Townshend Springs under Speakers

Hear Yee, EVP Bargain Hunters, Hear Yee:

IF you assume/believe the idea is absolutely correct (or just want to find out), it seems to me:

The ’exact’ density/vibration dissipation, for your ’exact’ speaker’s weight/bottom surface, (perhaps uneven weight distribution on each individual pad), is rocket science. The results choosing from a chart with weight ranges indicating ’average’ will either be ’good enough’ or it won’t, certainly not exact.

My heavy speakers, 3 EVP’s each: Six 4x4 x 1" thick, HD Felt = $1,134. add tax, ship, say $1,200.

https://avroomservice.com/store-evp/

the ’weight’ chart says 3 4x4 HD Felt are good for 36 to 228 lbs. That ain’t rocket science.

https://avroomservice.com/evp-2/#evp-select

Perhaps I will try these 3-1/4" square washing machine feet, 2 x 4 = 8 for $36. add tax, pick up, say $40.,

https://www.homedepot.com/p/Everbilt-Anti-Vibration-Pads-4-Pack-69001HD/301857647?MERCH=REC-_-searchViewed-_-NA-_-301857647-_-N

or, something else that seems worth a try

See if they are ’good enough’. Certainly enough to explore the concept without parting with $1,200.

presumably rubber would stay in place

I could glue some felt on the bottom of the rubber to adjust toe-in as needed for 1 or 2 listeners as I now do using hard plastic dual wheel furniture casters with tight axels (no axel wobble). I also adjust toe-in infrequently to narrow a too-wide stereo image. Front inside corner remains on the mark; front outside corner moves in/out around 3" for 2 listeners (enclosure front is 20" wide)
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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.
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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).