Another option is to find a used Magnepan XO1 crossover. That will allow you to biamp with amps that are not gain matched, and also bipass the caps/inductors for the LF. They go for about $100, though they're pretty rare.
I have one sitting around doing nothing, if I could remember where I saw it last....
I have one sitting around doing nothing, if I could remember where I saw it last....