I am no sound specialist, but I suggest trying any combination that is possible.
I, too, have an unusual listening situation and found my speaker placement to be 'unconventional', but it works.
The structural beam may be a problem, but I would start by listening. You can always add sound dampening/reflecting material later.
FWIW, the second position seems like it might work better. But, you should try it both ways.
You never know until you try...
BTW, I wish I had your speakers ;), the amp ain't bad either...
Bob
I, too, have an unusual listening situation and found my speaker placement to be 'unconventional', but it works.
The structural beam may be a problem, but I would start by listening. You can always add sound dampening/reflecting material later.
FWIW, the second position seems like it might work better. But, you should try it both ways.
You never know until you try...
BTW, I wish I had your speakers ;), the amp ain't bad either...
Bob