Do we really need anything more than 8" woofer and 1" tweeter for medium size room?


With the right electronics good 8" can go down very low and relatively clean. And if that's not enough, well, two 10" subs would do it. 
Opinions?
inna
Maybe I don't anything over 8", but extremely happy with my 10" paper cone woofers, 5.5" Kevlar midrange and 1" aluminium dome tweeter of Aerial 10T speakers.
Obviously no need of any subwoofer. They go low-enough.
What's a medium sized room? Not having a dedicated midrange driver makes crossover points a bit challenging, often times putting the crossover just where music and our hearing are most sensitive..
My room is roughly 2010 cu ft "they" list is at med here 
3ways can be quite pricey when done well imo .. 
Let's say medium size room is 300sqf with 10ft ceiling. Everything is challenging when you want things to be done right.