DIY speaker isolation base for a wood floor


A definite sonic improvement in tightening up the bass. 
1. Start with 4 aluminum cones. I used some old Mod Squad Tip Toes.
2. 16x16 slab of granite.
3. 1/8 cork.
4. 1/2 inch neoprene rubber.
5. 1/8 cork.
6. Top with another 16x16 slab of granite.
7. Enclosed with a wood cradle to hide the mechanism.
  The granite is from scraps from a shop and was cheap. The added 1/4 inch of neoprene to 1/2 inch thickness did help. Let me hear your thoughts.
128x128blueranger
The more you try to store energy the worse things get. It’s a vicious cycle. Sorborhane, as fate would have it, is one of the worse materials ever foisted on naive and gullible audiophiles, right up there with SONEX and lead. It seems like such a good material - not too hard, not too soft. That’s why spring based systems and extremely hard cones like NASA grade ceramics of Golden Sound cones rule the night. They don’t store energy.
Spring based systems don't store energy .... Ooooookay.


The more you try to store energy the worse things get. It’s a vicious cycle. That’s why spring based systems rule the night. They don’t store energy.


What makes Sorbothane the best energy-absorption material are its combination of shock absorption, vibration isolation, and vibration damping properties with its strong, long-term performance in nearly any environment or for any application.

If one was purely trying to isolate than springs make sense but that is based on the assumption that is the best path forward always. It is not. 
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  1. Does Sorbathane convert motion into heat? ... yes
  2. Is turning motion (vibration) into heat as opposed to sound where cabinet motion is an issue a good thing? ... yes
  3. Do springs store energy? ... well of course yes. The better the spring, the more perfect it’s energy storage.
  4. Is isolation always the path to the best sound? Of course not.

Feel free to address 1 to 4 in a cogent manner.