Digital room correction, any recommendations?

I corresponded with the DEQX people, and I'm impressed with the attention they gave to my questions. They even researched my speakers, to determine whether the active crossover feature might be of benefit. I was surprised to learn that the external active crossover feature can be implemented without bypassing the internal passive crossover- they can be made to work together in the interest of reducing driver distortion. Also, their unit has digital ins and outs, so it meets Acousticfrontier's criteria listed earlier in this thread.

I realize this is a really old thread, but Psag's post above using an active crossover to pass through a passive crossover would take away the advantages of going active in the first place?

I've had the DEQX in my system now for several years. We decided not to implement the active crossover feature, which would have required opening the speaker and disconnecting the passive crossover.