Hm9001 has some hard data and some mock it? Ugh.
It appears that you have trouble differentiating between mocking and seeking clarification.
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?
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?
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- 122 posts total
@ryder yes I have the aluminum Nobsounds. I just remeasured, the gap unloaded is ~14mm, the gap with 1 spring and 2.5kg load is ~7mm. Maybe the springs in your Nobsounds are different. |
@hm9001 appreciate the confirmation. Perhaps the springs in my Nobsounds are different, which is certainly weird if that’s the case. Or perhaps there is error in my calculations. My amp weighs 28.4 kg in the spec sheet, and it takes a total of 18 springs to achieve 50% compression (~7mm gap). 28.4kg ÷ 18 = 1.6kg per spring. The gap with 1 spring and 1.6kg load is ~7mm in my system. Ignoring the discrepancies in the compression of the springs, I presume ~50% compression of the springs is the sweet spot. Perhaps not for all systems as some have settled with 1-2mm gap (>90% compression). The type of component may be a factor too ie. DAC or CD players requiring higher spring compression while amps requiring lower compression, an assumption on my part. I’ll be testing the 2nd set of Nobsound on the DAC and another pre/power amps soon to find out myself.
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The Rate I calculated for @hm9000 was right at 20lb/inch of travel for the spring measured. Based on your specs, @ryder I calculate about 12.6lbs per one inch travel for the Rate of Compression. As I understand it, so long as you are in the travel range (not fully compressed) then no matter how large the gap is, the force to move the object further remains the same or constant. I'd guess leave it in the middle but no one seems to have any idea why. Can the 'different audible results' be identified other than 'pre-knowing' how many springs are being used... I'd still love a thought on best Rate of spring to use. I ordered 100 springs .75" long with a 9.3lb/inch compression rate. These will allow a lot more travel of the component (or more soft 'floating'). Of course I do not know whether one wants one's equipment on a very stiff, barely springy bed, or on a highly springy and very flexible bed (assuming stability). This is the question I'd love someone to weigh in on with knowledge of resonances.
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- 122 posts total