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

I have 7 inch 2 way towers that dig down plenty deep below 30 hz. However It’s in the volume that where they will never match a 10 inch woofer or multiple woofer system. Big woofer  doesn’t equal deep,  Big woofer equals loud + deep....but that’s just using my math.

We never did discuss Transmission Line enclosures either, or dual woofer scenarios.

Dual woofer's aren't quite as good as more diameter inches, but they don't hurt. :)

Eric i beg to differ ... I have adagios two 6.5 underhung transmission line . They share different frequency i have had probly 40 pairs if spkrs in 30+ yrs . There killer and go to 30 hz ribbon tweeters 2way 

@oleschool

Not sure what you are differing to. ;)

I was making two different statements.  One, noting that we didn't really discuss transmission lines yet as another way to get more out of smaller drivers.

All things being equal, 2 drivers does not double the bass though. :)

Best,

Erik

     What i was getting at is i believe two smaller drivers are more accurate then one massive 12"  imo. I believe my spkrs produce great bass ,placement is big but better then some 10" ive had .. Moving massive air no .But transmission designs works well  my ole dcm time frame 2000ripped they were small multi driver transmission lines too . Jmho if low end is lacking  40hz down let the sub do that hard and specific work 
respect..