Nothing could beat mechanical equalization...
No electronic equalization will ever change the room response... They change only a part of the speakers response..
Electronical equalization is a removable tool not an indispensable one, mechanical equalization is a permanent essential devices grid in a dedicated room...
I will not repeat here all i could say about that..
Anyway no mechanical equalization is doable in a living room...Then this will not interest most people...
I just post this to say that mechanical equalization of a room exist...