I don't know if this has been posted yet, but I found a review of the Neumann KH 750 DSP + KH 310 A on soundandrecording.de. Looks really good to me, but I just understand the frequency response curves.
Direct link: https://www.soundandrecording.de/equipment/neumann-kh-750-dsp-subwoofer-mit-dsp-system/
Translated: https://translate.google.com/transl.../neumann-kh-750-dsp-subwoofer-mit-dsp-system/
Direct link: https://www.soundandrecording.de/equipment/neumann-kh-750-dsp-subwoofer-mit-dsp-system/
Translated: https://translate.google.com/transl.../neumann-kh-750-dsp-subwoofer-mit-dsp-system/