Why not horns?

The speakers extend along the walls about 22' or so. However, due to the 'home plate' shape the part not touching the walls comes out aout 32 1/2". As I understand it, it is preferable to have a wall extend beyond the actual point of contact. With that said, I have one such wall, but the other is interrupted by a window a foot or two from the 22' extension. In the course of fiddling with my system, I have switched output sides a few times; haven't noticed any difference between the two sides. Just one comment re: the Lascalas. I liked the sound, but the stock Khorns have far superior bass.

i have windpw frames 21-22 inches from each corner. is this a problem if khorn is not perfectly flush against the wall
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basically, the wall (for the k-horns) is part of the bass horn, so not having it flush ends the lenngth of the horn at the point where it is no longer effectively one piece. It is no differentin principle than the horn that loads the midrange, but the wavelengths of the respective frequencies produced are different hence the different lengths of the horns needed to load the respective low ends of the particular band - breaking the one solid piece that forms the bass horn is no different than if you sawed the midrange horn in half and set the two pieces next to each other - the horn loading the midrange driver would not consist of the two halves now but only the half that was continuous from the driver.

The Khorns need to fit snugly into the corners and against the walls on both sides. Their performance will suffer if this is not the case. False corners are used by many, however the height of the windows could be a factor aesthetically - not to mentiuon the WAF...

I've had KHorns for a little over a year. I have them in a dedicated 12' x 13' room, and I think they do well in this size room. Bigger room would certainly be better for them, but smaller speakers have not done better in this room.
Mapman - They extend 22.5" from the corners along the wall, and 27.5" into the room from the corner. 49.5" high. I have a door within 22.5" of a corner, so I put a 2' x 4' MDF board there so the speaker pushes flat against it. You may or may not be able to do this with your window, depends how far the sill or trim extends out (my door trim is .5").
Other things posted above about these speakers (need to be in corners, etc) I agree with except for the possible exception of what JohnK posted ("To me Klipschs are responsible for much of the negatives tossed about by non horn owners."). If this is true maybe it's because it's easier to make them sound bad (wrong amplifier, not properly set in corners, etc.).
I've only heard a few decent horn systems, so I can't really say how well the KHorn represents horns in general. But I will say that for the price (assuming used @ $2K or so) they are very competitive with other speakers. I prefer them to the Logans and maggies I've had in this room, albeit with different electronics. I run my KHorns with a 2A3 SET amp.