Even a system that is defined as having a "wide" sweet spot will still sound it’s very best in only one location. You can’t change physics.Physics is more large than you think....
We can have 2 ideal listening spots in some room geometry....With the appropriate acoustical embeddings controls... I know i have it....
But the wideness of each spot is limited for sure and precisely located....
To create it we must use not only passive material treatment methods but also Helmholtz more refine pressurized engines called Helmholtz bottles to make the room activated and no more only a set of passive reflecting absorbing walls....I use bottles but more tubes and more pipes....This greatly help to vindicate the constraint of my room geometry in the bass domain and in the imaging domain EVEN in nearfield...
When people say that nearfield help to liberate us from the acoustical constraint of the small room it is not true at all in my experience...
Acoustic is more complex than what customers buying bass traps think about....