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I posted a similar message over in General last week......
Has anyone had luck damping metal shelves used in an audio rack?
I have a Boltz steel AV rack, and while providing good mass and rigidity, the shelves tend to ring when tapped. I'm thinking of trying to apply cork, dynamat, or some other type of damping material to the under side of the shelves. I can also apply some other type of damping or isolation to the top side of the shelves.
Waste of time or a useful project?
Thanks in advance for the tips :)
Follow Ups:
Also consider placing isolation devices on the shelves to isolate the passage of microphonics.
Instead of just damping the underside of the sheet metal shelves, you might consider using the shelves as foundations for simple hardwood plinths to place your gear upon.
I would use something like dynamat. It works great on metal and is easy to do.
Here is a similar product that is MUCH easier to work with and is removable. Not sure you can say that about dynamat.
Afterwards we discovered faith; it's all you need
Have you considered these?
Thanks for the excellent tip. Dynamat has gotten way too expensive for what it is.
I like laminated glass shelves of sufficient thickness.
Thanks, guys! Your suggestions are pretty much along the lines of what I was thinking: adhere some damping material to the undersides of the shelves while using additional platforms between the components and the top sides of the shelves.
Damping the undersides should be a fairlly simple endeavor. Figuring out which material to use as isolation platforms will likely require a bit of experimentation.
The best price I've spotted for a 22" wide x 18" deep x 1.5" thick maple board is $39 (see link below). I would recommend placing six Herbie's Audio Lab grungebuster Dots (1" diameter) under each maple board, then position vibration control footers of your choice under each component placed upon the maple boards. Also, it might not be necessary to dampen the bottom of the steel shelves, since a maple board with grungebuster Dots will dampen them quite well.
Thanks, Duster
This might be the more practical approach, since I'm thinking of adding platforms under each component anyway.
Here's my favorite source for maple chopping blocks and cutting boards.http://stores.ebay.com/Dawns-Depot
I had better buying experiences through her Ebay rather than Audiogon site.
See ya. Dave
Edits: 07/11/12
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