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Are You Sorbothane Experienced?

I couldn't find any discussions on user experiences with sorbothane isolation feet, so decided to start one. I recently purchased a set of 4 40mm sorbothane feet for my Music Hall mmf-5 turntable. 
Setup was less than favourably a one-man affair, so it was a rather precarious endeavour.

One thing that adds to the difficulty of what I imagined would be an entirely straightforward installation, is the fact that the sorbothane feet easily distort under the slightest off-centre loading. That means you have to adjust them incessantly  at both top and bottom contact points until you miraculously have all 4 perfectly vertically loaded perpendicular to your turntable's factory feet as well as your shelf. In my case the shelf is by Salamander.

Once you've managed all this and justifiably rather pleased with yourself, guess what? Your turntable may or may not be level as it was prior to the installation. So, level the TT at the shelf rather than at the adjustable feet, as are standard on the MH, because adjusting the feet would upset those super squishy sorbothane isolation pucks. 

The listening verdict: I honestly can't say that I can hear any difference during before & after playback of Jimmy Cliff's Wonderful World, Beautiful People.

I'm curious to learn of your experiences, if any. Cheers!
avdesigns
auxinput
1,538 posts
 

I have used 1/2" sorbothane feet in addition to a layer of dynamat on the bottom of an external preamp power supply.  The power supply was getting resonance interference from vibrations of my studio monitors and causing electrical resonance on certain notes which carried through to the audio.  The sorbothane and dynamat successfully removed this resonance. 

I have also used 1/8" sheet of sorbothane as a vibration damper on a home theater processor.  You may have to use special adhesive because sorbothane won't really stick upside-down.  Using a multi-meter I found that sorbothane does carry an electrical current, so be careful not to apply to any wire or pin contacts.  The backing of dynamat and similar products also carry electrical current.  Dynamat is excellent for applying upside-down and it is designed to operate in a high heat environment.

auxinput
1,538 posts
 
oh, another thing to note is that sorbothane is available in multiple durometers.  A softness of 30A, for example, is so soft that it sticks to the surface and can mis-shape very easily.  Using a higher 40A or 50A will help with deformaties, but it won't absorb as much vibration (still excellent though).
avdesigns OP
29 posts
 
Auxinput - Based on your description I would guess my sorbothane feet are of the 30A variety as they are very sticky & squishy. And they distort quite easily. Properly setup this isn't an issue of course. But my table feels like it's sitting on a gimbal.
Post removed 
auxinput
1,538 posts
 

https://www.amazon.com/Sorbothane-Hemisphere-Non-skid-Adhesive-Durometer/dp/B00516DGIG/ref=sr_1_1?ie=UTF8&qid=1490136234&sr=8-1&keywords=1%22+sorbothane

Here's some 50 duro 1" feet.  I don't know what you're using. 

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