Nobsound springs - load range

I don't have the Townshend pods, but I have the podiums under my heavy floorstanding speakers. They use pods on all four sides that are fixed to the podium and that have a knob to adjust the preload on the springs (in a certain range, there are different pod types for coarse load adjustment). With my speakers the Townshend podiums were a huge improvement, by some factor more than with the Nobsound springs under the components.

The Townshend pods are much enhanced, as they are also rather free in the horizontal directions (Nobsound is more or less stiff there), and the Pods are also dampened in a controlled way.

@ryder Thanks for posting your experimentation and results. Very informative to read.

I am a total beginner here. I only use three under components and I pick where they go for stability and ignore the existing feet. I took the feet off all my subs and only use three nobs for them as well.

So far as springs go, since this essentially is a static application as I see it (I doubt I can see electronic vibrations…), as long as the spring is compressed down into the specified ‘travel range’ it doesn’t matter how much or how little compression (or squashing) of the spring happens. The rate remains the same.

But, the Nobsound supplied springs seem to have compression rate of about 20-25lbs/inch which seems far, far too high to me, with far too little travel. Somehow I think I want a ‘pillow’ spring where there is higher travel per pound. But is this erroneous?

QUESTION?    To achieve the best isolation for components or speakers does one seek a very high compression rate, assuming the weight will compress the spring down into the ‘travel range’ of the spring chosen. What is the ideal resonance (although I cannot measure it)?

And to get to that resonance, what makes more sense, lots of low rate springs or one high rate spring?  Both must be utilized in their respective ‘travel’ ranges of of course. I am about ready to buy a slew of 9.3lb springs to have more ‘bounce’ for push downward. Is this a logical thought?  I’d totally appreciate any thoughts from the more science minded out there.  Thanks.    Mark

@hm9001

I measured the compression of the springs, it takes ~2.5 kg per spring to compress it to 50%. Based on 50% compression target, this yields the following sweet spot configurations (only stable ones, total equipment weight):
- 3 units, 3 springs each: 22.5 kg
- 4 units, 3 springs each (or 3 units, 4 springs each): 30 kg - 4 units, 4 springs each: 40 kg
- 3 units, 6 springs each: 45 kg
- 3 units, 7 springs each: 52.5 kg
- 4 units, 6 springs each: 60 kg
- 4 units, 7 springs each: 70 kgLoad can be considerably higher than expected (somewhere I read about 36kg, which is presumably for 4 units).

May I ask if your Nobsounds are the aluminium alloy versions? I found that it takes 1.6 kg per spring to achieve 50% compression. Have you measured the gap between the top and bottom aluminium pieces? Without load (0% compression), the gap is 14mm. With 50% compression, the gap would be 7mm. Are you getting these same numbers?