I will add something to the comments Chris made..... Having spent considerable time with both Jubilees and Khorns, there are important differences between the systems that directly influence placement choices. By design, the Khorn has a fairly pronounced on-axis output in the upper midrange. This is easily heard on K-400 horns with a crossover at 6000 Hz like the AA. This characteristic, coupled with the natural 45 degree toe-in of these speakers when placed in corners gives the optimum playback geometry when placed on the longer wall in many rooms because the listener experiences less lateral shift in the playback image over a range of listener locations in the room. The use of the long wall puts the listener more nearly on axis for most listening positions.
For the Jubilees, the radiation is very even in both the horizontal and vertical planes. The result is a speaker which is more suited to experimentation for optimizing the imaging and depth of sound field. I have found that I prefer less toe-in than the Khorns, usually about 30 degrees, depending on the depth of the room, and set inbound slightly from the side walls to reduce early reflections arising from a shallower toe-in.
I did an experiment with placing the Jubilees about 10 feet apart, no toe in, 8 feet from back and side walls, in a room that is about 25 feet wide and 65 feet deep with a 13 foot ceiling and good acoustics. The playback of most anything I listened to was so good it was spooky, even at distances of 50 feet. Despite the loss of the lowest octave of bass by being out of the corners, the sound seemed totally real, not reproduced from speakers.
Feel free to experiment, you will find that they are different animals, allowing more latitude in placement than Khorns for all the reasons stated. Have fun and learn from your experiences!