What your choice speakers with spikes or speakers with a vibration isolation device?

Here’s a link where the inventor goes into several science experiments and explanations of what you gain.

https://youtu.be/OZxi1oZfvDA

Here’s a short video where he talks about transfer of energy through concrete

https://youtu.be/BOPXJDdwtk4

finally here’s a great video that has some newton in it for Miller carbon!

https://youtu.be/dW9-r83IvhI

Mapleshade MegaFeet

Kalali +1....I'm now on a suspended hardwood floor and using Herbie's products under my speakers.

I always decouple, no matter the floor..No spikes ever...I dampen the enclosure, as much I can. If you can get the KNOCH factor to green concrete, you've done a good job...

I go by the pound..about 60 lb a foot for monitors, bass lowriders or bass columns.

I'd hang the darn things if I could figure a way without turning the room into looking like the Big Top at Barnum and Bailey's..

@ 60 lb a foot, that's over a ton hanging from the rafters, with just 4, columns. There are 8 enclosures in there.

Hanging is out, spikes are out. 

Adjustable spring mounts and silicone.
A spring suspension and different viscous ratings for the rubber, from staying liquid (like an accumulator, or a shock), to a VERY hard dry material.
Hospital generators, and power plants in floating structures use them.. Where I got the idea from 40 years ago. ZERO harmonics, as long as the dampeners would stay charged, (no leaks from the bladders) with nitrogen

There is NOT a better way to control harmonics...

Vibration = distortion, simple...

Regards

I suspended my Rogers LS35a speakers from eye 👁 hooks in the ceiling with bungee cords. Was that so wrong?