I had two Fathom F112 in a 14x16 room.
It started with one F112 and it was great with a pair of Sonus Faber Guarneri Memento speakers.
Then it progressed into 2xF112 or one for each speaker. The decision was made to implement a Bryston 10B-SUB crossover between the preamp and monoblocks so that neither the amps, nor the speakers would ever see anything below 65Hz.
It was magic.
I've never heard drums fully fleshed out way out beyond the speakers and anchored solidly to the floor as if holographic.
Having said that, go with one F112. Two are a royal pain in the butt to setup properly.... Took me weeks to dial them in.