The earlier mentioned Klipsch Heresy + dual JL Audio Fathom F112S sounds like a dynamite combo for a smaller room. I would venture into a different scenario with a pair of OMA Monitor’s and augment them with a pair of DIY limike’s PicoWrecker tapped horn subs. While those tapped horns aren’t small they’re rather slim (though tall), and should be placed in the corners flanking the Monitor’s. The PW's should hold their own against most any commercial subwoofer offering, but tapped horns just sound different (i.e.: better) to my ears compared to direct radiators.
https://www.avsforum.com/forum/155-diy-speakers-subs/1654961-lilmike-s-picowrecker.html
Forget about notions of "overkill" here; it’s an approximation to sufficient headroom, and well-integrated this setup would be a seriously musical, versatile and dynamically uninhibited.
Alternatively, and somewhat cheaper, I'd recommend the JBL 4429 as mains, still in tandem with a pair of PicoWreckers.
https://www.avsforum.com/forum/155-diy-speakers-subs/1654961-lilmike-s-picowrecker.html
Forget about notions of "overkill" here; it’s an approximation to sufficient headroom, and well-integrated this setup would be a seriously musical, versatile and dynamically uninhibited.
Alternatively, and somewhat cheaper, I'd recommend the JBL 4429 as mains, still in tandem with a pair of PicoWreckers.