Maggies with a subwoofer system - optimization?


I need advice on how best to improve the midrange and base on my Magnapans (1.6qrs)My idea is to relieve the panels of base duty ( only feed the signal above 100 to 150 hertz to the panels and let my Swarm subs take the low end signal). I assume my midrange will improve, and the solid base performance via the sub system will fill in well. I now run a Krell S550i integrated into the Maggies, and the Krell Pre output into the DaytonAudio SA1000 Subwoofer amp.

Any feedback is appreciated - will I lengthen the life of my panels? Am I wasting my time? 

Tom8999
tom8999
OP

My 1.6's are going on 20 years old now and still going. No sign of delamination. And I listen at very loud levels. From my reading over at the Planar Asylum it seems room atmosphere is the biggest variable in panel life. Salt water (as in close to the ocean) and direct sunlight have been pointed out as two that will shorten panel life (cause delams').

Good luck with Dukes swarm. I've read a lot of good things about the setup.
@don_c55    But surely the Townshend Pods will improve the base as well as the bass.    Sorry, couldn’t resist. 
@avitacom

I have installed biamp hookups on my 1.7i's as the bass panel is run full range on them with direct wiring to the positive and negative terminals.

But none of the other things you mentioned. Feeding the midrange/tweeter combo, I have heard people call it a 2.5 way speaker, separately helps, but well above the range the OP describes.