Honestly, bass drivers should be 8” or bigger in my opinion. 10” or 12” is even better. Thats why you should just augment the low end with a sub but many 2 way speakers today with 6” drivers produce sufficient bass.
If you sit there though and go up a line of speakers, the drivers get bigger and the sound fuller. I’ve found that no 5” drivers can cope with the abuse I want to throw at them. It’s got to be at least 6” if not 7”. I learned this early on in the Paradigm line. The difference between dynamics between studio 10’s and studio 20’s was pretty substantial. The bigger driver on the 20’s vs the 60’s would even play louder.
So yes, with regards to bass drivers, bigger is better!
If you sit there though and go up a line of speakers, the drivers get bigger and the sound fuller. I’ve found that no 5” drivers can cope with the abuse I want to throw at them. It’s got to be at least 6” if not 7”. I learned this early on in the Paradigm line. The difference between dynamics between studio 10’s and studio 20’s was pretty substantial. The bigger driver on the 20’s vs the 60’s would even play louder.
So yes, with regards to bass drivers, bigger is better!