This is true, of course, nowadays, with technology and materials that allow modern 'tone sculpting'. With new equipment, much more is possible, but at 'new equipment' prices. To some, it's worth it, to others (I'm one...), bass is bass is bass. I'm 'old school' (being old helps...), so the 'old' fridges give me the sounds I like. No, I don't cart them around anymore (been there, done that...), but I'm not going to invest in smaller speaker sizes just to get the same tone I like. I'm very happy with 15" bass (although I also have a 'Henry 8th' cab, with smaller cones..! It, too, weighs a ton, though..!).