I have a set of NX-Otica's and double troubles. I use the plate amps from Danny and are powering the Oticas with a McIntosh MA 12000. I got a chance to audition a MEN 220, a room correction unit built by McIntosh, McIntosh licensed RoomPerfect technology from Danish audio wizard Peter Lyngdorf, whose Steinway Lyngdorf music systems cost upwards of a couple hundred grand. Here is where the plot thickens.
Friends and I dialed in the phase and the levels on the plate amps to sound good with the NX-Oticas, we thought we did a great job. At first, we used the Men220 and the room correction software just controlling the Oticas, but when we re-ran the whole set-up and allowed the Men220 to adjust all the levels, the music went from great to Outstanding.
What we did was allow the Men220 to set all the levels. We turned all the switches on the plate amp to "11" and let the Men220 do it's thing. The overall bass and punch increased dramatically. The unit did a great job of blending the sounds of all of the speakers.
Before I ran the double troubles through the Men200 I was really on the fence whether I actually liked the sound, but once I gave it full control.... all I can say is Wow!