Yes Chris. That's what I mean.

I find that for best results I turn the volume on the NXT panels up until they're just not contributing tonally to the sound. At that point (generally about 3-5dB down on the main speakers depending on room, listening position, etc.) I find that the layered sound gives a more realistic image and quality to the sound.

My forthcoming new speaker will be the first to include 'layered sound' as a part of the package (an option) but it's easy to experiment with the concept using your existing speakers, a relatively inexpensive pair of NXT panels and an extra amp. For prototyping I used the little Fane MicroPro panels (you don't need NXT sound below 200Hz for 'layered sound') and a solid state integrated amp that I had lying around. The Seventh Veil NXT speakers will be somewhat better and will also function as supertweeters. For production models I'm going with a class T amp.

I'm happy to answer any other questions you may have to the best of my ability.