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Basic anti vibration? Cones vs pods? Is there "good enough solution"?

New to this part of high end audio. Cones (stability) vs "cushioning" (e.g. pods) Different schools of thought? Do most people use combinations of both? Trying to understand (if possible).

I’ve read recent threads but don’t have the energy to test zillions of combinations. Is there no "this will probably be pretty good?" e.g. I did online research and upgraded to prima luna tube preamp and parasound amp which are good enough for my purposes (at least now).  Also 100 lbs floor standing speakers.

e.g. rack with shelves made of granite "bonded to a 3/4 inch thick anti-resonant substrate"

https://www.audiogon.com/listings/lis9aicf-adona-corporation-av45cs3-3-tier-component-stand-cabinets-racks-stands


Thanks for your time.







berner99

Showing 4 responses by geoffkait

geoffkait's avatar
geoffkait
23,365 posts
 
Is that what skyhooks are for? 😳 Does Herve Villschaise approve of them? Everybody and his brother has been using tension springs and bungee cords like forever. LIGO the project to detect gravity waves uses compression springs but whatever floats your boat as it were. I’m not sure I’d go back to the 70s for my technology. 😬

As for stability it helps a lot if you know what you’re doing. Low profile springs of the correct spring rate are extremely stable under most loads. And much easier to implement. Hanging stuff with springs is very tricky and inconvenient. 

geoff kait
machina dynamica
advanced audio conceits
geoffkait's avatar
geoffkait
23,365 posts
 
You wouldn’t have the problem in the first place if you’d only thought ahead and placed the appropriate size springs under the house during construction. That’s what Shannon Dickson did in Hawaii, you remember him, he was the author of Bad Vibes! - the seminal article on vibration isolation for audio components that appeared in Stereophile magazine in 1996. Think ahead. Maybe you can backfit the springs. Lots of laughs. 🤗

No matter how much you have in the end 🔚 you would have had even more if you had started out with more 🔜
geoffkait's avatar
geoffkait
23,365 posts
 
Quick and dirty analysis of Vibrapods. Too much internal damping. Undamped steel springs would sound much better as they do not permit energy to be stored in the system. It’s the same principle for inner tubes and rubber bladders and rubber fabric air springs. There are other physics principles involved with these isolators, too, such as the ideal geometry — minimum Contact Area + maximum volume.
geoffkait's avatar
geoffkait
23,365 posts
 
Why settle? I have a soft spot for dual-layer heavy masses on springs iso platform of my own design with super hard nasa grade ceramic cones underneath both the component on the top layer and the lower heavy mass, which can be granite or bluestone. Superb sub Hertz performance and very cool looking. Build the whole thing for $200.
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