I built my system around the principles of Edward Choueiri and his BACCH system. It’s the last piece I have to add. As of now I try to find room spaces when I move that are not square which help with avoiding standing waves (Modes /Nodes) and keep the speakers off the walls as much as I can. There is lots of great information here and ways to do this. I have large full range 20.1 Maggie’s which are as close to line source as I could get, four large subwoofers (also asymmetrically placed in the room) and measured the room (speakers and listening position) with Room EQ Wizard and then input that data into Multi Sub Optimizer via an Earthworks M30 microphone to generate filters everything running out of my Mini DSP with balanced connections which is processing all filters at 56bit/ 96kHz. There are no A/D conversions, it’s digital from start to finish. I’ve ripped out the analog crossovers and use the Mini DSP to input directly into the amps which power the speakers actively. As others have alluded it is almost impossible to correct a bad room with room correction alone. You can very effectively do it by adding more subwoofers. . . Most of the shorter wavelengths die fairly quickly on reflections and room treatments work great for those, the worst offenders are the lower order notes that cause all the issues. It’s crazy to listen to the system before the filters are built (scared the daylights out of me) and to also see the filters that are created after all the processing is complete. The results are stunning.
Thanks,
Steve