Hi Nitram,
Excellent use of the parametric to reduce the worst of the room modes. Most subwoofer users (and many reviewers) have no idea of the huge variation in low frequency response below 100 Hz caused by the room. In a typical 2400 cu. ft rectanglar room, there will be 9 room modes with variations in response of up to 20 dB, even to different seating locations on a couch.
As you've demonstrated, it's possible to significantly reduce some of these resonances and smooth out low frequency response with careful application of parametric EQ.
Regards,
