On Sat, 03 Jan 2004 12:47:29 +0100, Peter Larsen
wrote:

Stewart Pinkerton wrote:

Please explain the difference in geometry between a fairly "open"
conical horn made with three walls and the corner. Surely a difference
in geometry has to exist for the acoustic functionality to differ?

For an obvious start, a room corner is not conical - unless you live
in an oast house.

A room corner has the property of a constant expansion rate. A conical
horn has the property of a constant expansion rate.

A conical horn has a mouth, a room does not. A room corner has three
*reflective* surfaces, a conical horn has none. You are a buffoon.

Crosssection shape
can be freely chosen, aspect ratio's beyond 3:1 are best avoided unless
it is for feeding another horn, bends will attenuate frequencies whose
wavelenght is comparable to or smaller than the bend radius.

Are you completely insane? Do you have *any* idea what you're saying
there? There *are* no bends in a conical horn, and a subwoofer is used
only at frequencies where a wavelength is more than ten feet!
--

Stewart Pinkerton | Music is Art - Audio is Engineering