Rockport Avior II's in 19x24.5 room?

I am very pleased with my Audiovector speakers

 But my room is smaller than yours.

BASS SYSTEM

8+6,5” Isobaric Bass System

On my Audiovector R6 Arreté  ; a 4.5  speaker.( midrange on the rear for ´´presence ´´

The R 8 Arreté has the same  

BASS SYSTEM

8+6,5” Isobaric Bass System

But a lot more expensive than the R6 Arreté

I live in an appartment .....so nothing too crazy on the DB  side .

I am not a subwoofer expert .

I have read that the purpose of using 1 ( or 2 )  subs is not to have more bass.

The idea is to have better low frequencies . The subs , pull back a burdon on the speaker’s  woofers  and maybe on the amplifiers .

So a better over all ,  audio perception .

https://youtu.be/F7Bj9JanCag?si=NE4odXsJXLnnoEwg

https://youtu.be/KdrmlXGm2qs?si=2eP8zTSIDYpDIUzz

@mckinneymike 

I also used an acoustician. He designed my room and  while my Avior ii speakers were being built I built my room. Who did you go with? My acoustician was Jeff hedback at hdacoustics. 

I love subwoofers all types cuz it's all about the base😃

@ronboco  I have a friend that is in a firm here in the North Texas area that does primarily large corporate projects.  He is giving me his inputs on diffusion/absorbtion/placement, but I want to finalize my speaker selection before I do a final design with measured performance.  

  I have exchanged a few emails with Jeff and know of his reputation among forum members here and in other forums.  I still might engage him once I take possession of my dream speaker.  I am having some scatter plates CNC’d to use on my DIY acoustic panels.  My interior designer (wife) selected the coordinating color/fabric for the Guilford fabric I am using.

  You obviously did a complete from scratch design and that is quite impressive to say the least.  I should have requested input before I started this build, but I think I can live with the bones of this room as it is built much more solidly than a typical room structure.