| fiogf49gjkf0dApologies for DIY flavour, but what, I wonder, do people make of the following technique for damping relatively thin-walled large horns, in pseudocode... 
 For horn length x = at throat to at mouth
 
 Take a length of y mm diameter braided cable sleeving
 Fill with stone aggregate of particle diameter > max sleeving wall gap
 Wrap around horn at x
 
 end
 
 By varying y one can adjust damping at different points along the length of the horn, if that turns out to be beneficial. Another advantage is that because the sand is not bonded one might get better damping than with most other materials.
 
 Any criticisms?
 
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