Aleks Kolkowski's "The Exponential Horn: in Search of Perfect Sound" or replicating the 27ft long "Denman Horn"

If you'll happen to be in London not later than July 27th, 2014... here and here one more reason to add to the load of cool things to do there.

Here the original Denman's horn... 

... and here the fiberglass replica. 

Painting crew... 

 Outdoor testing, nine months after...