DIYbanter - View Single Post - How Quiet Can I Get From Boxing a Noisy Shop Vac?

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wrote:

I will use particle board instead of plywood to construct the box. I
am under the impression that dense material is better in term of
keeping the noise down. If this still cannot keep the noise down
enough, I will need to consider getting the expensive and quiet shop
vac from Fein.

Make sure you pad the bottom nice and thick. I don't know about density
as noise abater but I know solid wheels on a solid surface really
increases the vibration.

The better the lining is at sound deadening, and the thicker it is, the
better. The more room you give it to add soundproofing, the better. The
more I think about it, if you baffle the air flow out, and you really
pad those walls, you could probably get the noise down low enough so it
didn't make any more noise than an idling car.

I'd check it every few minutes to see how hot it was getting in there,
though. Best o' luck with that. :-)