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Quiz about adding dense mass to a vibration isolation application!

There are two steps in this quiz:

1) Hypothetically, you have a DAC that is very solidly built on all sides and weighs 25 lbs.

This DAC currently has three Nobsound vibration isolation devices under it, the springs of which are about 50% compacted and are damped by foam ear plugs inserted inside of them.  The vibration isolation effect with this setup is merely middling according to a cell phone seismograph app.

2) You add a 25 lb granite slab to the top of the DAC with a 1/8-inch rubber mat between it and the DAC, and then add the appropriate number of ear plug foam damped springs to each Nobsound device in order to get all Nobsound device springs back to about 50% compacted.

The question: What do you think is the sonic result of step 2?

128x128gladmo

Showing 4 responses by gladmo

gladmo's avatar
gladmo OP
312 posts
 

@dadork 

Yeah, I'm experimenting with the Nobsound spring devices too, and I agree they should include springs which are a little less stiff.  So far my results have been that they are pretty effective with four of them placed under my two heaviest components, as well as on top of my Auralex subwoofer isolation platform (under the sub).

But under my four other lighter components, the results aren't as good and I'm looking for other solutions.  Hopefully Townshend will ship out my first set of 4 Seismic Pods soon. I may end up combining two Pods with one foam damped Nobsound under two components.

gladmo's avatar
gladmo OP
312 posts
 

Interesting stuff guys.  @tonywinga ​​​​: What method are you using to measure the resonance in Hz on your components?

gladmo's avatar
gladmo OP
312 posts
 

The result of being profoundly enamored with one's own thoughts and allegiant to a familiar paradigm is that the underlying pridefulness blocks one from seeing the obvious.

gladmo's avatar
gladmo OP
312 posts
 

Awesome.  I wanted to ask for some advice on cheap cable risers but I just hadn't gotten around to it yet.  Thanks guys.  I've got some work to do...

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