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

Inna, I agree that all things being equal, 8" would be much better for bass but my room constraints would just exacerbate those room nodes. I've learned my lesson from having too big a speaker. Again, ask my neighbors. :-)

As to a single driver, I'm with you on this. I used to have a pair of Hornshoppe Horns which satisfied me for quite awhile but that 4" single driver just couldn't plumb the nether regions to my satisfaction. That, and the lack of "meat on the bones."

I just feel that since all speakers are a compromise, one should get one that gets the highs, mids and upper bass as close to perfect as possible within the confines of one's space: just let the room fill in the lower end as best as possible unless you're fortunate enough to have a room large enough to use a good subwoofer.

All the best,
Nonoise

My monitors have a 7" mated to a 1" and I have all the bass I need. It helps that my room is about 10’ X 15’ so I get very usable bass down to the mid 30Hzs. It’s only down 4-6 dbs by then so I can clearly hear and feel it. Just ask my neighbors. :-)

All the best,
Nonoise

Bill, 
You can't really tell from the photos but that taper is on all sides of the  front baffle and it's 2" thick. Rapping my knuckles on it results in basically, pain. 

All the best,
Nonoise

Willand, I like your description of "they are essentially floor standers with bookshelf cabinets". That closely approximates how I feel with my Clearwave Duet 6 monitors.

All the best,
Nonoise