On Sat, Jan 07, 2012 at 11:32:21PM -0500, Al Thompson wrote: > On 01/07/2012 04:09 PM, Fons Adriaensen wrote: > > > > But some time in the late 70s, together with my prof of audio > > technology at the Brussels broadcasting and media academy, I > > constructed some very large linear horns using glass fibre > > sheets and epoxy resin. One day we were testing outdoors using > > You were making linear versions of the Levi cabinets?? How did they sound? They were not based on any existing cabinet design. Some time before Wireless World (which was a great magazine at that time) had published an article discussing the relative merits of various horn profiles - exponential, catenary, hyperbolic - and this had tickled my curiosity. To build the horns, we first cut the profile in a piece of plywood (hyperbolic IIRC), then used this to make a plaster mould. This in turn was covered with several layers of the glass fiber sheets and epoxy resin - a very messy affair. They sounded very well, and were incredibly efficient. Ciao, -- FA Vor uns liegt ein weites Tal, die Sonne scheint - ein Glitzerstrahl. _______________________________________________ Linux-audio-user mailing list Linux-audio-user@xxxxxxxxxxxxxxxxxxxx http://lists.linuxaudio.org/listinfo/linux-audio-user
