Bigger drivers = bigger soundstage


Ideally, I don’t like to be aware of a speakers location in a room and like having sound being well centered for tv/movie listening.  I have two listening rooms and the one with larger drivers (older) fills room so much better vs better speakers (newer) with smaller drivers.  Room acoustics favor larger driver speakers.  
Seems dispersion is better.  The larger driver speakers do not image as well but very enjoyable to listen too. 
So now I am upgrading the smaller driver speakers to better and larger driver speakers and it follows a larger speaker cabinet also occurs.

all speakers herein are from same manuf. 
emergingsoul
Small drivers and speakers are good for marketing people:
1. Better WAF
2. Cheaper to built !!!
3. Increase sales of expensive super powerful transistor amplifiers.

IMHO the fashion and huge popularity of low sensitive speakers with small drivers is the one of the biggest delusions in audio.
I don’t talk about really small rooms. For small room small driver speakers are OK.
The larger the cone, the harder it is to achieve the required stiffness while keeping mass reasonable. Your large speaker may be louder and more efficient, but what about cone breakup, whizzering where the outside does not move with the inside, etc.  There is no free lunch, not even with large speakers unless you keep their frequency range low.  This is why several small drivers can provide better overall performance than one large driver, especially if you want a more extended range.
Devaliet Phantoms get bass in the 20hz region at 90db with small drivers, I think they are 4 inch?