Sonic Barrier damping sheets vs cork


I want to dampen my Jolida J9 phono pre, and was wondering what would be the preferred material.
Sonic Barrier sheets from Parts Express or .125" sheets of cork?

markeetaux

Showing 1 response by williewonka

Unlike Geoffkaits experience with sorbothane - I have used it with great effect to completely deaden all vibrations on my rack and shelving.

HOWEVER - YOU DO have to know what density of sorbothane to use - a rating of 40 or 50 should suffice for most audio uses and softer is not better. See link to fact sheet below

EXPERIMENT with sheet thickness. I use 1/10" thick only - I have also tried 1/8", which was also effective, but offered no benefit over 1/10"
- sheets thicker than 1/8" should be avoided for audio use

I did try a double layer of 1/10 " on my TT feet once but it degraded the sound - made it muddy

FOR SURE - stay away from purpose built  Sobothane feet that look like half of a ball - they are useless for most all audio applications and can degrade performance severely

ALSO - sorbothane from different sources (i.e. some eBay vendors) are not made to the same standards - the first sheets I purchased were great - never left any residue or damaged the surface they were placed on
- but the second sheets seemed to leave a mark/residue on wood based products. Just buy from the US sites, they seem to be the original product

My main uses:
- I place it between the metal rails of my rack and the shelf that rests on them 
- I also use it for the DIY ball-bearing feet that support all of my components - see "My System" for details

NOTE: you do not need to cover the entire surface with it, just a small piece (or several smaller pieces) will be more effective and their position can also make a difference

I also have a small piece on the chassis my Moon Audio phono stage.

It's not perfect, but for some uses it is very good.

Here's all you need to know about Sorbothane
http://www.sorbothane.com/Data/Sites/31/pdfs/product-guides/Sorbothane-SPG.pdf

It's not a panacea - but for "some applications" it is very effective

Regards...