DSP room equalization works very well for the lowest frequencies, as with subwoofers and in larger rooms. It will also work quite well a little above this, say up to the Schroeder frequency (somewhere between 100-200 Hz, depending on room size). Above that, there really is no point. This is also why room eq is less successful in small rooms: the room modes are too high to be equalized succesfully. The optimum listening position will be very small, and sound can become dull and lifeless. But to equalize a pair of subs, or just the bottom end of large main speakers, it works a treat. I am very pleased with my Antimode 8033.