 Hz.

Cheers,
GK at Machina Dynamica, Vibration Isolation and other stuff