What is under your TT, cheap islolation?

I don't know why people continue to have problems with TT vibration. Mine went almost completely away about thirty years ago when I got an Empire TT which had two features of interest. (1) The platter and the arm moved together on soft springs. (2) The arm was mass-balanced around all axes, with VTF applied by a clock balance wheel spring.
I would expect that more modern and expensive TT would be better than the old Empire.

Now I have a Sony PS-X800 TT which has a linear tracking biotracer (servo'd) arm, and it also shrugs off vibration, and plays even badly warped LPs without any problem.

Have had this experience with my Ariston 11-S, (like an old Linn) after I removed it from the wall. The other folks who responded are correct. It's the Floor. I put the TT on top of the Target turntable shelf,6 vibropods in the middle, and a black flakeboard shelf on the bottom. This vibropod sandwich rests on my stand. Results were good. I like the Granite Idea. Also, I installed 2 lollycolumms under the 40yr old woodfloor which really helped. Walking softly right in front of the stand also helps.

Markd51's comment about replacing the VPI's spring suspension with the Sorbothane pucks is well worth considering. I have a VPI HW-19 Mk4, and had lots of problems with "turntable bounce" due to the suspended flooring in my home. I tried lots of different isolation approaches, but finally found the solution when I installed the Sorbothane pucks. If you decide to install the pucks (and maybe the cones used with the VPI Scout, which I found to be a good addition), you will need to do some minor modification of the turntable's base. Drop me a private note if you'd like more info.

I have decided to build a sand box isolation base. I am starting on it tonight & will let everyone know how it works out.

OK, I am staining tonight & this will be finished. This is what I did. The base is 16" X 21" plus 1" thick sides mounted on the outside of the base.

I cut 3/4 MDF for the base & top. I cut the top 1/2" smaller than the bottom. I used poplar 1 X 4" for the sides & nailed them to the MDF base in addition to using some liquid nails. I used 45 degree miter cut's on the corners to look a little pretty. I filled all the nail holes in with some putty & sanded. I am staining the base & I painted the top cover black. I will coat everything with polly & fill the base with a 50 lb bag of playground sand I purchased from HD. I also purchased some simple & cheap rubber feet for the base but do not know yet if I will install them, I may end up trying some iso nodes instead. All told it cost me about $40.00 for the materials but I already had some scrap 3/4 MDF lying around.

I plan on installing some cheapo adjustable iso points feet that I purchased from parts-express under the turntable & placing on the top MDF cover that I built. I don't have alot of money into this & if nothing else it has proved to be a fun project. I will set everything up this weekend & see how it sounds.