Wool Felt Footers?


I am curious whether any of you have tried using thick wool felt as footers, or as a vibration damping layer under equipment.  I view the material as performing a similar function as the Owens Corning 703/704 material that AV Room Services, Ltd. uses in their Equipment Vibration Protectors, or EVP footers (link).

According to AI:

"Yes, wool felt is an effective vibration damping material due to its unique structure and properties. It absorbs vibrations, reduces noise, and is suitable for various applications, including automotive and industrial uses. 

Wool felt’s porous structure and the way its fibers interlock allow it to absorb and dissipate vibration energy, converting it into heat.  The same properties that make it a good vibration damper also make it a good sound insulator. It can effectively reduce noise transmission..."

What I have tried so far is placing a one-inch thick layer of dense wool felt completely beneath the platforms that are supporting a heavy Aries Cerat Helene DAC (90+ lbs. including the brass damping discs on the top) .  The one-inch thick felt is attached to and positioned directly beneath a Zoethecus Z-slab (constrained layer platform), which supports a Black Diamond Racing shelf (carbon fiber) on which the Helene DAC sits.  Right now the footers supporting the DAC are platinum silicone hemispheres but I may try other options, including footers made from the one-inch thick felt.

mitch2

I was able to source one-inch thick wool felt on Amazon for a reasonable cost.  I used 3M tape to attach it to the bottom of the Zoethecus Z-slab. I like what I am hearing.  BTW, after my purchase, I believe the Vicuña at the highest reaches of the Andes mountains have now been shorn.  Lucky for them, summer is coming.

@hjdca - Yes, the ability to slide the 90’ish pound DAC out of the rack when necessary is appreciated!

@pindac - If I were to cut the felt into 3x3 squares to use as footers, a thin layer of cork adheared to the top might work great.  I would leave the felt alone on the bottom for the reason discussed above.

@gdaddy1 - I have tried those and found they do indeed work well.  Years ago, I used a small bike tire inner tube as an air spring - also effective but obnoxious to keep the right amount of air pressure.  

I have been using 1” diameter felt furniture slides/protectors between my speakers and Sound Anchor stands for the last few years. I prefer them to the Sorbothane dots that came with the stands. I have tried several other materials but the cheap felt discs perform best.