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).
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!
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!
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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. |
That link was just an example. See this: They do have a variety of different sizes and durometer values for sorbothane feet. However, I don't know what is best for a turntable. These look interesting for 1.5" And I can't tell you what the optimum durometer would be for your situation. Maybe the above 50 Duro 1.5" washers with cone spikes underneath? |
Just discovered something important, in case you are really looking at sorbothane. I looked up my order history and found out I got the 50 duro sorbothane feet. They are only 1" domes: https://www.amazon.com/gp/product/B00516DGIG/ref=oh_aui_detailpage_o06_s00?ie=UTF8&psc=1 These really compressed and deformed under my power supply (which is not as heavy as a turntable!!). I figured you'd want to know. Probably best to try to get a 70 duro if you get sorbothane.. I'm sure there are better ways to go. |