The active 1100s are far more linear than the M100s on the low end. Take a look at how Ian tuned them. That makes them excellent, bass-wise, even for smaller rooms like my 1920 cu. ft. living room. The only problem with the smaller rooms is that they may not totally acoustically disappear.

That freakin' active LFR bass man...it was just so unholy in my living room!!! I'll never forget that and neither will all those who listened to them. On the Model C, Ian will have 12" drivers with improved compensation for room sizes and boundaries.

House of the Rising Sone
Out in the mid or far field
Dedicated mid-woofers are over-rated