On Sat, Jan 07, 2012 at 11:32:21PM -0500, Al Thompson wrote:
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.
Vor uns liegt ein weites Tal, die Sonne scheint - ein Glitzerstrahl.
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