Hi Russ,
Yes, they are slightly angled backwards, I guess 20 degrees or so, but the reason being done so intentionally was to keep the sound away from the microphones as the distance between the speakers is so small. I guess in effect it will also spread the sound more like suggested.
I have no other option but to put the double 18" bass bins right in the centre and in front of us. I walked around in all directions and to my amazement the sound is rather good from various angles. We are limited in to what we can fit inside such a small trailer.
More of what we do can be seen
hereAll the best my good friend,
Henni