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Old 9th February 2010   #930
PaulP
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Quote:
Originally Posted by SaSi_SiDi View Post
The primacoustic design is based around a 3" thick absorber panel mounted 5" away from the wall for a total thickness of 8" (as far as I understood the explanation and diagram).

The limb mass is suspended in the back of the absorber panel allowed to freely vibrate. That means that it should have a clearance from any surface (either the absorber panel or the back of the cavity) of 1" or so.
In the Primacoustic corner trap the limp mass isn't exactly hung, as in hanging
from a horizontal support at the top, but tied all along both sides to strips of
wood that are screwed to the sides of the enclosure. So it's not just hanging
free. Depending on how tight the fit is, the limp mass will be more or less
taut.

I can't find how the limp mass is attached in the other absorbers but I don't
see why it wouldn't be the same.

Paul P
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