Why are the Parsifals supposed to cross over so high? They are pretty full range speakers, afaik. Are you confusing the crossover to the bass modules with the crossover to a real sub?
In general, the crossover to the sub for most processors is much lower. You would also need an additional amp as the sub/lfe output of prepros is line level.
If you are looking to replace the passive crossover in the Parsifals with an electronic one, there are more appropriate units. For example, there's a nice deal on the nht X2 at http://home.comcast.net/~jhidley/ This would give you the frequency you need but you would still need the additional amp.
Frankly, I would leave the Parsifal's as is and add a single competent sub for the bottom end, if you need more grunt.
Kal
In general, the crossover to the sub for most processors is much lower. You would also need an additional amp as the sub/lfe output of prepros is line level.
If you are looking to replace the passive crossover in the Parsifals with an electronic one, there are more appropriate units. For example, there's a nice deal on the nht X2 at http://home.comcast.net/~jhidley/ This would give you the frequency you need but you would still need the additional amp.
Frankly, I would leave the Parsifal's as is and add a single competent sub for the bottom end, if you need more grunt.
Kal