Re: [LAU] monitor specifications

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.
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