UPGRADE on the Vibrations/resonance embeddings:
I have already something not perfect but good...
"Sandwiches" quartz feet on my desk, on top of it a granite plate, in between sorbothane, another granite plate, a cork plate, ad on top a bamboo plate....
This was vey good because the varieties of materials act together and complement each other in damping...
But it is not perfect, the cost was around 50 dollars for the 2 speakers.... And i was happy...
But when you miss something you are not always aware of which is missing...
I bought 8 chinese aluminium adjustable box with 6 springs in their cells...
I install it on top of my "sandwiches"....
Guess what?
An improved controls and a better clarity all around the frequencies spectrum....An improvement on my "sandwiches" that was immediately audible.... (careful to adjust the compression with the load )
But caution:
I adjust the springs compression, in function to the load to support, with some concrete slabs on top of my speakers (but you can adjust by putting less springs than 6 in each box)...I keep my sandwiches for 2 reasons: the speakers are on my desk and the 21/2 inches of the sandwiches height posit my speakers tweeters at the right height, and keeping more isolation from the desk is not a bad thing at all.....
The adjusting of the compression springs is VERY important to reach a good frequencies equilibrium....around 30 % compression for the eyes....
The price is 40 dollars postal fees included, same cost than my homemade "sandwiches"....Under 1 dollars for each spring calibrated in his own cell....(48 springs in the 2 boxes)
My rule is low cost and maximal audible effect, this product gives me that:
https://www.aliexpress.com/item/1005001302651100.html?spm=a2g0s.9042311.0.0.7f7f4c4dgrVxHm