Wayne, what is the low end on your 7pi bottoms? I'm wondering if these would work as a compliment to the Heresy's with a little xover tweeking. Change the dimensions some to work with the cabinet dims of the Klipsch's (15.5" wide x 13.25" deep). I could then biamp running one to the Heresy's and one to the bottoms. I'm basing this purely on asthetic reasoning as I'm not looking to listen to movies or anything with these so I'm not sure I'd need a "pure" sub. Just a rambling thought.