Thanks all !
I really like the idea of a pair of RB-81ii. I can still get these new here and they are less than half of that of the RC-64ii. My only question is regarding amplification: If I wire the 2x RB-81ii in parallel, my Rotel RMB-1095 would see a 4 ohm load. According to the Rotel specs, this is ok. I assume it would run a bit hotter, but is free-standing - so has ample breathing space. Any other concerns?
And any concerns about running the RB-81ii lying flat? Does this impact dispersion from the horn?