Townshend Springs under Speakers

"Great, great post, @prof"
Agree! @prof's commentary is consistently well thought out and interesting.
Charles

I just ordered 16 pods today 4a’s 4b’8c’s  for my Streamer/dac, tube linestage and mono amps. I love the Podiums so if I can get 50% of that improvement I will be ecstatic
45 day trial figure I have nothing to lose. Currently use Combak Harmonix footers and Stillpoints under the amps so will see how it goes. 

benzman, will be interested to hear your thoughts on adding the pods to your other equipment. 
I'm continuing to enjoy what the podiums have brought to my setup - the layering and greater depth perspective along with the greater image palpability and uncovering of more recorded inner detail. 
I'm noticing that differences in recordings/tracks are more stark - i.e. the differences between recording techniques and indeed the quality of the production is more obvious. 
The upshot is that it makes listening to music more compelling - hearing further into recordings and getting closer to the artist.
IME these types of changes always seem to follow genuine improvements.

mitch2

I am saying: It’s an idea, opposed to rigid, worth trying:

but let’s stop and think: it ain’t exact (weight range 36-228 lbs) even if you buy very expensive products ($1,200.). I would want to prove the concept first, then refine if I feel a need to.

And, in my case, toe-in gets actively changed, so a slip surface could be glued to the bottom.

here’s 4 x 4 isolation pads from Cambridge, 8 for $26.00

https://www.amazon.com/Cambridge-Vibration-Rubber-Dampens-Vibrations/dp/B08NXZFGWT/ref=sr_1_73?dchil...

like cork? 8 for $25.

https://www.amazon.com/Pack-Anti-Vibration-Rubber-isolation/dp/B01IU6WT5O/ref=pd_bxgy_img_1/130-8897...

I use 2x2 pads similar to the Cambridge under my TT’s feet, just enough isolation to lessen footsteps from my springy wood floor while walking away, It was hit or miss which material/thickness would work, I just got lucky first try. Meanwhile the heavy plinth above them provides stability.
...............................

Thanks for the suggestion, however the owens corning fiberglass boards (considered rigid as it doesn’t roll up), is soft, they are made for sound absorption, not vibration attenuation. No way could that fiber support over 100lbs. I designed corporate office space for 46 years, worked with acoustic consultants, specified special absorption and transmission materials for walls, ceilings, isolation for fitness center’s raised floors, (jumping up and down on heavy equipment, dropping barbells in offices with other tenant’s space directly below is a challenge).

OC703 is acoustic panel. Great for DIY acoustic panel. But for under turntables, other components, and speakers? Nope. Nobsound are a far better choice.