"Curious....Why do bigger drivers excel at low frequencies as opposed to using the same amount of Vd in multiple smaller drivers?(LTD)
It would appear that in simulations there might be a very small advantage but when listing we tend to like the big drivers better. I know many that have said they love the FTW21's over other 18s for ULF. Then the SI 24 comes out and people are all saying the same thing."
if i had to take guess, it is probably because most folks just hook them up and play some tunes, make a comparison, and draw a conclusion.
the larger drivers have more sensitivity because they couple to air better and lower fs because they tend to have high mms (coil, cone, air load), together that gives them a different frequency response and subjectively 'more bass'. this then leads to comments like 'wow, driver really digs deep'. then by reverse logic, some folks might then look at the specs and conclude that the specs aren't telling the whole story because they aren't correlating to what was heard.
this is the problem that james (mk) was referring to, as he may have at a point long ago found himself in a similar situation.