I already built two boxes (squared if looked at from outside when in use) with JBL 2245H, but I have not had the picture developed yet.
I have not really played the "corner horns" yet, made some measurements in my room with RS meter and Stryke's Basszone Test CD's sine signals:
HZ DB
10 78.5
12.5 76
15 73.5
17.5 77
20 77
22 78
25 79.5
28 81
32 83.5
36 85
40 89
45 93
50 88
56 80
63 80
71 78
80 82
89 95
100 89.5
112 86
126 87
142 86
160 84
201 90
254 78
320 67
403 72
507 64
640 72
806 73
1015 67
1280 76
1612 80
2029 75
2560 54
3226 67
4064 51

Those 2245's are absolutely excellent in this arrangement, aren't they?!!

How much space between the walls and the woofer?
I have not put any thing there yet. With each side of the box being 2', the empty space between the woofer cone and the walls may be about 1.5 ~ 2 cube feet.

Please post photos when you have a chance.
I will scan the prints when they are done. They are really not anything special to look at, just some cubes from the listening position.

Those 2245's are absolutely excellent in this arrangement, aren't they?!!
What I did not expect is how low these woofers go. I thought I messed up the numbers below 25HZ and verified several times.

Thanks again for the promotion of corner horn idea on your forum.

Michael