Outboard crossover? Why not?

Nola uses them or did when they were Alon  and so does or did  Tannoy on some speakers. No disadvantage performance-wise in fact most would say the opposite. But it's obviously more expensive and for many people I would guess aesthetically less pleasing.

Those 'many people' could go buy nice furniture that would also happen to play some music. Audiophiles are interested in performance. Outboard crossover would take up more space, this can be a problem for some, just like big monoblocks.

LOL well some of those many people are audiophiles with significant others says a former Alon Lotus SE owner.

Well, those significant others could try and accept their fate and enjoy extra Cartier piece presented in an elegant manner.
But it can be tough, I know.

Hello inna,

The loudspeakers I use, Dali MegaLine III, must employ an active electronic crossover. 

Regards,
Sam