Stewart Pinkerton wrote:

A slit is certainly an option in my room, although I might have to
write my own modelling program! :-(

Model, why? - ah well, one item of horn modelling software does exist
"out there", I have it somewhere on some harddisk.

Peerless has a 10" sub-bass that looks about right if used in multiples.

If I wanted to feed an elongated opening, then doing it with a line of
units comes to mind.

At the moment, a pair of Adire Tempests looks to be the most likely
solution.

Freehand a manifold, i. e. a conical horn (x), as the adapter between
the unit and the slit. Conical horns are wonderfully simple: the faster
they expand the higher their range. They also have the advantage of low
distortion due to the fast initial expansion. Remember however to also
load the other side of the membrane, at a wild guess and without
checking anything a 5 cubic feet box comes to mind, possibly 7, this to
minimize equal order distortion and to provide some driver protection.

No warranty of any kind, suggested only for those who can freehand the
amount of garlic and curry .....

Stewart Pinkerton | Music is Art - Audio is Engineering

(x) From the unit you make a transition to the slit width, 3" comes to
mind, and then you let the horn expand in one plane only horisontally on
the floor of the loft and then make a 90 degree down turn into the slit.
It is very easy to brace such a flat structure with dividers to ensure
that it is suitably rigid. The slit area should not be smaller than the
cone area, for a "seat of the pants" design guide I'd aim for two to
three times the cone area and use a fairly rapid expansion of the
conical "hornifold".

Kind regards

Peter Larsen

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