I use it with my Legacy Classics and a Sunfire Theater Grand amp. It really helped out the sound and the detail. Probably the biggest change was on the low end where the difference in sound was huge. I have tried several times to go back, but can't make myself do it after hearing the biampped version. I would highly recommend it.
You can use an active crossover without removing the passive crossover. If you get an active crossover like Bryston offers where you can set the cutoff point for the upper and lower points separately, you keep most of the unwanted signal from reaching the amplifier, whcih is the approach I would use rather than making mods to the speakers which reduce their value and marketability.
You can use an active crossover without removing the passive crossover. If you get an active crossover like Bryston offers where you can set the cutoff point for the upper and lower points separately, you keep most of the unwanted signal from reaching the amplifier, whcih is the approach I would use rather than making mods to the speakers which reduce their value and marketability.