To help further ease your concerns about the FV15HPs in your room size, Audioholics reviewed the subwoofer years ago and rated it Bassaholic Extreme, which means that it is suited to room larger than 5000 cubic feet.

https://www.audioholics.com/subwoofe...ion-111016.pdf

https://www.audioholics.com/loudspea...ofer-room-size