There is no substitute for cubic inch or in this case surface area

Bigger can be, and in my case is better.  Just scored a pair of Pure Audio Project Trio 15 coaxials at AXPONA25.  Two 15 in woofers per channel.

I haven't been this immersed in the music since I got my Thiel CS3.5's. I also have a pair of Ohm Walsh 4.5000's.  Each of these speakers do some things better than the other and I'd often switch between them.

But the Pure Audio Project Trio 15 coaxials do it all better.

There is no replacement for displacement. 

My listening room is 20'x15' with wooden floors (with an 8x12 carpet) and windows. What I don't want are woofers that are so powerful they rattle my windows and shake my floors, adding bass distortions.

I have a pair of Sonus Faber Olympica Nova 5s with three 7" woofers that go down to 32 Hz. They are perfect for my room. I can feel the vibration on really low sounds and various percussion like tympani, sticks, and snare drums sound accurate. I can also hear placement and depth.

Prior to these I owned a pair of Golden Ear 2+ speakers. They had two 5" by 9" subwoofers and two 8"by 12" planar bass radiators. The bass was not nearly as accurate as my Sonus Fabers. I could turn the bass up and down, but if I turned it up too high my windows rattled and floor shaked. So, accurate with sound waves that are felt by my body is about as much bass as I want.

My main towers are 15” Altec 604C coaxial. 

My sub is the floor firing 15” Velodyne. 

Imho in order to project authority, you need to move a lot of air. 

...And then some.

https://youtu.be/iGa9259pz-I