Nobody is saying that changing the crossover won't make a difference. If you use components with different values, or a different topology altogether, of course it will sound different.

Do you think that Axiom hasn't experimented with many different crossover designs themselves? Do you think they haven't put these different designs through a series of blind tests to determine which results in the most neutral and natural presentation of sound? Do you think they don't have their own electronics experts with many years of design under their belts?

Your posting of irrelevant links is not helping your case. Also, claiming that Axiom's staff designs and keeps the good crossovers for themselves while foisting substandard crap on us unwitting consumers is laughable.