the cone area will increase 29% per driver or 58% per speaker pair. all else being equal the larger drivers will be capable of more impactful and deeper bass. this is a significant plus.
however a larger cone will lower the frequency at which the speaker starts beaming, or become directional.
this will drive compromises in the design to maintain driver to driver coherence and dispersion, usually a lower crossover frequency and a more expensive, capable tweeter.
the best sounding most coherent speakers i have heard use smaller woofers, e.g. a ls3/ 5a type monitor that can sound spooky good.
however a larger cone will lower the frequency at which the speaker starts beaming, or become directional.
this will drive compromises in the design to maintain driver to driver coherence and dispersion, usually a lower crossover frequency and a more expensive, capable tweeter.
the best sounding most coherent speakers i have heard use smaller woofers, e.g. a ls3/ 5a type monitor that can sound spooky good.