Low freq. from small drivers? Is it possible

Eldartford, what you describe is virtually impossible, whereas I recognize that you can get deep bass from relatively small cones.

This question in analogous to asking whether it's possible to produce high horsepower from a small displacement piston engine. The answer is yes, but it's much easier, more efficient and less performance compromised if you produced the same horsepower with a larger displacement engine. Small cones in small cabinets can produce deep bass, but larger cones in larger cabinets can do it more easily. Multiple small cones in a large cabinet is a good combination, but it tends to be more expensive and complicated than an equivalent single large cone. Every design choice presents a set of compromises. None of the choices is inherently better than the others, they simply present a different set of compromises.