I don't know any of the three you mentioned,but I suspect they might say they would not restrict themselves with two constants(cabinet and drivers)and one variable(crossovers),that the three are interrelated.
http://www.northcreekmusic.com
has interesting(to me) information about how a designer(George Short) approaches speaker design.
http://www.northcreekmusic.com
has interesting(to me) information about how a designer(George Short) approaches speaker design.