Seriously this is all you need: AT616 Pneumatic Insulator, on 4 of them you can place any equipment from 10 to 60 kg (and level each insulator individually). They are very rare, i've been looking for original manual for a long time and finally i got it, very impressed by the data in the manual. I am a Luxman owbner too (PD-444), Stillpoints can be an option too if you want to replace stock footers.
Would an Isolation TT platform further improve my TT?
My new Luxman PD-171 A TT weighs around 55 lbs. and it sits on a heavy audio stand. The floor is carpeted w/a cement base. Prior to this TT I had a Linn w/was much more sensitive and didn't need an additional stand. I wonder if adding an isolation platform would be beneficial to my current TT. I was looking at Butcher Block Acoustics and MDF W/Lead Core and Sorbothane Feet.
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Re pneumatic isolators, it might be obvious, maybe not, but using three pneumatic isolators, If it can be done with stability, is better than using four. At least theoretically. The reason is because the total spring rate is the spring rate per isolator x the number of isolators. And since resonance frequency Fr of the system is a function of total spring rate (and mass) you will get lower Fr with three isolators, all things being equal. My original Nimbus employed only one (!) pneumatic isolator, which is how I got the Fr down below 1.0 Hz. As opposed to air bladders and bicycle inner tubes, tall and narrow pneumatic isolators have the ideal geometry. |
Just so happens Kuzma are showing a full range of passive and active platforms in Munich now including one model they distribute which is made by TableStable/Herzan https://www.monoandstereo.com/2019/05/kuzma-at-munich-high-end-audio-show-2019.html#more |
Am presently putting together my TT isolation package from Symposium. Interestingly enough the Segue Iso platform on 5 springs sits on a diy butcher block on 5/8" treaded brass rod. I've hesitated anchoring this to the wall even though I have angled straps that can be attached to the concrete wall through the sheetrock and the butcher block getting pretty good stability. Question is does the wobbly triple butcher block actually give me some isolation or should I strap it to the concrete wall? I have had some footfall problems but for the most part things have worked pretty well before the platform. |
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