With the open back I find I do not need DSP in my room. My friend discovered the same when he moved away from the Linkwitz approach he found he no longer had the colouration he had to overcome with the DSP
Where it really shines for me is how reasltic drums are and that I still hear the bass notes
It never go as low as a normal sub but for where all that energy is in prog metal and Fusion I am a very happy man
But think for a lot of people using open baffle DSP is essential

