I run my 3.6's full range and use a Final sub with them. The sub extends frequency response in my room down to 20hz. The blend is seamless.
Alan
Alan
Magnepan Bass, Dynamics and Subwoofers
However, if you are a Maggie owner/lover and haven't heard an Apogee ... when you do you may become an Apogee convert. Apogees improve on many of the things that Maggies don't do so well, like dynamics, bass response, synergy between tweeter and woofer panels, etc..