Biamping with an active crossover is a better solution.
Low power line level signals in the active crossover are much more easily and elegantly handled, than trying to handle them in a high-power element like in the speaker.
Also, if you run each channel of the amp full range, and then filter the signals at the speakers, some of the advantages of biamping are negated. If you use the active filters, each amp channel is only required to amplify a portion of the signal, and thus has more power and headroom available for each driver. And each driver can be driven directly by the amp(s).
I'd strongly consider using the active biamping arrangement, even though it needs more cables, and does increase the signal path length and complexity, it is a job better done at the line level.
IHMO.
Low power line level signals in the active crossover are much more easily and elegantly handled, than trying to handle them in a high-power element like in the speaker.
Also, if you run each channel of the amp full range, and then filter the signals at the speakers, some of the advantages of biamping are negated. If you use the active filters, each amp channel is only required to amplify a portion of the signal, and thus has more power and headroom available for each driver. And each driver can be driven directly by the amp(s).
I'd strongly consider using the active biamping arrangement, even though it needs more cables, and does increase the signal path length and complexity, it is a job better done at the line level.
IHMO.