Isolation Advice Needed

Barry Diament, who did a number of pretty famous remasters, suggested a bicycle tire in an enclosure (if you want to get fancy); there are commercial variations on this, including obsolete stock from Townshend. You float the turntable on air. 

I have a problem in that the automatic -re-up (Vibraplane connected to an air compressor) might change the balance of the turntable. That is peculiar to my system, given the Airline arm (which needs to be aimed "downslope" to do its "thang"). :) Feel me? :)

I’ll tell you my experience, which may not be relevant. We moved from NY to Texas a while ago, and went from an old house (1780’s core, brought up to modern standards) to an 1880’s pier and beam in Austin. I had a structural engineer here for other reasons, and wanted him to look at the TT situation. Second floor- this house is restored to period by preservationists and well done, not on a budget. He said the walls would move-- my TT is like 245 lbs with plinth. Otherwise a wall shelf would have been my first move.

I had to buy a Minus K, an otherwise unnecessary expenditure, to isolate the TT from footfalls. Works like a charm, but tres cher. So I guess questions might include: are you on the ground floor w/ your system; you can always add a concrete pier or other support for floor under TT if you are; your table is light enough (at least compared to mine) to do a wall shelf, if the walls won’t move with the floor. Congrats on the move.

Don’t go crazy if you don’t have to. We had a house in Westchester, NY that was made entirely of concrete. Floor, ceilings, etc. Circa 1911. I think concrete has improved since then. But I didn’t even bother to do a serious system in that house; I was "on the road" for some years, traveling between Scandinavia and the US, Florida and West Coast. Great years for me, professionally, but I took a dive on two channel in favor of home theatre back I the ’90s and early oughts. Now I’m back!

The big Minus K, which is what I have, will stop ’em dead. I’m not shilling. Believe me. The Minus K folks could only provide me with support up to a degree. When I wanted to do two tone arms-- implicating two thirty pound pods for support-- they weren’t interested in doing the math. I talked to a friend at CMU and a few other people, including a famous reviewer and an engineer at Penn State who was doing gob’tment work. I concluded that the Minus K was not suitable for a load that did not have a center of mass. But, I’m happy to be corrected. Right now, it’s cool, with only one arm; others may have different results, depending on situs.

@retiredfarmer _hey farmer- I did something similar- two sheets of marine ply, with glue and a barn mat. Still didn't fix footfall issues in an 1880 house in downtown Austin. I respect farmers, rednecks and all people driving pick-up trucks for work. :)