Listening area is around 20ft x 65ft, sheet steel walls, in a machine room. So loud enough to hear it, but not so loud that in combination with ambient levels I damage my hearing
Currently I'm using pc speakers with retrofitted FRS5X, probably 2 watts amplifier as it uses the USB supply.
So in short, louder than those, and better bass response (although I maintain the FRS are ok fullrange up to a couple of watts, and I like their character. Not high end but "that'll do" in the given space and usage.