Any thoughts on what an M22 might sound like if it had one 6.5" driver like the M3. Would it lose some of its clarity or just achieve some of the low end that it is "missing". I know it's a moot point as most bookshelves get paired with subs, but I was wondering....

Ah, the M45.

M23, really. The M45 would be the tower version.

Yeah...Wouldnt you think that would be the perfect speaker?
Replacing one of the 5 1/4 with a 6 1/2 would be like an M80 cut in half.