Nobsound springs - load range


I want to try out the Nobsound springs as damping footers (mainly under my mono blocks and my streamer). I ordered a first set of them and now I wonder about the amount of springs to put in for different weights of equipment.I remember one post that said it works best when 50% compressed (was it @millercarbon?).

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).

Any comments?What about ~10 kg streamer, seems to be too light to compress the springs enough? Does anyone have experience with Nobsound springs under light equipment like this?
Based on your experiences: Would you even dare to put an 80kg floor standing speaker on Nobsound springs?
hm9001

I had 4 Machina Dynamica springs under everything prior to buying the Nobs. Well, I started pulling springs out late yesterday with 3 springs/ 3 Nobs under the Oppo first (decent improvement). Today I got busy starting with my LSA Voyager GaN 350 amp (OMG!), then my Audio Alchemy DDP-1 + PS 5 (here I only used 2 each X 3). This leaves my Core Power 1800 PLC, which currently has 4 Machina Dynamica springs.

 

I am totally amazed. I now have authoritative bass- mid bass, which gives the music more drive, putting a big smile on my face. CD is Lyle Lovett The Road to Ensenada. One of my torture test CDs is Jennifer Nettles Playing With Fire. It's on as I write this. Where many of the songs sounded thin, so far it sounds natural, like she's in the room .

 

There are a couple LSA Voyager threads, and a few guys mentioned they found it slight of bass: SURPRISE.

 

So thanks for this thread!!!!  I had them under all my kit, but never thought to experiment and pull springs out.

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Tweak1 has nailed it. All the calculations are a waste of time. Even the bit about being compressed half way is just a guide or starting point. Another guide or starting point, the component should bounce very slowly, around 1 to 3 Hz. Just a guide. Only thing that really counts is the sound. There is no substitute for listening.

Most components have weight unevenly distributed. Springs don't have to be placed symmetrically. Don't have to be 4 per component, 3 might work better. Only one way to find out.

The main reason for all this trial and error tuning is Nobsound are not damped. Because of this they have a resonant frequency that changes with load. The same springs can give an extended top end, or big bottom end, or be tuned for a balanced sound. All just by changing the number of springs. Or adding weight. Mahgister does that, tunes his to within 1/4 pound.

Also the Nobsound design is more vertical isolation, with not much in other planes. That is the tradeoff for having terrific performance for cheap. 

Townshend improves on all this, with damping that improves performance as well as flexibility. Height adjusts by turning the top of the Pod. 

steakster, if you like piano on your system with springs, you should see the video where they put a piano on Pods! 

 

Millercarbon is right...

in my case for eaxample,because of the structure and particular resonance of the box speakers for example, the right amount of load damping must be fine tuned BY EARS, like the springs compressive force applied by the weight load on the springs themselves...

They are in my case then , an optimal weight load of concrete around 80 pounds over my speakers, which must be tuned BY EARS in an optimization process  in relation with the speakers densities and resonant geometry and  also in relation to the precise compressive force which could be optimally applied to damp the resonance of the speakers and not only isolate from the the external vibrations...

This fine tuning is an incremental process of listening experiments distributed on a week....I first fine tuned for  the  optimal load of  concrete for the speaker box without springs...

After that adding the springs under the speakers i ADDED some "light " load playing in an optimization process near around 20gram toward 100 grams...