Here's some 50 duro 1" feet. I don't know what you're using.
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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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). |
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. |
Whoa! As far as I can tell the Mag Lev thread doesn’t actualy talk about magnetic levitation, just a lot of extraneous stuff. Oh, well. Obviously Mag Lev has been around like forever for turntables. Exhibit A - Verdier turntable. The Relaxa, which was mildly effective, was the name of the Mag Lev stand they couldn’t come up with in that thread. |
My listening room floor is suspended above a crawl space, so it's pretty bouncy. I haven't tried stomping around while a record is in play because I'm honestly afraid to learn what might happen. Hence my foray into sorbothane isolation, which I did not mention previously because I was preoccupied with the potential sonic implications. |
Infection - Not sure anybody's actually ever employed a "Mag Lev" solution. Found an online forum discussion on the subject and curiously some contributors recommended sorbothane feet http://forum.polkaudio.com/discussion/139293/part-1-maglev-tt-stand-part-2-vibration-isolation-devic.... |
I agree with geoff, and I don't like how squishy it is, also Sorbothane leaves residue and a stain that is hard to remove from surfaces. I have found Herbie's products far more effective and easy to work with. http://herbiesaudiolab.net/index.htm |