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I have a buddy who is a very good steel fabricator/welder frame builder and she has said that she will help make me some custom speakers stands. I want custom because I have a height in mind for where they will sit, the design will be basic plate steel either end and a central surport. What I am not sure about is how to best decouple them from the wooden desk which they will sit on (which will also have the turn tables on them). I am think spikes on the base and audio foam on the top plates any ideas.
http://www.thomann.de/gb/auralex_acoustics_mopad.htm
Edit: Sorry misread your OP, not sure if those are useful.
Will they be open frames? Usually a single big column filled with sand to stop ringing is best but thats going to be too heavy for your desk.
Personally I would have high mass stands going to the floor, if you go lightweight on the desk would expanding foam inside the tube/box section help?
Those are the pads I was thinking about, maybe your right on the floor stand idea I am thinking throught the problem at the moment.