oreo, you are missing the point.
that 50,000 speaker setup would be maybe 750,000 to 2,000,000 if made an active system. yeah some people would by it but not many. a 1000.00 speaker would cost 20,000.00 to 30,000. I'm not rich but I can afford some 1,000.00 speaker, but I could never afford 20,000. if everybody switched to active, audio would be something reserved for the richest of the rich.
audio is subjective. that said, active kills passive. there's no debate. there's no "my adcom sound better than your bryston amp" argument. the difference is humongous.
instead arguing off of something that going in your head in theory, go get the exact same setup twice, be it high end of low end. run it passively of an amp in one scenario. in the next setup, disconnect the internal crossover. get a pre amp external crossover like a rane or use a good quality car crossover hooked to a dc power supply (in the early mid nineties this was exactly how I change my passive setup to active). get 3-4 amps. run one amp to the tweeters, one to the mids, one for the bass and maybe 1 for your sub.
the difference will be tremendous. the system will be louder by a tenfold (a 30 watt amp and a 60 watt amp in an active setup will clip at the same point as a 175 watt amp in a passive setup). your spaciousness will be greater, there will be more detail. the clarity will be amazing. but here was the tradeoff
that 90's setup took up most of my living room. that nineties setup costs a lot of money. too much money. while I could afford that electric bill in the 90's (when money was plentiful), I can't now. electric went up, I sold most of my amps (adcom 555 II, acurus 200x3, NAD 2200, mtx soundcraftmen, mackie 2600 and a qsc 2400) around 2002-03 because I could no longer afford to pay 300+ a month electric bill that would be 500 a month now with today's pricing. I now run my bi amp capable paradigm 11semk3 in single channel mode off of a RECEIVER. I sold my 4,000.00 tri-mode capale thiels. I have my Vandersteen 1c in the basement running off another receiver. I gave my infinity speakers to my cousin. boy, do I missed the nineties. my system don't sound anywhere as good as it use too.
http://www.vandersteen.com/pages/Pdffiles/Model 1C Manual.pdf