Turntable isolation platforms

brotw71
Ok, had to look that up. Mass on spring looks effective for isolating turntables through other means. I’m more interested speaker and component vibration solutions that drain sources of vibration to the floor. Haven’t seen many spring solutions for those. I think springs just solve the floor moving up and down problem rather than lateral.

>>>>As I already pointed out, mass on spring iso system operate in both directions, up 🔝and down ⬇️ That’s why you have such devices as inverted pendulums, etc. That’s why everybody and his brother says go watch the Townshend YouTube video on speaker isolation. A video is worth a thousand words. The mass on spring system is used for all (rpt all) isolation applications, including tube and solid state electronics, turntables, speakers, etc. By the way, even cement slabs move up and down, 

I am using a Symposium Iso Segue under my Classic III and can't recommend it highly enough. My floor is suspended over a large crawl space and the Iso Segue really cleaned up the lower end.

@todd30312  

What is supporting the Segue?

Why do you need one? Do you really need one? 
I needed one as my TT was on a simple table that flexed. I had (20mm thick) piece of granite made, plonked it on the table and my TT onto it. Was good enough for me.

All great thoughts on this universal challenge we often have in our listening rooms.  I am on wood floors and conventional foundations so when my 20lb dog would walk through the house I could feel each step in my listening position.....crazy!  I moved to a wall shelf but now have the same issue polkalover mentions.  When I lower the arm, sometimes I get an immediate bass tone from the speakers.  I didn't think of applying downward pressure, but instead applied slight upward pressure like I was going to pick up my turntable but didn't actually lift off the shelf.  It immediately stops the rumble/tone.  There hasn't been much comment here on the Delos or any of their Orea feet.  These are somewhat reasonable in price.  I am looking at either 3 of the Bronze feet or the Delos 1.75in thick platform.  This is $150 vs $400.  I will call tomorrow and see how these feet of the platform compare to the Orea.  This isn't explained in the technical details, but I would imagine it is the same design.  I may order both and simply keep my preference.  The farther I go with improving my system the more weaknesses are revealed.  It is so much fun and challenging....god I love this hobby!!!