Floor standing speaker isolation advice needed.

Whatever form of isolation you chose (sorbothane or springs) will need to be compliant/soft enough to get as low as possible (<10Hz).

That will make the speakers very wobbly so will you need to use some form of wedges underneath the speakers or the platform with a minimum clearance of say 1-2mm to prevent accidents.

The benefits of isolating speakers have been well documented. Spikes induce resonance in the baffle hundreds of times greater than that of even soft rubber when the speaker is in use.

The problem with isolation is that it’s cheap to implement and the sonic gains are huge (bass starts to play notes) but apart from a few companies like Townshend or Herbie’s there is little profit in it. Whereas with spikes the opposite is true.

ebm
If you want great improvement get Symposium Super Plus bases with copper spikes.Im using them under my Magico Q3s the improvement in bass definition and detail was staggering.

>>>>Staggering? Are you sure you weren’t drunk? 🤡

It would probably be easier and you'd get better results if you used a Herbies product rather than an unbalanced granite platform.
http://herbiesaudiolab.net/spkrfeet.htm

I use Decoupling Gliders on my hardwood floor. Heavy brass tip-toes on my speakers sit in the decoupler and there is no resonance introduced into the floor or back into the speaker (as far as I can tell).
Or you could try the threaded stud glider. Seems like many are getting good results with Herbies.

So I'm looking at the Big Fat Dots or X-Large Fat Dots on Herbie's site and am thinking skip the granite and spikes and just put 8 of these under the KEFs feet?

Thoughts?

Thanks again everyone!