Dear Rick,
I play my Genos (volume knob at 3/4) with a pair of HS8 (volume at 1/2), placed on Konig&Meyer stands set at hears height, in my living room, which is 750 square feet large.
They sound PERFECTLY any frequencies, despite technical specifications. Don't need Subwoofer: low frequencies sound perfectly.
By connecting Genos directly to the HS8 (I have a Mackie mixer, but tested that is better without) you get a clear, not manipulated sound.
HS7, that I also tested, are Ok, but weak on low frequencies: the speaker diameter makes a big difference.
When I want/need to play less loud, just adjust Genos volume knob at 1/2, and I still get good sound.
Finally, IMHO HS8 have an excellent quality/price ratio, if compared to many equivalent powered monitors from other brands, that I tested.
Ciao,
Angelo