The mass loading material is 1.5mm thick, including the foil layer.Pierre wrote: What's the thickness of that mass loading material you have there? I'm asking cause you mentioned many laying multiple sheets of it on the case...
Yes with a black foam top it will look great and uniform...and it will of course be more efficient...
Yes, we are talking about the same thing..the reason I mentioned the other products, without being explanative is to account for two different approaches to mass loading...
- The acoustipack product has the heavier tar sheet in the middle of its 3 layer sound insulating material among the two foam layers...this adds weight while at the same time supposedly allowing better absorption of vibrations, by preventing the heavier, harder materials, e.g. the cases side panel surface and the tar sheet, from "interacting", so that the small movements of the tar sheet caused by vibrations are not transmitted to the outter metal surface...i.e. the foam layer between the panel and the tar sheet acts like a "buffer" of some sort, while the whole package still adds the extra weight needed to prevent vibrations
- The other product approach, most common to other sound insulation packages, is exactly to have the heavier materials contact each to produce a better "binding" effect, thus reducing the vibrations more effectively...it may also be regarded safer to have the heavier materials "glued" together to support the weight of the added material instead of having the tar sheet further away from the contacing surface and laying on the foam base...don't know if this actually stands, i.e. that it could peel off easier...at least it sounds more logical for the side panels or the top of the case, instead of the bottom, where this would make no difference
It's better to have that in areas where you won't be adding foam on top...I've also used it to fashion custom "Moduvents"...
the downside is that if the surface is not absolutely flat it won't stick properly, and there also is less margin for error when cutting pieces to apply to the case...
Interesting info there... I think I'm going with the second approach with the heavier layers against the metal and the lighter foam on top - to my mind having a really light layer inbetween the panels and the mass loading must surely reduce the effectiveness of said mass loading and allow the vibrations in the panels to transmit to other areas more easily.
I've come up with a much better and far more aesthetic solution for the side panels as of today... will post some photos up tomorrow - I think it's rather more fetching than the silver foil It's cheaper to boot and has already almost totally removed the vibrations in the one side I've added it to...