During RMAF 2008 I listened to two great sounding systems in the Hyatt Thunderpass Room. The large system was a tri-amped Acoustic Zen Maestro featuring six Halco amps orchestrated by a DEQX HDP3 speaker/room calibration processor. The second much smaller system was designed specifically for the DEQX processor (Legend Acoustics?) - it sounded much larger than its actual size.
Apparently the DEQX processor is capable of replacing the speaker crossover. It is used as a preamp and active crossover to minimize speaker and room anomalies. This appears to be a very unique and evolving technology that could revolutionize speaker and room interaction.
Since returning home I haven't been able to find much in the way of audio reviews of the DEQX processor. So I'm requesting HiFi+ (I subscribe to the digital version) to write a series of articles/reviews on this technology and the products.