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Hi all -
a question about the correct stuff to use in the construction of these absorbers.
In the UK we have stuff called Rockwool which is made from "volcanic ash" - .i.e. it is neither fibreglass or mineral wool (or is it?). It comes in 60/80 and 100 Kg/m3 densities. Which would be the most appropriate to use for these absorbers?
Thanks
Mike
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