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
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.
Im 13.5'x16'x10'. 
4 gik traps two low on corners of sprks wall 4' from spkr long wall two high behind my sofa one 24x42 in each reflection wall  1 12x42 above my large curtain window behind me.. Money well spent . Took My low-end to another level . All spkrs and sub on audiopoints