Crossover for active bi-amp mode ML/JBL system

I can't answer your question, but I love your speakers. One of the best.

This is an inexpensive, and VERY transparent, way to actively bi-amp a system(with the right caps/resistors in it's passive high pass filter):(http://www.allegrosound.com/Dahlquist_DQ-LP1.html) (http://www.ebay.com/itm/Vintage-DAHLQUIST-DQ-LP1-ACTIVE-CROSSOVER-Variable-Low-Pass-Filter-DQ-10-TESTED-/300957694032?pt=Speakers_Subwoofers&hash=item461279f850#ht_220wt_1164) (http://app.audiogon.com/listings/equalizers-dahlquist-dq-lp1-crossover-continuously-variable-low-pass-filter-2013-07-23-miscellaneous-34223-englewood-fl) Try to find one with the original owner's manual. It's necessary, for it's included chart that directs you on what value caps and/or resistors to use, based on your amp's input impedence. They can usually be found for just slightly over $300.00.

A lot of thanks! Any ideas please!