Verity Audio's (factory)-listening room is 30 deep by 18 wide and has 11 ceiling.
The Verity Ovation fills that room more than adequate according to Jason Thorpe. (was using a 50w tube amp when he was there)
The ovation is a 25Hz -3db speaker. You can bi-amp it I think also.
When the bass module is facing the rear wall it actually has a higher sensitivity allowing for more loudness out of the speaker.
If one opts for having the woofer facing forwards, you cannot play as loud, but you can put it more close to the wall I reckon.
It is designed to have the woofer primarily facing backwards. I'm sure the Fidelio owner will concur here with these findings.
Also an important note is that the pads on both sides of the aluminum disc between the cabinets needs to compress slightly
before the speaker sounds the best, after putting them together after being moved and such... it will take a little time before that happen, say some hours at most (notwithstanding break in of course...If bought used I mean, give it some hours..)
Imperial