Springs under turntable

Yes, Solid Tech gives more freedom of movement in the radial and horizontal planes than the NobSound on their own. You can combine NobSound with Ingress cup and ball supported on a suitable platform ( slate in my case but may be system dependant, worth experimenting with different materials) for better performance. Solid Tech, Townshend Pods, Geoff Kaits springs or kids tyre inner tube under inflated all good options to try under the platform. The Ingress cup and roller balls give you a very high degree of radial and horizontal freedom but couple in the vertical plane thus needing a spring of some kind for vertical isolation. I get extremely good results with this relatively inexpensive set up. If you can afford to spend more then take a look at Stacore Platforms. For a complete ready made solution at a reasonable cost it’s hard to beat the Townshend platforms particularly for turntables or where you use very stiff and/or heavy cables which can influence the performance of the Ingress cup and ball isolators.

Note, that if using cup and ball isolators like Ingress, it is most important to set them up in a perfect equilateral triangle on plan for best results. In some cases you may need to support the cables with sky hooks for example in order that they don’t interfere with movement.

Indranilsen, exactly that is why you have to hang the mass from the springs vs placing the mass on the springs. This is what the Feet of Silence do and why they work so well. You ordered them just right for the lowest resonance Frequency and because of their design they are inherently stable. Great product. You can throw those Nobsound springs away. Bad design.
Rix, I build my own subs and have been through just about every permutation you can think of. Your opposing drivers (force cancelation) is a great way to go. But, as I said before it does not matter if you subs are spiked to the house or suspended. You can not keep the bass from getting to the house. Put on a 30 Hz test tone and walk around your house. Stuff in rooms on the far end of your house will be rattling. There is no way you can stop it all. IMHO spiking them to the floor is the best solution. Springing them will create a resonance peak unless you get the spring rate very high in which case you are doing nothing. You can not isolate your house from bass. 

You can throw those Nobsound springs away. Bad design

Bad design for subs? They work great on my very heavy turntable. The thread is about springs under tuntables. Not subs! So in that context, the Nobsound springs work well.

I would have to agree that I am pretty impressed with how well they seem to have worked under my 401.
And the large SQ change that was easily audible with just a simple spring configuration change.
Hard to complain at $33........
So many thanks indeed to Noromance for bringing this thread to the forum.

Same here. Good one. Thanks!