Maggies and subwoofer integration

I use a Rolls SX45 crossover.  Preamp out from my Pioneer SX-1250 goes to SX45.  Hi pass from SX-45 back to Power amp in on the Pioneer.  Low pass go to a pair of REL subs.  Speakers are Magnepan 1.7i.  I set the cutoff around 100 Hz.  The Rolls has a 12 dB/octave rolloff.  Only frequencies above ~100 Hz go to Maggies, everything below to the subs.  So in my case, the Maggies are completely relieved of low bass duties.  You would need preamp out/main in, tape loop, or external processor connections to use the Rolls.

@audiokinesis is probably the most expert in this subject. He has successfully integrated subs with planar speakers for many.
While many think you need room EQ for subs, in my experience, just setting the position, low pass filter, and volume properly yields the best results.

That's the route I'll be taking anyway if at all after experiments. No crossovers or added/replaced components at the moment. To begin with, these maggies might be gone soon as the right one is not great,and refurbishment is as expensive as new ones, and I most definitely don't have the patience and time to perform it myself. 

let’s not confuse generalities with specifics:

-- sure sub swarms of 3-4-5 subs work well, but in the op’s 11x13 room it might just be overkill...

-- someone who hasn’t heard maggies with subs well integrated, well they simply haven’t heard this... doesn’t mean it can’t be done... many here, including myself, have done it (myself many times in own and friend's systems)

let’s also not confuse 'something won't work' with 'some folks just aren't able to make something work properly"  -- there is know how, and effort, involved in many aspects of this pursuit -- getting subs to work well with any top flight speaker is but one aspect... maggies are no exception, yes they are fast -- but are top wilsons focals magicos atc’s slow? don’t think so...

@jjss49 wrote: "sure sub swarms of 3-4-5 subs work well, but in the op’s 11x13 room it might just be overkill..."

Multiple subs might very well be impractical in this case because of space constraints, or cost, or for other reasons. But assuming they’re affordable and the individual subs are small enough to be practical, there’s a somewhat counter-intuitive consideration that arguably comes into play:

The smaller the room, the worse the room-induced peak-and-dip pattern in the bass region. And therefore, the smaller the room, the more room for improvement from the greater in-room smoothness of an intelligently-distributed multi-sub system.

Audiophile ingenuity can often find a way where there seems to be none. I have a customer who was in an even smaller room, and the issue was, how to shoehorn four small (but not tiny) subs into his very limited space. Then he read my setup guidelines, wherein I said something like "bonus points if you can elevate one of the subs so that it’s closer to the ceiling than to the floor." He very creatively asked me if more than one sub could be placed up near the ceiling. Yes! So he ended up with three subs atop shelves in his small room, and the fourth one on the floor.

Duke